| Item | Obligations |
|---|---|
| Department of Veterans Affairs | $228M |
| Department of Defense | $68.4M |
| Department of the Interior | $6.2M |
| National Archives and Records Administration | $4.5M |
| Department of Justice | $1.2M |
| General Services Administration | $592K |
Department of Veterans Affairs is Ameresco's largest federal customer, with $228M obligated (73.8% of the company's federal obligations).