Hannon Armstrong Sustainable Infrastructure Capital, Inc. provides debt and equity financing focusing on energy efficiency, clean energy, and infrastructure projects. The company provides financing services for solar, wind, geothermal, biomass, natural gas, water, communications infrastructure, and energy efficiency projects. Additionally, it offers mergers and acquisitions, tax equity advisory, corporate finance, and merchant banking services. Hannon Armstrong Sustainable Infrastructure Capital caters to U.S. federal, state and local governments, and high credit quality institutions and utilities. The company was founded in 2000 and is based in Annapolis, Maryland.