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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

FORM 10-Q

For the quarterly period ended March 31, 2016

OR

For the transition period from                     to                     

Commission file number 001-35877

HANNON ARMSTRONG SUSTAINABLE INFRASTRUCTURE CAPITAL, INC.

(Exact name of registrant as specified in its charter)

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes  x     No  ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    Yes  x    No  ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer”, “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act.

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).    Yes  ¨    No  x

Indicate the number of shares outstanding of each of the issuer’s classes of common stock as of the latest practicable date: 38,950,289 shares of common stock, par value $0.01 per share, outstanding as of May 6, 2016 (which includes 1,384,663 shares of unvested restricted common stock).

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FORWARD-LOOKING STATEMENTS

We make forward-looking statements in this Quarterly Report on Form 10-Q (“Form 10-Q”) within the meaning of Section 27A of the Securities Act of 1933, as amended (the “Securities Act”), and Section 21E of the Securities Exchange Act of 1934, as amended (the “Exchange Act”) that are subject to risks and uncertainties. For these statements, we claim the protections of the safe harbor for forward-looking statements contained in such Sections. These forward-looking statements include information about possible or assumed future results of our business, financial condition, liquidity, results of operations, plans and objectives. When we use the words “believe,” “expect,” “anticipate,” “estimate,” “plan,” “continue,” “intend,” “should,” “may” or similar expressions, we intend to identify forward-looking statements.

Forward-looking statements are subject to significant risks and uncertainties. Investors are cautioned against placing undue reliance on such statements. Actual results may differ materially from those set forth in the forward-looking statements. Factors that could cause actual results to differ materially from those described in the forward-looking statements are contained in our Annual Report on Form 10-K for the fiscal year ended December 31, 2015 (our “2015 Form 10-K”) that was filed with the U.S. Securities and Exchange Commission (the “SEC”), and include risks discussed in the Management’s Discussion and Analysis of Financial Condition and Results of Operation of this Form 10-Q and in other periodic reports that we file with the SEC. Statements regarding the following subjects, among others, may be forward-looking:

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Forward-looking statements are based on beliefs, assumptions and expectations as of the date of this Form 10-Q. Any forward-looking statement speaks only as of the date on which it is made. New risks and uncertainties arise over time, and it is not possible for us to predict those events or how they may affect us. Except as required by law, we are not obligated to, and do not intend to, update or revise any forward-looking statements after the date of this Form 10-Q, whether as a result of new information, future events or otherwise.

The risks included here are not exhaustive. Other sections of this Form 10-Q or our 2015 Form 10-K may include additional factors that could adversely affect our business and financial performance. Moreover, we operate in a very competitive and rapidly changing environment. New risk factors emerge from time to time and it is not possible for management to predict all such risk factors, nor can it assess the impact of all such risk factors on our business or the extent to which any factor, or combination of factors, may cause actual results to differ materially from those contained in any forward-looking statements. Given these risks and uncertainties, investors should not place undue reliance on forward-looking statements as a prediction of actual results.

The following discussion is a supplement to and should be read in conjunction with our 2015 Form 10-K.

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PART 1 FINANCIAL INFORMATION

Item 1. Financial Statements

HANNON ARMSTRONG SUSTAINABLE INFRASTRUCTURE CAPITAL, INC.

CONDENSED CONSOLIDATED BALANCE SHEETS

AS OF MARCH 31, 2016 and DECEMBER 31, 2015

(DOLLARS IN THOUSANDS, EXCEPT PER SHARE DATA)

(UNAUDITED)

See accompanying notes.

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HANNON ARMSTRONG SUSTAINABLE INFRASTRUCTURE CAPITAL, INC.

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

(DOLLARS IN THOUSANDS, EXCEPT PER SHARE DATA)

(UNAUDITED)

See accompanying notes.

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HANNON ARMSTRONG SUSTAINABLE INFRASTRUCTURE CAPITAL, INC.

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(DOLLARS IN THOUSANDS)

(UNAUDITED)

See accompanying notes.

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HANNON ARMSTRONG SUSTAINABLE INFRASTRUCTURE CAPITAL, INC.

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(DOLLARS IN THOUSANDS)

(UNAUDITED)

See accompanying notes.

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HANNON ARMSTRONG SUSTAINABLE INFRASTRUCTURE CAPITAL, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(UNAUDITED)

March 31, 2016

1. The Company

Hannon Armstrong Sustainable Infrastructure Capital, Inc. (“the Company”) provides debt and equity to the energy efficiency and renewable energy markets. The Company and its subsidiaries are hereafter referred to as “we,” “us,” or “our.” We refer to the financings that we hold on our balance sheet as our “Portfolio.” Our Portfolio may include:

We finance our business through cash on hand, borrowings under our credit facility and debt transactions, and various asset-backed securitization transactions and equity issuances. We also generate fee income through asset-backed securitizations, by providing broker/dealer services and by servicing assets owned by third parties. Some of our subsidiaries are special purpose entities that are formed for specific operations associated with financing sustainable infrastructure receivables for specific long term contracts.

Our common stock is listed on the New York Stock Exchange (“NYSE”) under the symbol “HASI.” We have qualified as a REIT and also intend to operate our business in a manner that will continue to permit us to maintain our exception from registration as an investment company under the Investment Company Act of 1940, as amended. We operate our business through, and serve as the sole general partner of, our operating partnership subsidiary, Hannon Armstrong Sustainable Infrastructure, L.P, (the “Operating Partnership”), which was formed to acquire and directly or indirectly own our assets.

Investments in Equity Method Affiliates

We have made several minority interest investments in wind projects operated by various wind energy companies through limited liability entities with an affiliate of JPMorgan Chase & Co (“JPMorgan”), an affiliate of Invenergy LLC (“Invenergy”) and Bluestem Creston Ridge, LLC (“Bluestem”). The following table sets forth certain information related to our equity method investments.

Through these five equity method investments, we indirectly own minority interests in six limited liability holding companies that own twelve operating wind projects. See Note 2 for our accounting treatment of these investments and Note 13 for the aggregate financial position and results of operations of the significant holding companies.

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2. Summary of Significant Accounting Policies

Basis of Presentation

The condensed consolidated financial statements reflect all normal and recurring adjustments that, in the opinion of management, are necessary for a fair presentation of the financial position, results of operations, comprehensive income and cash flows for the periods presented. The preparation of financial statements in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from these estimates and such differences could be material. The results of operations for the periods presented are not necessarily indicative of the results to be expected for the entire year. Certain information and footnote disclosures normally included in our annual consolidated financial statements have been condensed or omitted. Certain amounts in the prior year have been reclassified to conform to the current year presentation, including the format of the revenue section of the income statement to include a calculation of Total Revenue. We also implemented ASU No. 2015-03, Interest – Imputation of Interest, which simplifies the presentation of debt issuance costs. See Recently Issued Accounting Pronouncements below and Note 8 for further information.

The condensed consolidated financial statements include the accounts of the Company and its controlled subsidiaries, including the Operating Partnership. All significant intercompany transactions and balances have been eliminated in consolidation.

Following the guidance for non-controlling interests in Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) 810, Consolidation, references in this report to our earnings per share and our net income and shareholders’ equity attributable to common shareholders do not include amounts attributable to non-controlling interests.

Financing Receivables

Financing receivables include financing energy efficiency and renewable energy project loans, receivables and direct financing leases.

Unless otherwise noted, we generally have the ability and intent to hold our financing receivables for the foreseeable future and thus they are classified as held for investment. Our ability and intent to hold certain financing receivables may change from time to time depending on a number of factors, including economic, liquidity and capital conditions. The carrying value of financing receivables held for investment represents the present value of the note, lease or other payments, net of any unearned fee income, which is recognized as income over the term of the note or lease using the effective interest method. Financing receivables that are held for investment are carried, unless deemed impaired, at cost, net of any unamortized acquisition premiums or discounts and include origination and acquisition costs, as applicable. Financing receivables that we intend to sell in the short-term are classified as held-for-sale and are carried at the lower of amortized cost or fair value on our balance sheet. The net purchases and proceeds from these sales of our held-for-sale financing receivables are recorded as an operating activity in our statement of cash flows based on our intent at the time of purchase. We may secure nonrecourse debt with the proceeds from our financing receivables.

We evaluate our financing receivables for potential delinquency or impairment on at least a quarterly basis and more frequently when economic or other conditions warrant such an evaluation. When a financing receivable becomes 90 days or more past due, and if we otherwise do not expect the debtor to be able to service all of its debt or other obligations, we will generally consider the financing receivable delinquent or impaired and place the financing receivable on non-accrual status and cease recognizing income from that financing receivable until the borrower has demonstrated the ability and intent to pay contractual amounts due. If a financing receivable’s status significantly improves regarding the debtor’s ability to service the debt or other obligations, we will remove it from non-accrual status.

A financing receivable is also considered impaired as of the date when, based on current information and events, it is determined that it is probable that we will be unable to collect all amounts due in accordance with the original contracted terms. Many of our financing receivables are secured by energy efficiency and renewable energy

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infrastructure projects. Accordingly, we regularly evaluate the extent and impact of any credit deterioration associated with the performance and value of the underlying project, as well as the financial and operating capability of the borrower, its sponsors or the obligor as well as any guarantors. We consider a number of qualitative and quantitative factors in our assessment, including, as appropriate, a project’s operating results, loan-to-value ratios and any cash reserves, the ability of expected cash from operations to cover the cash flow requirements currently and into the future, key terms of the transaction, the ability of the borrower to refinance the transaction, other credit support from the sponsor or guarantor and the project’s collateral value. In addition, we consider the overall economic environment, the sustainable infrastructure sector, the effect of local, industry, and broader economic factors, the impact of any variation in weather and the historical and anticipated trends in interest rates, defaults and loss severities for similar transactions.

If a financing receivable is considered to be impaired, we record an allowance to reduce the carrying value of the financing receivable to the present value of expected future cash flows discounted at the financing receivable’s contractual effective rate or the amount realizable from other contractual terms such as the currently estimated fair market value of the collateral less estimated selling costs, if repayment is expected solely from the collateral. We charge off financing receivables against the allowance when we determine the unpaid principal balance is uncollectible, net of recovered amounts.

Investments

Investments include debt securities that meet the criteria of ASC 320, Investments—Debt and Equity Securities. We have designated our debt securities as available-for-sale and carry these securities at fair value on our balance sheet. Unrealized gains and losses, to the extent not considered other than temporary impairment (“OTTI”), on available-for-sale debt securities are recorded as a component of accumulated other comprehensive income (“OCI”) in equity on our balance sheet.

We evaluate our investments for OTTI on at least a quarterly basis, and more frequently when economic or market conditions warrant such an evaluation. Our OTTI assessment is a subjective process requiring the use of judgments and assumptions. Accordingly, we regularly evaluate the extent and impact of any credit deterioration associated with the financial and operating performance and value of the underlying project. We consider a number of qualitative and quantitative factors in our assessment. We first consider the current fair value of the security and the duration of any unrealized loss. Other factors considered include changes in the credit rating, performance of the underlying project, key terms of the transaction, the value of any collateral and any support provided by the sponsor or guarantor.

To the extent that we have identified an OTTI for a security and intend to hold the investment to maturity and we do not expect that we will be required to sell the security prior to recovery of the amortized cost basis, we recognize only the credit component of OTTI in earnings. We determine the credit component using the difference between the securities’ amortized cost basis and the present value of its expected future cash flows, discounted using the effective interest method or its estimated collateral value. Any remaining unrealized loss due to factors other than credit, or the non-credit component, is recorded in accumulated OCI.

To the extent we hold investments with an OTTI and if we have made the decision to sell the security or it is more likely than not that we will be required to sell the security prior to recovery of its amortized cost basis, we recognize the entire portion of the impairment in earnings.

Premiums or discounts on investment securities are amortized or accreted into investment interest income using the effective interest method.

Real Estate

Real estate reflects land or other real estate held on our balance sheet. Real estate intangibles reflect the value of associated lease intangibles, net of any amortization. In accordance with ASC 805, Business Combinations, the fair value of the real estate acquired in a business combination with in-place leases is allocated to (i) the acquired tangible assets, consisting of land or other real property such as buildings, and (ii) the identified intangible assets and liabilities, consisting of the value of above-market and below-market leases and the value of other acquired intangible assets, based in each case on their fair values.

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The fair value of the tangible assets of an acquired leased property is determined by valuing the property as if it were vacant, and the “as-if-vacant” value is then allocated to land, building and tenant improvements, if any, based on the determination of the fair values of these assets. The as-if-vacant fair value of a property is determined by management based on an appraisal of the property by a qualified appraiser.

In allocating the fair value of the identified intangible assets and liabilities of an acquired property, above-market and below-market in-place lease values are recorded as intangible assets based on the present value (using an interest rate which reflects the risks associated with the leases acquired) of the difference between (i) the contractual amounts to be paid pursuant to the in-place leases, and (ii) management’s estimate of fair market lease rates for the corresponding in-place leases, measured over a period equal to the remaining term of the lease, including renewal periods likely of being exercised by the lessee. The capitalized above-market lease values are amortized as a reduction of rental income and the capitalized below-market lease values are amortized as an increase to rental income. We also record, as appropriate, an intangible asset for in-place leases. The value of the leases in place at the time of the transaction is equal to the potential revenue (rent and expenses) lost if the leases were not in place (during downtime) and that would be incurred to obtain the lease. The amortization is calculated over the initial term unless management believes that it is likely that the tenant would exercise the renewal option, whereby we would amortize the value attributable to the renewal over the renewal period. If a lease were to be terminated, all unamortized amounts relating to that lease would be written off.

We record the purchases of real estate, other than in a business combination (i.e. real estate with no in-place leases), as asset acquisitions that are recorded at cost, including acquisition and closing costs.

Our real estate is generally leased to tenants on a net lease basis, whereby the tenant is responsible for all operating expenses relating to the property, generally including property taxes, insurance, maintenance, repairs and capital expenditures. Scheduled rental revenue typically varies during the lease term and thus rental income is recognized on a straight-line basis, unless there is considerable risk as to collectability, so as to produce a constant periodic rent over the term of the lease. Accrued rental income is the aggregate difference between the scheduled rents which vary during the lease term and the income recognized on a straight-line basis and is recorded in other assets. Rental expenses (if any) are charged to operations as incurred.

Securitization of Receivables

We have established various special purpose entities or securitization trusts for the purpose of securitizing certain financing receivables or other debt investments. We determined that the trusts used in securitizations are variable interest entities, or VIEs, as defined in ASC 810, Consolidation. We typically serve as primary or master servicer of these trusts; however, as the servicer, we do not have the power to make significant decisions impacting the performance of the trusts. Based on an analysis of the structure of the trusts, under U.S. GAAP, we have concluded that we are not the primary beneficiary of the trusts as we do not have power over the trusts’ significant activities. Therefore, we do not consolidate these trusts in our condensed consolidated financial statements.

We account for transfers of financing receivables to these securitization trusts as sales pursuant to ASC 860, Transfers and Servicing, as we have concluded the transferred receivables have been isolated from the transferor (i.e., put presumptively beyond the reach of the transferor and its creditors, even in bankruptcy or other receivership) and we have surrendered control over the transferred receivables. We have received true-sale-at-law opinions for all of our securitization trust structures and non-consolidation legal opinions for all but one old securitization trust structure that support our conclusion regarding the transferred receivables. When we sell receivables in securitizations, we generally retain minor interests in the form of servicing rights and residual assets, which we refer to as securitization assets.

Gain or loss on the sale of receivables is calculated based on the excess of the proceeds received from the securitization (less any transaction costs) plus any retained interests obtained over the cost basis of the receivables sold. For retained interests, we generally estimate fair value based on the present value of future expected cash flows using our best estimates of the key assumptions of anticipated losses, prepayment rates, and current market discount rates commensurate with the risks involved.

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We initially account for all separately recognized servicing assets and servicing liabilities at fair value and subsequently measure such servicing assets and liabilities using the amortization method. Servicing assets and liabilities are amortized in proportion to, and over the period of, estimated net servicing income with servicing income recognized as earned. We assess servicing assets for impairment at each reporting date. If the amortized cost of servicing assets is greater than the estimated fair value, we will recognize an impairment in net income.

Our other retained interest in securitized assets, the residual assets, are classified as available-for-sale securities and carried at fair value on the condensed consolidated balance sheets in Other Assets. We generally do not sell our residual assets. Our residual assets are evaluated for impairment on a quarterly basis. Interest income related to the residual assets is recognized using the effective interest rate method. If there is a change in expected cash flows related to the residual assets, we calculate a new yield based on the current amortized cost of the residual assets and the revised expected cash flows. This yield is used prospectively to recognize interest income.

Cash and Cash Equivalents

Cash and cash equivalents include short-term government securities, certificates of deposit and money market funds, all of which had an original maturity of three months or less at the date of purchase. These securities are carried at their purchase price, which approximates fair value.

Restricted Cash

Restricted cash includes cash and cash equivalents set aside with certain lenders primarily to support deferred funding and other obligations outstanding as of the balance sheet dates. Restricted Cash is reported as part of Other Assets in the consolidated balance sheets.

Variable Interest Entities and Equity Method Investments in Affiliates

We account for our investment in entities that are considered voting or variable interest entities under ASC 810. We perform an ongoing assessment to determine the primary beneficiary of each entity as required by ASC 810. We have established various special purpose entities or securitization trusts for the purpose of securitizing certain financing receivables or other debt investments which are not consolidated in our financial statements as described in Securitization of Receivables above.

Substantially all of the activities of the special purpose entities that are formed for the purpose of holding our financing receivables and investments on our balance sheet are closely associated with our activities. Based on our assessment, we determined that we have power over and receive the benefits of these special purpose entities; hence, we are the primary beneficiary and should consolidate these entities under the provisions of ASC 810.

As described in Note 1, we made equity investments in various wind projects. We share in the cash flows and tax attributes according to a negotiated schedule. Wind projects are typically owned in partnerships structures (using limited liability corporations, or LLCs taxed as partnerships) where we, along with other large institutional investors, if any, receive a stated preferred return consisting of a priority distribution of the project’s cash flows, and in some cases, tax attributes. Once this preferred return is achieved, the partnership “flips” and the wind energy company which operates the project, receives a larger portion of the cash flows through its interest in the holding company and we, along with the other institutional investors, will have an on-going residual interest.

There were no new equity investments in wind projects in 2016, and each of the existing investments continue to be accounted for under the equity method of accounting as of March 31, 2016. Certain of our equity method investments were determined to be VIEs. Our maximum exposure to loss associated with all of our equity method investments is limited to our recorded value of our investments.

Under the equity method of accounting, the carrying value of our equity method investments is determined based on amounts we invested, adjusted for the equity in earnings or losses of investee allocated based on the limited liability entity agreement, less distributions received. Because the limited liability entity and holding company agreements contain preferences with regard to cash flows from operations, capital events and liquidation, we reflect our share of profits and losses by determining the difference between our “claim on the investee’s book value” at the end and the beginning of the period. This claim is calculated as the amount we would receive (or be obligated to pay) if the investee were to liquidate all of its assets at recorded amounts determined in accordance with U.S. GAAP and distribute the resulting cash to creditors and investors in accordance with their respective priorities.

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This method is commonly referred to as the hypothetical liquidation at book value method or (“HLBV”). Intra company gains and losses are eliminated for an amount equal to our interest and are reflected in the share in loss from equity method investments in affiliates in the consolidated statements of operations. Cash distributions received from our equity method investments are classified as operating cash flows to the extent of cumulative HLBV earnings. Any additional cash flows are deemed to be returns of the investment and are classified as investing cash flows. We have elected to recognize earnings from these investments one quarter in arrears to allow for the receipt of financial information.

We evaluate the realization of our investment accounted for using the equity method if circumstances indicate that our investment is OTTI. OTTI occurs when the estimated fair value of an investment is below the carrying value and the difference is determined to not be recoverable. This evaluation requires significant judgment regarding, but not limited to, the severity and duration of the impairment; the ability and intent to hold the securities until recovery; financial condition, liquidity, and near-term prospects of the issuer; specific events; and other factors. Based on an evaluation of our equity method investments, we determined that no impairment had occurred during the three months ended March 31, 2016 or 2015.

Derivative Financial Instruments

We may utilize derivative financial instruments, primarily interest rate swaps, to manage, or hedge, our interest rate risk exposures associated with new debt issuances, to manage our exposure to fluctuations in interest rates on variable rate debt, and to optimize the mix of our fixed and floating-rate debt. In addition, we may use forward-starting interest rate swap contracts to manage a portion of our interest rate exposure for anticipated refinancing of our long-term debts. Our objective is to manage the impact of interest rates on the results of operations and cash flows and the market value of our debt.

We use interest rate swaps designated as cash flow hedges to manage our interest rate exposures associated with new debt issuances and to manage our exposure to fluctuations in interest rates on variable rate debt. We attempt to use derivative instruments that are considered highly effective in reducing our exposure to the interest rate risk that they are designated to hedge. This effectiveness is essential in order to qualify for hedge accounting. Instruments that meet these hedging criteria are formally designated as hedges at the inception of the derivative contract. Derivatives are recorded on the consolidated balance sheet at fair value. If a derivative is designated as a cash flow hedge, the effective portions of changes in the fair value of the derivative are recorded in Accumulated Other Comprehensive Income, net of associated deferred income tax effects, in our Consolidated Statements of Stockholders’ Equity and Comprehensive Income (Loss) and are recognized in the Consolidated Statements of Operations when the hedged item affects earnings. Changes in fair value of the ineffective portions of these hedges are recognized in Other, net in our Consolidated Statements of Operations. For derivative instruments not designated as hedging instruments, changes in fair value are recognized in our Consolidated Statements of Operations in the period that the change occurs. We assess, both at the inception of the hedge and on an ongoing basis, whether the derivatives that are used in hedging transactions are highly effective in offsetting changes in cash flows of hedged items. We do not hold derivatives for trading purposes.

Interest rate swap contracts contain a credit risk that counterparties may be unable to fulfill the terms of the agreement. We attempt to minimize that risk by evaluating the creditworthiness of its counterparties, who are limited to major banks and financial institutions, and do not anticipate nonperformance by the counterparties.

Income Taxes

We elected and qualified to be taxed as a REIT for U.S. federal income tax purposes, commencing with our taxable year ended December 31, 2013. To qualify as a REIT, we must meet a number of organizational and operational requirements, including a requirement that we currently distribute at least 90% of our net taxable income, excluding capital gains, to our shareholders. We intend to continue to meet the requirements for qualification as a REIT. As a REIT, we are not subject to U.S. federal corporate income tax on that portion of net income that is currently distributed to our owners. However, our taxable REIT subsidiaries (“TRS”) will generally be subject to U.S. federal, state, and local income taxes as well as taxes of foreign jurisdictions, if any.

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We account for income taxes of our TRS using the asset and liability method. Deferred tax assets and liabilities are recognized for the estimated future tax consequences attributable to the differences between the consolidated financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates in effect for the year in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities from a change in tax rates is recognized in earnings in the period when the new rate is enacted.

We apply accounting guidance with respect to how uncertain tax positions should be recognized, measured, presented, and disclosed in the financial statements. This guidance requires the accounting and disclosure of tax positions taken or expected to be taken in the course of preparing our tax returns to determine whether the tax positions are “more likely than not” to be sustained by the applicable tax authority. We are required to analyze all open tax years, as defined by the statute of limitations, for all major jurisdictions, which includes U.S. federal and certain states. We have no examinations in progress, none are expected at this time, and years 2012 through 2014 are open. As of March 31, 2016 and December 31, 2015, we had no uncertain tax positions. Our policy is to recognize interest expense and penalties related to income tax matters as a component of other expense. There were no accrued interest and penalties as of March 31, 2016 and December 31, 2015, and no interest and penalties were recognized during the three months ended March 31, 2016 and 2015.

Equity-Based Compensation

At the time of completion of our IPO, we adopted our 2013 Equity Incentive Plan (the “2013 Plan”), which provides for grants of stock options, stock appreciation rights, restricted stock units, shares of restricted common stock, phantom shares, dividend equivalent rights, long-term incentive-plan units (“LTIP units”) and other restricted limited partnership units issued by our Operating Partnership and other equity-based awards. From time to time, we may award unvested restricted stock as compensation to members of our senior management team, our independent directors, employees, advisors, consultants and other personnel under our 2013 Plan.

We record compensation expense for stock awards in accordance with ASC 718, Compensation—Stock Compensation. We record compensation expense for unvested shares that vest solely based on service conditions on a straight-line basis over the vesting period based upon the fair market value of the shares on the date of grant, adjusted for forfeitures. For awards where the vesting is contingent upon achievement of certain performance targets, compensation expense is recorded over the requisite service period (which includes the performance period) based on our estimate of the achievement of the various performance targets, adjusted for forfeitures. Our share price at the date of grant and actual performance results at the end of the performance period determine the fair value and the number of shares that will ultimately be awarded. The award earned is generally between 0% and 150% of the initial target, depending on the extent to which the performance target are met.

Earnings Per Share

We compute earnings per share of common stock in accordance with ASC 260, Earnings Per Share. Basic earnings per share is calculated by dividing net income attributable to controlling stockholders (after consideration of the earnings allocated to unvested shares of restricted common stock or restricted stock units) by the weighted-average number of shares of common stock outstanding during the period excluding the weighted average number of unvested shares of restricted common stock or restricted stock units (“participating securities” as defined in Note 12). Diluted earnings per share is calculated by dividing net income attributable to controlling stockholders by the weighted-average number of shares of common stock outstanding during the period plus other potentially dilutive securities. No adjustment is made for shares that are anti-dilutive during a period.

Segment Reporting

We provide and arrange debt and equity financing for sustainable infrastructure projects and report all of our activities as one business segment.

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Recently Issued Accounting Pronouncements

Revenue from Contracts with Customers

In May 2014, the FASB issued Accounting Standards Update (“ASU”) No. 2014-09, Revenue from Contracts with Customers, requiring an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. The updated standard will replace most existing revenue recognition guidance in U.S. GAAP when it becomes effective and permits the use of either the retrospective or cumulative effect transition method. The FASB proposed delaying the effective date of the standard by one year and issued a proposal that is intended to clarify and simplify the guidance. The updated standard becomes effective for us on January 1, 2018 and we expect will be first presented in our March 31, 2018, Form 10-Q. We have not yet selected a transition method, and we are currently evaluating the effect that the updated standard will have on our consolidated financial statements and related disclosures.

Debt Issuance Costs

In April 2015, the FASB issued ASU No. 2015-03, Interest – Imputation of Interest, which simplifies the presentation of debt issuance costs. ASU 2015-03 requires debt issuance costs related to long-term debt to be presented in the balance sheet as a reduction to the carrying amount of the related debt liability, consistent with the presentation of discounts. ASU 2015-03 is effective for fiscal years beginning after December 15, 2015, and for interim periods within those fiscal years, and is eligible for early adoption. We have adopted this standard in our consolidated financial statements for our nonrecourse debt as of December 31, 2015. As allowed under the ASU, we continue to record unamortized issuance costs related to our credit facility in Other Assets. We do not have a material amount of unamortized debt issuance costs and thus the adoption of the new standard did not have a material effect on our consolidated financial statements and related disclosures. See Note 8 for further information.

Income Taxes

In November 2015, the FASB issued ASU No. 2015-17, “Income Taxes – Balance Sheet Classification of Deferred Taxes.” The purpose of the standard is to simplify the presentation of deferred taxes on a classified balance sheet. Under current GAAP, deferred income tax assets and liabilities are separated into current and noncurrent amounts in the balance sheet. The amendments in ASU 2015-17 require that all deferred tax assets and liabilities be classified as noncurrent in the balance sheet. The ASU will be effective for us beginning January 1, 2017, including interim periods in the calendar year 2017, but with early adoption permitted. Since we do not report a classified balance sheet, we do not expect the adoption of ASU 2015-17 to have a material impact on our consolidated financial statements and related disclosures.

Leases

In February 2016, the FASB issued ASU No. 2016-02, “Leases (Topic 842).” Under the new guidance, lessees will be required to recognize the following for all leases (with the exception of short-term leases) at the commencement date: (a) a lease liability, which is a lessee’s obligation to make lease payments arising from a lease, measured on a discounted basis; and (b) a right-of-use asset, which is an asset that represents the lessee’s right to use, or control the use of, a specified asset for the lease term. Changes were made to align lessor accounting with the lessee accounting model and ASU No. 2014-09, “Revenue from Contracts with Customers.” The new lease guidance simplifies the accounting for sale and leaseback transactions primarily because lessees must recognize lease assets and lease liabilities. The ASU will be effective for us beginning January 1, 2019. Early application is permitted for all public business entities upon issuance. Lessees must apply a modified retrospective transition approach for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements. The modified retrospective approach would not require any transition accounting for leases that expired before the earliest comparative period presented. Lessees may not apply a full retrospective transition approach. We are currently evaluating the impact of the application of this accounting standard update on our consolidated financial statements and related disclosures.

Share-Based Payments

In March 2016, the FASB issued ASU No. 2016-09, “Compensation – Stock Compensation (Topic 718), Improvements to Employee Share-Based Payment Accounting.” Under the new guidance, entities will be required to recognize all income tax effects of awards to be recognized in the income statement when the awards vest or are settled. In addition, the new guidance will allow an employer to repurchase up to the maximum statutory income tax rates in the applicable jurisdictions without triggering liability accounting and allow an entity to make an entity-wide accounting policy election to either estimate the number of awards that are expected to vest or account for forfeitures as they occur. The guidance is effective for us beginning after December 15, 2016, and interim periods

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within those years. Early adoption is permitted in any annual or interim period for which financial statements haven’t been issued or made available for issuance, but all of the guidance must be adopted in the same period. If we early adopt the guidance in an interim period, any adjustments must be reflected as of the beginning of the calendar year that includes that interim period. We anticipate implementing this standard in the second quarter of 2016 and do not expect the implementation to have a material impact on our consolidated financial statements and related disclosures.

Consolidation

In February 2015, the FASB issued ASU No. 2015-02 Consolidation (Topic 810) Amendments to the Consolidation Analysis, which affects the following areas of the consolidation analysis: limited partnerships and similar entities, evaluation of fees paid to a decision maker or service provider as a variable interest and in determination of the primary beneficiary, effect of related parties on the primary beneficiary determination and for certain investment funds. ASU No. 2015-02 is effective for us for our fiscal year ending December 31, 2016 and interim periods therein. The adoption of this standard did not have a material impact on our consolidated financial position, results of operations and cash flows.

Equity Method Investments

In March 2016, the FASB issued ASU No. 2016-07 Simplifying the Transition to the Equity Method of Accounting. The new standard eliminates the requirement for an investor to retroactively apply the equity method when an increase in ownership interest in an investee triggers equity method accounting. It also simplifies in certain areas the accounting for equity method investments. The new standard becomes effective for us in fiscal year ending December 31, 2017 and interim periods therein. The adoption of this standard is not expected to have a material impact on our consolidated financial position, results of operations and cash flows.

3. Fair Value Measurements

Fair value is defined as the price that would be received for an asset or paid to transfer a liability in an orderly transaction between market participants on the measurement date. The fair value accounting guidance provides a three-level hierarchy for classifying financial instruments. The levels of inputs used to determine the fair value of our financial assets and liabilities carried on the balance sheet at fair value and for those for which only disclosure of fair value is required are characterized in accordance with the fair value hierarchy established by ASC 820, Fair Value Measurements. Where inputs for a financial asset or liability fall in more than one level in the fair value hierarchy, the financial asset or liability is classified in its entirety based on the lowest level input that is significant to the fair value measurement of that financial asset or liability. We use our judgment and consider factors specific to the financial assets and liabilities in determining the significance of an input to the fair value measurements. As of March 31, 2016 and December 31, 2015, only our residual assets (described in Note 5), financing receivables held-for-sale, interest rate swaps and investments available-for-sale, if any, were carried at fair value on the condensed consolidated balance sheets on a recurring basis. The three levels of the fair value hierarchy are described below:

Unless otherwise discussed below, fair value is measured using a discounted cash flow model, contractual terms and Level 3 unobservable inputs which consist of base interest rates and spreads over base rates which are based upon market observation and recent comparable transactions. An increase in these unobservable inputs would result in a lower fair value and a decline would result in a higher fair value. The financing receivables held for sale are carried at the lower of cost or market.

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Investments

We carry our investments in debt securities at fair value on our balance sheet as investments available-for-sale. The following table reconciles the beginning and ending balances for our Level 3 investments that are carried at fair value on a recurring basis:

For investments held at fair value, we used a range of interest rate spreads of 2% to 5% based upon comparable transactions.

As of December 31, 2015, we held a $13 million senior secured debt investment, along with a large financial institution who held the remaining approximately $45 million in outstanding debt securities, in an operating wind project that was being foreclosed upon and expected to be sold. The foreclosure and sale was completed in 2016 and we recovered the full value of our debt investment and recognized a gain of $0.8 million.

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Interest Rate Swap Agreements

The fair values of the derivative financial instruments are determined using widely accepted valuation techniques including discounted cash flow analysis on the expected cash flows of each derivative. We have determined that the significant inputs, such as interest yield curves and discount rates, used to value our derivatives fall within Level 2 of the fair value hierarchy and that the credit valuation adjustments associated with our counterparties and our own credit risk utilize Level 3 inputs, such as estimates of current credit spreads to evaluate the likelihood of our or our counterparties default. As of March 31, 2016 and December 31, 2015, we assessed the significance of the impact of the credit valuation adjustments on the overall valuation of our derivative positions and determined that the credit valuation adjustments were not significant to the overall valuation of our derivatives. As a result, we determined that our derivative valuations in their entirety are classified in Level 2 of the fair value hierarchy. The fair values of the derivative financial instruments are included in the accounts payable, accrued expenses and other line item in the consolidated balance sheets.

Non-recurring Fair Value Measurements

Our financial statements may include non-recurring fair value measurements related to acquisitions and non-monetary transactions, if any. Assets acquired in a business combination are recorded at their fair value. We may use third party valuation firms to assist us with developing our estimates of fair value.

Concentration of Credit Risk

Financing receivables, investments and leases consist of primarily U.S. federal government-backed receivables, investment grade state and local government receivables and receivables from various sustainable infrastructure projects and do not, in our view, represent a significant concentration of credit risk. See Note 6 for an analysis by type of obligor. As described above, we do not believe we have a significant credit exposure to our interest rate swap providers. We had cash deposits that are subject to credit risk as shown below:

4. Non-Controlling Interest

Non-Controlling Interest in Consolidated Entities

Units of limited partnership interests in the Operating Partnership (“OP units”) that are owned by limited partners other than the Company are included in non-controlling interest on our consolidated balance sheets. The outstanding OP units held by outside limited partners represents approximately 1% of our outstanding OP units and are redeemable for cash, or at our option, for a like number of shares of our common stock. No OP units were exchanged for shares of common stock during the three months ended March 31, 2016. We exchanged 46,290 OP units held by our non-controlling interest holders for the same number of shares of our common stock during the three months ended March 31, 2015. The non-controlling interest holders are generally allocated their pro rata share of income, other comprehensive income and equity transactions.

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5. Securitization of Receivables

The following summarizes certain transactions with our securitization trusts:

In connection with securitization transactions, we typically retain servicing responsibilities and residual assets. In certain instances, we receive annual servicing fees ranging from 0.05% to 0.20% of the outstanding balance. Included in other assets in our condensed consolidated balance sheets are our servicing assets at amortized cost and our residual assets at fair value. Our residual assets are subordinate to investors’ interests, and their values are subject to credit, prepayment and interest rate risks on the transferred financial assets. The investors and the securitization trusts have no recourse to our other assets for failure of debtors to pay when due. In computing gains and losses on securitizations, we use the same discount rates we use for the fair value calculation of residual assets, which are determined based on a review of comparable market transactions. Depending on the nature of the transaction risks, the discount rate ranged from 4% to 8%.

As of March 31, 2016 and December 31, 2015, our managed assets were approximately $3.2 billion, of which $1.8 billion were securitized assets held in unconsolidated securitization trusts. There were no securitization credit losses during the three months ended March 31, 2016 or 2015, and no material securitization delinquencies as of March 31, 2016 and December 31, 2015. The securitized assets consist of financing receivables from contracts for the installation of energy efficiency and other technologies in facilities owned by, or operated for or by, the federal government where the ultimate obligor is the U.S. federal government. The contracts may have guarantees of energy savings from third party service providers, the majority of which are entities rated investment grade by an independent rating agency. Based on the nature of the receivables and experience to date, we do not currently expect to incur any credit losses on the receivables sold.

6. Our Portfolio

As of March 31, 2016, our Portfolio included approximately $1.4 billion of financing receivables, investments, real estate and equity method investments on our balance sheet. The financing receivables and investments are typically collateralized by contractually committed debt obligations of government entities or private high credit quality obligors and are often supported by additional forms of credit enhancement, including security interests and supplier guaranties. The real estate is typically land and related lease intangibles for long-term leases to wind and solar projects with high credit quality obligors. The equity method investments represent our minority equity investments in wind projects.

The following is an analysis of our Portfolio by type of obligor and credit quality as of March 31, 2016:

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The components of financing receivables as of March 31, 2016 and December 31, 2015, were as follows:

In accordance with the terms of certain financing receivables purchase agreements, payments of the purchase price is scheduled to be made over time, generally within twelve months of entering into the transaction, and as a result, we have recorded deferred funding obligations of $63 million and $108 million as of March 31, 2016 and December 31, 2015, respectively.

The following table provides a summary of our anticipated maturity dates of our financing receivables and investments and the weighted average yield for each range of maturities as of March 31, 2016:

Our real estate is leased to renewable energy projects, typically under long-term triple net leases with expiration dates that range between the years 2033 and 2051 under the initial terms and 2047 and 2080 if all extensions are exercised. The components of our real estate portfolio as of March 31, 2016 and December 31, 2015, were as follows:

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There are conservation easement agreements covering several of our properties that limit the use of the property upon expiration of the respective leases. The real estate related intangible assets are amortized on a straight-line basis over the contracted lease term. As of March 31, 2016, the future amortization expense of these intangible assets is as follows:

As of March 31, 2016, the future minimum rental income payments under our land lease agreements are as follows:

We had no financing receivables, investments or leases that were impaired or on nonaccrual status as of March 31, 2016 or December 31, 2015. There was no provision for credit losses for the three months ended March 31, 2016 or 2015. We did not have any loan modifications that qualify as trouble debt restructurings for the three months ended March 31, 2016 or 2015.

7. Credit Facility

We have a senior secured revolving credit facility which provides for total maximum advances of $1.5 billion with the aggregate amount outstanding at any point in time of $500 million and which consists of two components, the G&I Facility and the PF Facility. The “G&I Facility” can be used to leverage certain qualifying government and institutional financings entered into by us and the “PF Facility” can be used to leverage certain qualifying project financings entered into by us.

The facility was originally entered into in 2013 and has been amended a number of times, including in January 2016. The effect of the various amendments has been to increase the size, flexibility and allocation of the facility and extend the termination date to July 19, 2019. The limit of borrowing at any point in time and the total maximum advances is summarized below:

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Loans under the G&I Facility bear interest at a rate equal to the London Interbank Offered Rate (“LIBOR”) plus 1.5% or, under certain circumstances, 1.5% plus the highest of (i) the Federal Funds Rate plus 0.5%, (ii) the rate of interest publicly announced by Bank of America from time to time as its “prime rate,” and (iii) LIBOR plus 1.0%. Loans under the PF Facility bear interest at a rate equal to LIBOR plus 2.5% or, under certain circumstances, 2.5% plus the highest of (i) the Federal Funds Rate plus 0.5%, (ii) the rate of interest publicly announced by Bank of America from time to time as its “prime rate,” and (iii) LIBOR plus 1.0%. Under the PF Facility, we also have the option to borrow at a fixed rate of interest until the expiration of the credit facility in July 2019. The fixed rate is determined by agreement with the Administrative Agent and is based on the prevailing US SWAP rate of an equivalent term to the average-life of the fixed rate portion of the borrowing plus an agreed upon margin. The loans are made through wholly-owned special purpose subsidiaries (the “Borrowers”) and we have guaranteed the obligations of the Borrowers under the credit facility pursuant to (x) a Continuing Guaranty, dated July 19, 2013, and (y) a Limited Guaranty, dated July 19, 2013, both as amended and restated.

Any financing we propose to be included in the borrowing base as collateral under the facility is subject to the approval of the administrative agent in its sole discretion and the payment of a placement fee. We may, with the consent of the administrative agent, borrow against new projects before such projects become Approved Financings (as defined in the PF Facility loan agreement) but after they have been pledged as collateral. The amount eligible to be drawn under the facility for purposes of financing such investments will be based on a discount to the value of each investment or an applicable valuation percentage. Under the G&I Facility, the applicable valuation percentage for non-delinquent investments is 85% in the case of a U.S. federal government obligor, 80% in the case of an institutional obligor or a state and local obligor, and with respect to other obligors or in certain circumstances, such other percentage as the administrative agent may prescribe. Under the PF Facility, the applicable valuation percentage is 67% or such other percentage as the administrative agent may prescribe. The sum of approved financings after taking into account the valuation percentages and any changes in the valuation of the financings in accordance with the loan agreements determines the borrowing capacity, subject to the overall facility limits described above.

The following table provides additional detail on our credit facility as of March 31, 2016 and December 31, 2015:

We incurred approximately $13 million of costs associated with the credit facility that have been capitalized (included in other assets on the consolidated balance sheets) and are being amortized on a straight-line basis over the term of the Loan Agreements. On each monthly payment date, the Borrowers shall also pay to the administrative agent, for the benefit of the lenders, certain availability fees for each Loan Agreement equal to 0.50%, divided by 360, multiplied by the excess of the available borrowing capacity under each component of the credit facility over the actual amount borrowed under such component.

The credit facility contains terms, conditions, covenants, and representations and warranties that are customary and typical for a transaction of this nature, including various affirmative and negative covenants, and limitations on the incurrence of liens and indebtedness, investments, fundamental organizational changes, dispositions, changes in the nature of business, transactions with affiliates, use of proceeds and stock repurchases.

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The credit facility also includes customary events of default, including the existence of a default in more than 50% of underlying financings. The occurrence of an event of default may result in termination of the credit facility, acceleration of amounts due under the credit facility, and accrual of default interest at a rate of LIBOR plus 2.50% in the case of the G&I Facility and at a rate of LIBOR plus 5.00% in the case of the PF Facility.

We were in compliance with the required financial covenants described below at each quarterly reporting date that such covenants were applicable:

8. Nonrecourse Debt

Asset-Backed Nonrecourse Debt

We have outstanding the following nonrecourse asset-backed debt and bank loans (dollars in millions):

Outstanding amounts under the nonrecourse asset-backed debt agreements and bank loans and the value of assets pledged as security are as follows (dollars in millions):

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We have pledged the ownership interest in the relevant assets or the relevant assets themselves to bankruptcy remote entities as security for the nonrecourse debt. The assets and credit of these entities are not available to satisfy any of our other debts and obligations, except as set forth in the debt agreements. The debtors can only look to the cash flows of the pledged assets to satisfy the debt and we are not liable for nonpayment of such cash flows. The debt agreements contain terms, conditions, covenants, and representations and warranties that are customary and typical for a transaction of this nature, including limitations on the incurrence of liens and indebtedness, investments, fundamental organizational changes, dispositions, changes in the nature of business, transactions with affiliates, use of proceeds and stock repurchases. The agreements also include customary events of default, the occurrence of which may result in termination of the agreements, acceleration of amounts due, and accrual of default interest. We typically act as servicer for the debt transactions.

We have guaranteed the performance of the representations and warranties and other obligations of certain of our subsidiaries under certain of the debt agreements and provided an indemnity against certain losses from “bad acts” of such subsidiaries including fraud, failure to disclose a material fact, theft, misappropriation, voluntary bankruptcy or unauthorized transfers. In the case of the debt secured by our wind equity interests, we have also guarantied our compliance with certain tax matters and certain obligations if JPMorgan exercises its right to withdraw from our partnerships.

The HASI Sustainable Yield Bond (“HASI SYB”) 2015-1 consists of two notes, (i) $101 million in aggregate principal amount of 4.28% HASI SYB 2015-1A, Class A Bonds (the “Class A Bonds”) and (ii) $18 million in aggregate principal amount of 5.0% HASI SYB 2015-1B, Class B Bonds (the “Class B Bonds”), both with an anticipated repayment date in October 2034. The Class A Bonds rank senior to the Class B Bonds in priority of payment. We retained the Class B Bonds. The other loan and debt transactions were negotiated with, and held by, commercial banks, including one loan agreement that has a corporate financial subsidiary as a co-lender.

In connection with several of our nonrecourse debt borrowings, we have entered into the following interest rate swaps that are designated as cash flow hedges (dollars in millions):

The total fair value of our hedges relating to interest rate hedges that are effective in offsetting variable cash flows is reflected as unrealized losses in accumulated other comprehensive income and in Accounts payable, accrued expenses and other in the accompanying consolidated balance sheet. As of March 31, 2016 and December 31, 2015, all of our derivatives were designated as hedging instruments and there was no ineffectiveness recorded on our designated hedges and no portion of the Accumulated other comprehensive income, net of associated deferred income tax effects, related to our interest rate hedges was reclassified into interest expense.

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Other Nonrecourse Debt

We have other nonrecourse debt that was used to finance certain of our financing receivables for the term of the financing receivables. Amounts due under nonrecourse notes are secured by financing receivables with a carrying value of approximately $91 million and $97 million as of March 31, 2016 and December 31, 2015, respectively, and there is no recourse to our general assets. Debt service payment requirements, in a majority of cases, are equal to or less than the cash flows received from the underlying financing receivables.

Additional information related to other nonrecourse debt by interest rate is as follows:

The stated minimum maturities of nonrecourse debt as of March 31, 2016, were as follows:

The stated minimum maturities of nonrecourse debt above include only the mandatory minimum principal payments. To the extent there are additional cash flows received from Strong Upwind Holdings II, LLC, Strong Upwind Holdings III, LLC or Buckeye Wind Energy Class B Holdings LLC, these additional cash flows are required to be used to make additional principal payments against the respective HASI SYB Loan Agreement 2015-1 and HASI SYB Loan Agreement 2015-2 notes.

9. Commitments and Contingencies

Litigation

The nature of our operations exposes us to the risk of claims and litigation in the normal course of our business. Other than non-material litigation arising out of the ordinary course of business, we are not currently subject to any legal proceedings that are probable of having a material adverse effect on our financial position, results of operations or cash flows.

10. Income Tax

We recorded a tax expense of less than $0.1 million for the three months ended March 31, 2016 and a tax benefit of less than $0.1 million for the three months ended March 31, 2015. Our income tax expense and benefit was determined using a federal rate of 35% and a combined state rate, net of federal benefit, of 5%.

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11. Equity

Dividends and Distributions

Our board of directors declared the following dividends in 2015 and 2016:

We completed the following public offerings of common stock in 2015:

Awards of Shares of Restricted Common Stock under our 2013 Plan

We recognize equity-based compensation expense as described in Note 2 and have issued both awards with service conditions and awards with both service and performance conditions. During the three months ended March 31, 2016, our board of directors awarded employees and directors 357,640 shares of restricted common stock that vest in 2016 to 2019 and 290,330 shares of restricted common stock to certain employees that vest upon the achievement of certain performance targets. As of March 31, 2016, we have concluded that it is probable that the performance conditions will be met.

For both the three months ended March 31, 2016 and 2015, we recorded $2 million of equity-based compensation expense. The total unrecognized compensation expense related to awards of shares of restricted common stock was approximately $19 million as of March 31, 2016, that is expected to be recognized over a weighted-average term of approximately two years. The calculation of the equity-based compensation expense assumes a forfeiture rate up to 5%.

A summary of the unvested shares of restricted common stock that have been issued is as follows:

12. Earnings per Share of Common Stock

Both the net income or loss attributable to the non-controlling OP units and the non-controlling limited partners’ outstanding OP units have been excluded from the net of income or loss and the diluted earnings per share calculation attributable to common stockholders.

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Unvested share-based payment awards that contain non-forfeitable rights to dividends or dividend equivalents (whether paid or unpaid) are participating securities and are included in the computation of earnings per share pursuant to the two-class method. Any shares of common stock which, if included in the diluted earnings per share calculation, would have an anti-dilutive effect have been excluded from the diluted earnings per share calculation.

The computation of basic and diluted earnings per common share is as follows:

13. Equity Method Investments in Affiliate

Strong Upwind

As described in Notes 1 and 2, we have noncontrolling equity investments in entities that own minority interests in wind projects. We recognized income of $0.3 million and a loss of $0.1 million during the three months ended March 31, 2016 and 2015, respectively, from our equity method investments.

The following is a summary of the consolidated financial position and results of operations of the significant holding companies, accounted for using the equity method:

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Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

In this Form 10-Q, unless specifically stated otherwise or the context otherwise indicates, references to “we,” “our,” “us,” and “HASI” refer to Hannon Armstrong Sustainable Infrastructure Capital, Inc., a Maryland corporation, Hannon Armstrong Sustainable Infrastructure, L.P., and any of our other subsidiaries. Hannon Armstrong Sustainable Infrastructure, L.P. is a Delaware limited partnership of which we are the sole general partner and to which we refer in this Form 10-Q as our “Operating Partnership.”

The following discussion is a supplement to and should be read in conjunction with the accompanying condensed consolidated financial statements and related notes and with our 2015 Form 10-K, that was filed with the SEC.

Our Business

We provide debt and equity financing to the energy efficiency and renewable energy markets. We focus on providing preferred or senior level capital to established sponsors and high credit quality obligors for assets that generate long-term, recurring and predictable cash flows.

We are internally managed and our management team has extensive industry knowledge and experience having completed its first renewable energy financing over 25 years ago and its first energy efficiency financing over 15 years ago. We have deep and long-standing relationships in the markets we target with leading energy service providers, manufacturers, project developers and owners. We originate many of our transactions through programmatic finance relationships with global energy service companies (“ESCOs”), such as Honeywell International, Ingersoll Rand, Johnson Controls, Schneider Electric, Siemens and United Technologies. We also originate transactions with renewable energy manufacturers, developers and operators such as EDF Renewable Energy, EDP Renewables, E.ON, First Solar, Invenergy, SunPower and other companies who own and operate renewable energy projects, including a number of U.S. utility companies. Additionally, we rely on relationships with a variety of key financial participants, including institutional investors, private equity funds, senior lenders, and investment and commercial banks, as well as leading intermediaries, to complement our origination and financing activities. We believe we are the leading provider of financing for energy efficiency projects for the U.S. federal government, the largest property owner and energy user in the United States.

We focus our investment activities primarily on:

We may also provide financing solutions for other projects, such as water or communications infrastructure, that improve water or energy efficiency, increase energy system resiliency, positively impact the environment or more efficiently use natural resources.

Our goal is to deliver attractive risk-adjusted returns to our stockholders by investing in projects that generate long-term, recurring and predictable cash flows or cost savings. The cash flows or cost savings are generally generated from proven technologies that minimize performance uncertainty, enabling us to more accurately predict project cash flow over the term of the financing or investment. We provide capital through debt financings and a variety of preferred and common equity structures with a preference for structures in which we hold a senior or preferred position in the capital structure.

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We completed approximately $213 million of transactions during the three months ended March 31, 2016, compared to approximately $104 million in the same period in 2015. Our strategy includes holding a large portion of these transactions on our balance sheet. As of March 31, 2016 we held approximately $1.4 billion of transactions on our balance sheet, including approximately 56% of our 2016 transactions. The transactions that we hold on our balance sheet as of a given date, which we refer to as our “Portfolio” included the following as of March 31, 2016:

For more information on the assets included in our Portfolio, see the “Our Portfolio” section of Financial Condition and Results of Operation discussed below.

We also originate transactions for securitization trusts or similar vehicles that we manage or service in which institutional investors purchase all or a portion of the economics of the transaction and where we receive upfront revenues and in some cases, ongoing fees for managing the assets. As of March 31, 2016, we managed approximately $1.8 billion in these trusts or vehicles that are not consolidated on our balance sheet. When combined with our Portfolio, as of March 31, 2016, we manage approximately $3.2 billion of assets which we refer to as our managed assets.

Since April 2013, we have raised net proceeds of approximately $470 million in public offerings of our common stock and completed approximately $610 million of nonrecourse borrowings and secured a credit facility with maximum capacity of $500 million.

Our financings typically benefit from contractually committed obligations of government entities or private, high credit quality obligors. The cash flows or cost savings are generally produced from proven technologies that minimize performance uncertainty, enabling us to more accurately predict project cash flows over the term of the financing or investment. We provide debt and equity financing for energy efficiency projects, which reduce the amount or cost of energy usage. We often work with ESCOs who achieve these savings by improving or installing various building components, including HVAC systems, lighting, energy controls, roofs, windows, building shells, and/or combined heat and power systems. We are assigned the payment stream and other contractual rights, often using our pre-existing master purchase agreements with the ESCOs. Our financings are generally also secured by the installed improvements.

We also provide debt and equity financing, or own the land used, for projects that deploy renewable energy sources such as solar or wind. We focus on financing renewable energy projects that use proven technology and that often have contractually committed agreements, such as power purchase agreements (“PPAs”), with high credit quality utilities or large electricity users under which the utility or user purchases the power produced by the project at a minimum price with potential price escalators for a portion of the project’s estimated life. These projects are building or facility specific and may be combined with other energy efficiency projects or are standalone projects designed to sell power to electric utilities or large users.

We have a large and active pipeline of potential new opportunities that are in various stages of our underwriting process. We refer to potential opportunities as being part of our pipeline if we have determined that the project fits within our investment strategy and exhibits the appropriate risk/reward characteristics through an initial credit analysis, including a quantitative and qualitative assessment of the opportunity, as well as research on the market and sponsor. Our pipeline of transactions that could potentially close in the next 12 months consists of opportunities in which we will be the lead originator, as well as projects in which we may participate with other institutional investors. As of March 31, 2016, our pipeline consisted of more than $2.5 billion in new debt and equity opportunities. There can, however, be no assurance that any or all of the transactions in our pipeline will be completed.

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We elected to be, and intend to continue to operate our business so as to qualify to be taxed as a REIT for U.S. federal income tax purposes, commencing with our taxable year ended December 31, 2013. We also intend to continue to operate our business in a manner that will permit us to maintain our exception from registration as an investment company under the 1940 Act.

Factors Impacting our Operating Results

We expect that our results of operations will be affected by a number of factors and will primarily depend on the size of our Portfolio, including the mix of transactions which we hold in our Portfolio, the income we receive from securitizations, syndications and other services, our Portfolio’s credit risk profile, changes in market interest rates and liquidity, commodity prices, U.S. federal, state and/or municipal governmental policies, general market conditions in local, regional and national economies and our ability to qualify as a REIT and maintain our exception from registration as an investment company under the 1940 Act. We provide a summary of the factors impacting our operating results in our 2015 Form 10-K under “MD&A – Factors Impacting our Operating Results.”

Critical Accounting Policies and Use of Estimates

Our financial statements are prepared in accordance with U.S. GAAP, which requires the use of estimates and assumptions that involve the exercise of judgment and use of assumptions as to future uncertainties. Understanding our accounting policies and the extent to which we use management judgment and estimates in applying these policies is integral to understanding our financial statements. We provide a summary of our significant accounting policies under Note 2 in our 2015 Form 10-K and under Note 2 of this Form 10-Q.

We have identified the following accounting policies as critical because they require significant judgments and assumptions about highly complex and inherently uncertain matters and the use of reasonably different estimates and assumptions could have a material impact on our reported results of operations or financial condition. These critical accounting policies govern:

We evaluate our critical accounting estimates and judgments on an ongoing basis and update them, as necessary, based on changing conditions.

We provide additional information on our critical accounting policies and use of estimates under “MD&A—Critical Accounting Policies and Use of Estimates” in our 2015 Form 10-K.

Financial Condition and Results of Operation

Our Portfolio

As of March 31, 2016, our Portfolio was approximately $1.4 billion and included $387 million of energy efficiency investments, $955 million of renewable energy (wind and solar) transactions and $23 million of other sustainable infrastructure investments. Approximately 61% of our Portfolio consisted of fixed rate loans, financing receivables, direct financing leases or debt securities, approximately 5% consisted of floating rate debt, approximately 12% was real estate investments with long-term leases and approximately 22% represented minority ownership of wind projects in eleven wind projects. Our real estate investments consist of over 14,000 acres of land leased under long-term lease agreements with over 25 solar projects.

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Excluding our equity investments, approximately 41% of our Portfolio consisted of U.S. federal government or state or local government obligors, approximately 57% consisted of investment grade commercial obligations and 2% consisted of non-investment grade rated commercial obligations, in all cases rated either by an independent third party rating service or our internal credit rating system. Our Portfolio, as of March 31, 2016, consists of approximately 110 transactions of greater than $1 million with a weighted average remaining life (excluding match-funded transactions) of approximately eleven years. For further information on our Portfolio, see Notes 1 and 6 to our financial statements of this Form 10-Q.

The table below provides details on the interest rate and maturity of our financing receivables and investments as of March 31, 2016:

The table below presents, for each major category of our Portfolio and the related interest-bearing liabilities, the average outstanding balances, investment income earned, the interest expense incurred, and average yield or cost. Our earnings from our equity method investments are not included in Total Revenue and thus we have excluded our equity method investments and the related earnings and interest expenses from these calculations. Our net investment margin represents the difference between the interest, investment and rental income generated by our Portfolio and the interest expense, divided by our Portfolio balance.

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The following table provides a summary of our anticipated principal repayments for our financing receivables and investments as of March 31, 2016:

See Note 6 to our financial statements in this Form 10-Q:

For information on our residual assets relating to our securitization trusts, see Note 5 to our financial statements in this Form 10-Q. The residual assets do not have a contractual maturity date and the underlying securitized assets have contractual maturity dates ranging from 2016 to 2038.

As previously discussed in our 2015 Form 10-K, along with other regulatory filings, we held a $13 million senior secured debt investment, along with a large financial institution who held the remaining approximately $45 million in outstanding debt securities, in an operating wind project that was being foreclosed upon and expected to be sold. The foreclosure and sale was completed in 2016 and we recovered the full value of our debt investment and recognized a gain of $0.8 million.

We had no financing receivables, investments or leases on nonaccrual status as of March 31, 2016 or December 31, 2015. We evaluate any modifications to our financing receivables in accordance with the guidance in ASC 310, Receivables. We evaluate modifications of financing receivables to determine if the modification is more than minor, whereby any related fees, such as prepayment fees, would be recognized as income at the time of the modification. We did not have any loan modifications that qualify as trouble debt restructurings for the three months ended March 31, 2016 or 2015.

Results of Operations

Comparison of the Three Months Ended March 31, 2016 vs. Three Months Ended March 31, 2015