Our Team


Andreas Karelas
Executive Director

Andreas is a dedicated renewable energy advocate with over ten years of environmental and renewable energy nonprofit experience. Andreas incorporated RE-volv as a nonprofit organization in February 2011. Prior to founding RE-volv Andreas worked with a number of leading organizations including the American Council on Renewable Energy (ACORE), the National Audubon Society, blueEnergy, and the Center for Resource Solutions. Andreas holds Master’s degrees in International Affairs and in Natural Resources and Sustainable Development, and a Bachelor’s degree in Economics. He is a 2013 Audubon Toyota TogetherGreen Conservation Leadership Fellow. He also serves on the Steering Committee of the Local Clean Energy Alliance. Contact Andreas at andreas [at] re-volv [dot] org.

Polly Baranco

Polly Baranco
Solar Finance Director

Polly has over ten years experience in high tech, with four of those years being in the cleantech industry, and she is currently a Senior Analyst at S-Power. With experience at Southern California Edison and both solar integrators and solar manufacturers, Polly now leads RE-volv’s financial arm helping communities realize their renewable energy goals. Polly has created financial models that look at European and multiple US state markets, and is utilizing that experience to help RE-volv provide services to underserved communities while also being sustainable. Polly holds an MBA with a concentration on Finance and Strategy, and a Master’s in Arts Management.

Sarah Brinker 
Associate Director of Partnerships & Philanthropy

Sarah is committed to protecting the environment by offering clean energy solutions to all. Prior to joining RE-volv, Sarah was a major gifts officer at the Sierra Club, the nation's most prominent environmental organization. At the Sierra Club, Sarah supported national campaigns to get the country on the road to 100% clean energy. In addition to raising gifts from individuals and institutions, Sarah also managed the national fundraising efforts specifically for the Environmental Law Program, one of the Club's most vital activist tools. She attended the University of California, Davis where she led efforts to divert waste at the nation's first zero waste stadium. Sarah was elected to the Sierra Club San Francisco Bay Chapter Executive Committee and will serve from 2016-2018In her free time, Sarah enjoys running marathons, hiking, playing soccer, and traveling. Contact Sarah at sarah [at] re-volv [dot] org.

Gavriella Keyles
Communications & Program Manager

Gavi runs RE-volv's Solar Ambassador Program and manages RE-volv's solar projects located outside the Bay Area. She became interested in sustainability and climate change while studying abroad in the Middle East in 2012. Prior to joining the RE-volv team, Gavi worked with the Farm Journal Foundation in Washington, D.C. and Spark Ventures in Chicago. She recently completed New Sector Alliance’s Residency in Social Enterprise fellowship, an 11-month nonprofit management training program that engages and cultivates talent for the social sector. Gavi holds a Bachelor's degree from Northwestern University's School of Communication. Contact Gavi at gavi [at] re-volv [dot] org.

Board of Directors

Megan Crocker
Co-founder, Bright Circle Ventures

Megan is passionate about supporting the critical intersection of clean energy and finance, and is currently launching a solar venture capital fund, Bright Circle Ventures. She earned her MBA in Sustainable Management from Presidio Graduate School in 2014. Prior to business school, Megan worked for ten years for Symphony Asset Management, a $10B institutional hedge fund company, where her focus was on client service, marketing, management and coordination of both internal and external communications. Megan is a Chartered Alternative Investment Analyst (CAIA, 2007) and received a BS in Veterinary Science (1998) from the University of Arizona, Tucson. 

Prasanna Krishnan 
President, PRO Battery Technology

Pras is passionate about the power of entrepreneurship to build sustainable, healthy communities, which made his decision to join RE-volv an easy one. His depth is in solar photovoltaics, having served in engineering and leadership positions at leading solar firms such as OptiSolar, Belectric and SunEdison. In addition to working in the social entrepreneurship sector, he is currently with an early-stage startup developing environmentally friendly, low-cost batteries for stationary storage applications. He holds degrees in electrical and solar engineering and is very excited about helping support RE-volv’s growth over the coming years.

Jennifer Martin

Jennifer Martin
Executive Director, Center for Resource Solutions

Jennifer has over twenty years of experience in renewable energy, energy efficiency and distributed generation policy, markets and technology development, as well as electricity sector and climate change policy and regulation. Jennifer is responsible for the overall management of the Green-e Energy and Green-e Climate certification programs, and provides strategic program guidance to all CRS programs and new initiatives. Jennifer is a long-standing leader in the renewable energy community.

Sean Miller

Sean Miller
Co-Director, The Green Schools Group

Sean has worked to bring the issues of environmental education and green schools to a national level of importance and implementation. He has played a key role in organizing the successful creation of the D.C. Healthy Schools Act and also the U.S. Department of Education’s new Green Ribbon Schools program. He has written a plentitude of environmental curriculum with such entities as PBS and the U.S. Department of Energy. Sean has also pioneered a program at Earth Day Network that fostered solar installations on schools and incorporated renewable energy education into the classroom. Currently, he is pursuing his doctorate in sustainability education at Georgetown University and teaching about such subjects at American University.


Robert J. Nelson
Partner, Lieff Cabraser Heimann & Bernstein, LLP

Robert J. Nelson is a partner at Lieff Cabraser Law Firm. He has played a leading role in the firm's False Claims Act (whistleblower law), automotive, aviation, defective products, mass torts, tobacco, and consumer fraud cases, taking on many of the world's largest corporations and holding them accountable. He has served as court-appointed Lead or Co-Lead Counsel in numerous state and federal coordinated proceedings, as well as in more than 30 class actions.

Kassie Rohrbach
Senior Energy Campaigner, Greenpeace

Kassie Rohrbach is a Senior Energy Campaigner at Greenpeace, leading up the 100% Renewables campaign in the U.S.  Previously, Kassie served as the Senior Campaigns Manager for National Wildlife Federation’s Climate and Energy Program. Kassie brings over a decade of experience with campaign organizing and coalition building, working to address the climate crisis. Prior to joining NWF in 2008, Kassie co-founded and served as the Co-Director of Energy Action Coalition (EAC), a youth led coalition of environmental and social justice organizations. Kassie also spent three years at the Center for Resource Solutions, working on the Green-e Renewable Energy Certification Program. In 2003, Kassie graduated from Connecticut College with a BA in Gender and Women’s Studies. She got her start organizing on climate and energy while at Connecticut College, where she led one of the first student campaigns to invest in renewable energy.

Paul Wapner

Dr. Paul Wapner
Director of Global Environmental Politics Program, American University

Paul is a thought leader on the environmental issues of today. He is a prolific writer having written such books as Living Through the End of Nature: The Future of American Environmentalism, and, Environmental Activism and World Civic Politics. Through his years of teaching he has developed a deep understanding of human behavior in relation to environmentalism, climate change, and civic engagement.

Clint Wilder 
Senior Editor, Clean Edge

Clint Wilder is senior editor at leading clean-tech research and advisory firm Clean Edge and has been writing and speaking about the clean-tech industry for more than a decade. He is co-author of two books, Clean Tech Nation: How the U.S. Can Lead in the New Global Economy (HarperCollins, 2012) and The Clean Tech Revolution (HarperCollins, 2007). Clint is a frequent speaker at clean-tech and green business events in the U.S. and overseas, a blogger for the Green section of The Huffington Post, and has been a facilitator in the Energy and Climate Change track of the Clinton Global Initiative. At Clean Edge, Clint is a lead author of many of the firm’s research reports including its flagship U.S. Clean Tech Leadership Index, a widely cited annual ranking of U.S. states and metro areas in leadership in clean-tech deployment, policy, and finance. He is also director of clean technology at Green Bear Group, a Silicon Valley-based green marketing services firm.  

A Californian for nearly 25 years, Clint lives in Sausalito and is a former member of the Sierra Club Marin Group executive committee. He has a B.A. in history from Yale University and did graduate work in business journalism at Boston University.

Note: Andreas Karelas, Executive Director and Polly Baranco, Solar Finance Director also serve on the Board of Directors.

Advisory Committee

Troy Arnold

Troy Arnold
Director of Development, Justice & Diversity Center

Troy is a long standing professional in the field of development. He has raised over $15 million dollars for a variety of nonprofits and has over a decade of fundraising experience. He has managed annual fund campaigns, major gifts, events, foundation and government grants, and board development. His development work has included many environmental and renewable energy focused organizations.

Galen Lemei
Advisor to the Commissioner, California Energy Commission

Galen has a long history of applying his legal expertise to issues of renewable energy. He has served as Advisor to California Energy Commissioner Douglas since August 2009, after a year of service as Energy Commission staff counsel. Prior to joining the Energy Commission, Galen was a legal consultant for the Center for Resource Solutions, an environmental nonprofit advocating for renewable energy, and practiced commercial litigation with the law firm of Gibson, Dunn & Crutcher, LLP.

Alyssa Newman

Alyssa Newman
Executive Director, Empowered by Light

Alyssa has eighteen years of experience working in the energy and environmental space. She is a global corporate social responsibility professional with diverse experience in the public and private sector. She's currently the Public Affairs Manager for Trina Solar (NYSE: TSL). Alyssa founded the SunPower Foundation where she managed $5M in global energy education programs and over 1MW in product donations in developed and developing markets. She's previously worked at PG&E, SunPower, SolarCity, The Nature Conservancy, and Sungevity.