Our Board

Dr. Holmes Hummel

holmeshummelClean Energy Works was founded by Dr. Holmes Hummel to accelerate investments in the clean energy economy with inclusive financing. As the champion for the Pay As You Save® (PAYS®) system, Dr. Hummel led Clean Energy Works to win the FiRe Award for high-impact innovation at the Bloomberg New Energy Finance “Future of Energy Summit.” Dr. Hummel also serves on the board of Cornerstone Capital as well as Cleantech Open. Previously, Dr. Hummel served as the Senior Policy Advisor in the Department of Energy’s Office of Policy & International Affairs from 2009-2013. In addition to prior work with energy innovators in the Silicon Valley, Dr. Hummel earned a doctorate degree from Stanford University for interdisciplinary research on energy technology scenarios that achieve 100% clean energy for all.

Vien Truong

vientruongVien Truong was appointed in July 2015 as the National Director of Green For All, having been an early architect of the organization’s state policy and workforce efforts. Vien returns to Green For All after serving as the environmental equity director of the Greenlining Institute, a public policy group that works to empower disadvantaged groups. Vien has received congressional, state, regional and local awards for her work on behalf of low-income communities and communities of color. Those include the San Francisco Chronicle’s “Top Women Leaders”, Urban Habitat’s “Movement Builder” and Oxfam America’s “Act Local, Think Global” Awards. Vien served on the City of Oakland’s Planning Commission, helping guide the development of her hometown. Her experience includes working with California Senator Joe Simitian and clerking with Chief Magistrate Larson at the San Francisco Federal District Court She has a B.A. from the University of California, Berkeley and a J.D. from the University of California Hastings College of the Law.

Trenton Allen

trentonallenTrenton Allen, Managing Director and CEO of Sustainable Capital Advisors, is an experienced energy and banking professional with nearly 20 years and $18 billion in transaction experience. Mr. Allen has financed a wide range of infrastructure projects including, water, wastewater, energy efficiency, fossil and renewable energy for utility, business and governmental clients. Mr. Allen is a frequent speaker at major energy conferences and is widely regarded as a thought leader in the financing of clean energy projects. Mr. Allen is passionate about energy security and creating solutions that provide energy access to underserved communities around the world.

Ken Alston

Mr. Alston is Investment Manager at the California Clean Energy Fund, which since 2004 has invested in leading clean energy and transportation sector startups. His work includes the $24 million CalSEED startup fund and developing international partnerships. Prior to joining the California Clean Energy Fund, Mr. Alston worked at the White House and U.S. Department of Energy. At DOE, he was Special Advisor to the U.S. Secretary of Energy. Mr. Alston co-founded the Department of Energy’s Clean Energy Investment Center, chaired the Department’s Energy Finance Working Group, led the Department’s efforts to secure $4 billion in commitments for the White House Clean Energy Investment Initiative, and was an advisor on Power Africa. Mr. Alston’s past experience includes investment firms Penta Group and Investor’s Circle, technology startup Simbol Materials, and strategy consultancy Booz Allen Hamilton. He holds an MBA from the Stanford Graduate School of Business, and an MS in Environment and Resources from the Stanford School of Earth, Energy, and Environmental Sciences, where he was a Chevron Fellow.