Our staff are available for media interviews and panel participation on topics related to clean energy finance, technology and policy. Contact information and staff bios are available below. For general inquiries, please contact firstname.lastname@example.org.
Lewis Milford President of Clean Energy Group, Founder of Clean Energy States Alliance
Lewis Milford is president and founder of Clean Energy Group (CEG) and Clean Energy States Alliance (CESA), two national nonprofit organizations that work with state, federal, and international organizations to promote clean energy technology, policy, finance, and innovation. He is also a nonresident senior fellow at the Brookings Institution. He works with many public agencies and private investors in the United States and Europe that finance clean energy. He is frequently asked to appear as an expert panelist at energy conferences throughout the United States and Europe. His articles on clean energy have appeared in many print and online publications including The New York Times, The Boston Globe, The National Journal, The Huffington Post, and Renewable Energy World. Before founding these two organizations, he was Vice President of Conservation Law Foundation, New England’s leading environmental organization. Prior to that, he was a government prosecutor on the Love Canal hazardous waste case in New York and previously directed the Public Interest Law Clinic at American University Law School where he represented veterans on a range of legal issues, including gaining compensation for their harmful expose to Agent Orange and nuclear radiation. He has a J.D. from Georgetown University Law Center.
Maria Blais Costello Manager of Program Administration
Maria Blais Costello is Manager of Program Administration for CEG and CESA. Over the past 15 years, she has managed the development and outreach activities for both organizations. Maria coordinates internal communications, program deliverables and timelines, and assists with strategic planning. She is responsible for managing grants and contracts for CESA and CEG projects; she manages grant writing and reporting, communications, publications, and special events. Maria previously worked at Conservation Law Foundation, where she served as the office manager for the Vermont office. She graduated cum laude from the University of New Hampshire with a B.A. in Political Science, with a minor in Economics.
Diana Chace is a Program Associate for CESA, focusing primarily on solar power. Diana graduated summa cum laude from Vermont Law School (VLS) with a Master of Energy Regulation and Law. Before attending VLS, she helped the Conservation Law Foundation advocate in the Vermont State House for renewable portfolio standards and for increased funding for thermal efficiency programs. She also served on the Finance and Funding subcommittee of the Vermont Public Service Department’s Thermal Efficiency Taskforce, and on Drive Electric Vermont, a stakeholder group promoting and facilitating the adoption of electric vehicles.
Samantha Donalds Research and Communications Specialist
Samantha serves as a Research and Communications Specialist for Clean Energy Group and Clean Energy States Alliance. She assists on communications and research. She also coordinates social media and serves as the webmaster for both organizations. Samantha previously worked as an administrator at Fairewinds Energy Education, a nuclear safety advocacy non-profit in Burlington, Vermont. She has also worked as a research assistant in the environmental studies department at Brown University, where she researched fisheries projects in West Africa and compiled historic climate and fisheries data from southern New England. Samantha graduated cum laude from Mount Holyoke College with a B.A. in Environmental Studies and a minor in French.
Nate Hausman is a Project Director for CEG and CESA where he primarily works on solar policy issues. Nate is an attorney licensed to practice in both California and Vermont. He previously served as an associate attorney for the Austin Legal Group and as a visiting attorney for the Environmental Law Institute. Nate holds a J.D. with a certificate in Environmental & Natural Resources Law from Lewis & Clark Law School and a B.A. from Colorado College.
Warren Leon Executive Director – Clean Energy States Alliance
Warren Leon was appointed Executive Director of Clean Energy States Alliance (CESA), which is managed by Clean Energy Group, in June 2013, after serving CESA in several other capacities in recent years, including as Deputy Director of the CESA organization. He oversees the organization’s day-to-day operations and leads strategy development. He directs CESA’s RPS Collaborative and is staff lead on PV. Prior to working for CESA, Warren was Director of the Massachusetts Renewable Energy Trust, Executive Director of the Northeast Sustainable Energy Association, and Deputy Director for Programs at the Union of Concerned Scientists. He co-authored the influential book The Consumer’s Guide to Effective Environmental Choices. He holds a Ph.D. from Harvard University.
Meghan Monahan is CEG’s Executive Assistant and Office Manager. She also serves as a project assistant for CESA. Her duties include managing staff schedules, administrative support, research, and event planning. Meghan is a magna cum laude graduate of Champlain College, where she majored in Business Administration.
Seth Mullendore is vice president and project director for Clean Energy Group, where he serves as manager, analyst, and technical adviser for power systems, solar PV applications, and battery storage projects. Seth works with policymakers and project developers on outreach and coordination of energy storage project development, and he provides research and reporting of energy storage technologies, policies, and supporting market structures. Prior to joining Clean Energy Group, Seth served as a Sustainable Energy Fellow with Union of Concerned Scientists and worked with Maine Clean Communities to help advance clean transportation initiatives in Maine. He has participated in a number of academic research projects directly related to renewable energy, energy storage, and energy equity. Seth holds a M.S. in Civil & Environmental Engineering from Stanford University, and a B.S. in Geosciences from the University of Southern Maine.
As project director for Clean Energy Group and Clean Energy States Alliance (CESA), Todd Olinsky-Paul directs the Energy Storage and Technology Advancement Partnership (ESTAP) project, a federal-state funding and information sharing project that aims to accelerate the deployment of electrical energy storage technologies in the United States. Todd also works on resilient power in the areas of solar+storage, fuel cells and combined-heat-and-power (CHP) for critical infrastructure energy resiliency. His recent work has focused on electrical energy storage technologies and policy, renewable thermal generation and siting issues, wind energy siting issues, renewable energy and grid interactions, financing and policy incentives, and emerging technologies. He has authored numerous reports for state and federal agencies. Todd joined CESA from the Pace Energy and Climate Center, where he served as the Manager of Communications, Education, and Outreach, as well as an Energy Policy Analyst. Todd has a M.S. in Environmental Policy from Bard College and a B.A. from Brown University.
Janice Ouelette Bookkeeper and Human Resources Assistant
Janice Ouellette is bookkeeper for CEG and CESA, where her duties include accounts receivable and payable, payroll and benefits, and cash management and reconciliations. She has several years of work experience in governmental accounting, retiring as a school Business Manager in 2014. Janice has a B.S. in Accounting from the University of Maine at Orono.
As Senior Finance Director for Clean Energy Group, Rob provides analysis and designs and promotes finance strategies to engage multifamily affordable housing developers, municipalities and other project developers in community resilient power. With over twenty-five years of experience in community development and energy-related commercial finance, Rob Sanders has deep expertise in designing, implementing and evaluating financing programs, financial products and related services in the areas of clean energy and sustainable community development. Rob was formerly the Managing Director of Energy Finance for The Reinvestment Fund, serving as Fund Manager for the Sustainable Development Fund, a $32 million fund created by the Pennsylvania PUC to promote renewable energy and energy efficiency, as well as TRF Fund Manager for the Pennsylvania Green Energy Loan Fund and the Philadelphia metropolitan area EnergyWorks Loan Fund. As lead for all energy investing, he made loans, leases, equity investments and performance-based grant incentives. Rob holds an MCP from the University of California at Berkeley and a B.A. from Stanford University.
Val Stori serves as a Project Director for CESA and CEG. Val leads CESA’s Renewable Thermal and Biomass Thermal projects and the Interstate Turbine Advisory Council. Additionally, she co-leads several offshore wind initiatives including the Northeast Wind Resource Center, with a focus on stakeholder outreach. She has a Master of Studies in Environmental Law from Vermont Law School and a B.A. from Middlebury College in Environmental Studies/Conservation Biology.
Tony Vargo serves as CFO for CEG and CESA, where his primary responsibilities include strategic planning, organization and project budgeting, financial accounting and grant reporting, audit management, risk management and contract management. In addition, he works with staff in human resource management and benefits design/administration. Previously, he served as a VP/CFO/Treasurer with the National Gardening Association. He is a CPA CGMA with 25 years of experience in financial management.