Gregory Kats is a managing director of the investment firm Good Energies. He was formerly a managing principal of Capital E, a national clean energy technology consulting firm. Previously he was Director of Financing for Energy Efficiency and Renewable Energy at the U.S. Department of Energy. He is a member of the LEED Steering Committee and serves as Chair of the Energy and Atmosphere Technical Advisory Group for LEED. In 2003 he wrote the first in-depth study of the long-term economic benefits of green buildings, The Costs and Financial Benefits of Green Buildings.