Impact investing for a low carbon future.



Bruce Usher is a Professor of Practice at Columbia Business School in New York City. Professor Usher teaches MBA students on the intersection of finance, social and environmental issues, and is the Elizabeth B. Strickler ’86 and Mark T. Gallogly ’86 Faculty Director of the Tamer Center for Social Enterprise, and Chairman of the Investment Board of the Tamer Fund for Social Ventures. He is also a faculty member of Columbia University’s Earth Institute. Professor Usher’s teaching and academic activities focus on the challenge of mitigating climate change.


UsherWorks represents the ‘practice’ side of Professor Usher’s climate change mitigation work. UsherWorks is an investment portfolio of early stage clean energy, energy efficiency, and resource use enterprises. Professor Usher co-invests alongside institutional investors, and occasionally engages as an advisor or director with portfolio companies. 


Prior to his work at Columbia Business School, Professor Usher was CEO of EcoSecurities Group plc, the world’s leading developer of greenhouse gas emission reduction projects in developing countries. EcoSecurities developed 400 projects in 36 countries, representing approximately 10% of all projects approved by the United Nations under the Kyoto Protocol. EcoSecurities was acquired by JP Morgan in December 2009.

About the Book:

There’s a lot of talk about renewable energy these days. But few really understand it—the basic science, the limits, and the great promise it holds. Read Bruce Usher’s Renewable Energy: A Primer for the Twenty-First Century to better understand the great technological and economic revolution of this century — Michael Mann, Distinguished Professor of Atmospheric Science at Penn State University

Columbia University Press link

Amazon link



For information on UsherWorks:

Note that investments are only considered alongside an institutional investor.   


For information on the Tamer Center for Social Enterprise at Columbia Business School:


Mailing Address:

Columbia Business School
Uris Hall 316A
3022 Broadway
New York, NY 10027-6902