To learn more about our work in energy efficiency, please contact John Christmas.


Since the mid-90’s, Hannon Armstrong has been one of the most active investors in energy efficiency. We understand the challenges of aggregating and financing small-scale energy efficiency projects into large transactions that can make a significant environmental and financial impact.

We provide energy users, ESCOs and equipment suppliers critical financing for accelerating energy efficiency in markets where financing is a key enabler.

Building on our success in the Federal and State and Local markets, Hannon Armstrong is expanding into the Commercial market through active participation in the Clinton Climate Initiative.