Barney Rush

Barney Rush is currently a Managing Director with Hamilton Clark Sustainable Capital, a
FINRA-member investment bank that assists energy and green technology companies with
capital raising and M & A services. He is also on the Advisory Board of Commonweal Ventures,
a venture capital firm that invests in early-stage technology companies engaged in
sustainability and decarbonization.

Mr. Rush retired in September 2022 from the Board of directors of ISO – New England, a
position he held for nine years. The ISO – New England is the electric grid authority that
operates the wholesale power markets and ensures reliability for the six -state region of New
England. He was Chair of the Markets Committee and served on the Nominating and
Governance Committee. He previously served on the Audit and Finance and Compensation and
HR Committees and was chair of the Joint Nominating Committee.

From 2019 until his retirement in September of 2021, Mr. Rush was also Chair of the Board of
Directors of Azure Power Global, a major developer of utility scale solar plants in India. He
chaired the Nom & Gov and Compensation Committees for Azure and served on the Capital
Committee. He had been the lead director of Azure from 2017 – 2019, having joined the board
in 2016. In addition, has been a Senior Representative for Fieldstone, an advisory firm focused
on raising capital for infrastructure in Africa and other emerging markets.
Mr. Rush was an Operating Partner at Denham Capital Management from 2010 through 2013.
While with Denham, Mr. Rush served on the boards and worked closely with management of
five portfolio companies, including ones engaged in geothermal development, tantalum
processing, and fertilizer manufacturing.

From 2003 to 2009, Mr. Rush was CEO of H2Gen Innovations, Inc., a venture capital backed
start up that developed, manufactured, and sold skid mounted hydrogen generation plants.
Previously, Mr. Rush was Group Chief Executive Officer, Europe, for Mirant Corporation. While
at Mirant, he was Chair of the Supervisory Board of Bewag, the electric utility serving Berlin,
Germany, and was Chairman of the Board of WPD, the regional distribution company serving
southwest England and southern Wales.

Earlier, Mr. Rush was Executive Vice President of Oxbow Corporation, where he was
responsible for developing and financing co-generation and geothermal power plants; and was
Senior Vice President of Lehman Brothers, where he arranged non-recourse financing for
hydro and co-generation power plants. When Mr. Rush first joined Lehman Brothers, he
advised emerging market countries on debt restructuring. Prior positions included serving as a
special assistant to the Undersecretary of State for Economic Affairs in the US Department of
State and as a research assistant at the World Bank.

Mr. Rush is the Vice Mayor of the Town of Chevy Chase, MD. He served as mayor of the Town
for four years and has been on the Town Council since 2016.
He holds a master’s degree from the Princeton School of Public and International Affairs
(previously called the Woodrow Wilson School) and a bachelor’s degree, Magna Cum Laude,
from Harvard College.