Exhibit 21.1
Subsidiaries
| Subsidiary | Jurisdiction | |
| Asset Acquisition II LLC | Maryland | |
| GL ECM Funding LLC | Maryland | |
| HA Howard Services LLC | Maryland | |
| HA WG Funding LLC | Maryland | |
| Hannie Mae EMI LLC | Virginia | |
| Hannie Mae Goco LLC | Maryland | |
| Hannie Mae II LLC | Maryland | |
| Hannie Mae III LLC | Maryland | |
| Hannie Mae IV LLC | Maryland | |
| Hannie Mae Leasing I LLC | Maryland | |
| Hannie Mae LLC | Virginia | |
| Hannie Mae Siemens LLC | Virginia | |
| Hannie Mae SRS Funding LLC | Maryland | |
| Hannie Mae UESC LLC | Maryland | |
| Hannie Mae V LLC | Maryland | |
| Hannie Mae VI LLC | Maryland | |
| Hannon Armstrong (FB) Solar LLC | Maryland | |
| Hannon Armstrong BPA Funding LLC | Maryland | |
| Hannon Armstrong Capital, LLC | Maryland | |
| Hannon Armstrong DSM Funding LLC | Maryland | |
| Hannon Armstrong DSM II Funding LLC | Maryland | |
| Hannon Armstrong Environmental Equipment And Services LLC | Maryland | |
| Hannon Armstrong GPC Funding LLC | Maryland | |
| Hannon Armstrong GPC II Funding LLC | Maryland | |
| Hannon Armstrong Gulf Power Funding LLC | Virginia | |
| Hannon Armstrong Information Technology And Telecommunications II LLC | Maryland | |
| Hannon Armstrong Information Technology And Telecommunications LLC | Maryland | |
| Hannon Armstrong KCS Funding LLC | Maryland | |
| Hannon Armstrong NG Funding LLC | Maryland | |
| Hannon Armstrong NJ Funding LLC | Maryland | |
| Hannon Armstrong Oklahoma Funding LLC | Virginia | |
| Hannon Armstrong PEPCO Funding LLC | Virginia | |
| Hannon Armstrong PR Solar LLC | Maryland | |
| Hannon Armstrong Securities, LLC | Maryland | |
| Hannon Armstrong Space Centre Funding LLC | Maryland | |
| Hannon Armstrong Sustainable Infrastructure, L.P. | Delaware | |
| Hannon Armstrong Telecommunications And Security LLC | Maryland | |
| Hannon Armstrong UESC Funding LLC | Maryland | |
| Hannon Armstrong UESC II Funding LLC | Maryland | |