Ali Hasanbeigi, Ph.D.

Founder, CEO, and Research Director

San Francisco, California

Ali Hasanbeigi is the Founder, CEO, and Research Director at Global Efficiency Intelligence, LLC. He leads consulting and market research activities across our service areas. Dr. Hasanbeigi has 14 years of international experience providing strategic analysis and technical research on energy systems efficiency, demand side management, smart manufacturing, emerging technologies, and technology and policy evaluation. He has worked with clients and various stakeholders including government, industry, nonprofit, academia, and utilities in the U.S. and internationally.

Before founding Global Efficiency Intelligence, LLC., Dr. Hasanbeigi was a Research Scientist in the Energy Analysis and Environmental Impacts Division at Lawrence Berkeley National Laboratory, where he led the Low Emissions and Efficient Industry research group. During this time, he worked with various public and private organizations such as the U.S. Department of Energy, U.S. Environmental Protection Agency, World Bank, United Nations Industrial Development Organization, California Energy Commission, California Air Resources Board, Energy Foundation China, ClimateWorks Foundation, Hewlett Foundation, Oak Foundation, etc.

Dr. Hasanbeigi has extensive knowledge on technical, market, and economic analysis of energy systems efficiency in industry, particularly in the cement, iron and steel, pulp and paper, chemical and petroleum refining, textile, food and beverage, glass, aluminum, and high tech industries. He also has completed substantial research and consulting on cross-cutting energy systems such as motor systems, boiler and steam systems, cooling systems, and HVAC systems in the manufacturing and commercial sectors. In addition, he has deep expertise on integrated energy modeling, technology market evaluation and forecast, industry and technology roadmapping, energy-water nexus, quantification of air pollution reduction and health benefits of energy efficiency, emission control technologies, energy analysis tools development, international cooperation and strategic partnership. Dr. Hasanbeigi has also worked as an international energy efficiency consultant for the World Bank and UNIDO.

Dr. Hasanbeigi has a total of over 100 publications,  including 30 peer-reviewed international journal articles, 28 refereed international conference papers, and over 35 peer-reviewed reports. He also served as a contributing author for Industry Chapter of the Intergovernmental Panel on Climate Change (IPCC)’s Fifth Assessment Report on Mitigation of Climate Change. He received his bachelor’s and master’s degrees in textile technology engineering and his Ph.D. in energy technology. He was also a postdoctoral fellow on industrial energy efficiency at Lawrence Berkeley National Laboratory.

Dr. Hasanbeigi's selected publications can be found in our Publication page.

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Charlie Fitzgerald

Senior Consultant

San Francisco Bay Area, California

Charlie is a project finance specialist with over 10 years experience in U.S. and Asia covering both clean energy and real estate, during which time he has advised on or helped close over $1Billion in transaction value. Most recently, Charlie co-founded Verdera Partners in Oakland, CA. He served as the director of finance to help large property portfolio owners, clean energy investors, and others make intelligent, low-risk investments in clean energy as part of a larger infrastructure and/or real estate strategy.

Prior to GEI and Verdera, Charlie was at Allana Buick & Bers, an engineering firm based in Palo Alto, CA, advising large income property owners on maximizing energy savings opportunities across their portfolios.  Before that he worked on the project finance team at Borrego Solar based in Oakland, CA during a significant growth phase for the company, helping finance and build distributed and utility scale solar in the U.S.  Earlier Charlie worked for a Dutch development company focusing to finance waste-to-energy projects in Southeast Asia through a combination of private and DFI capital sources.  He began his career in the transaction advisory team of Reznick Group in Washington D.C. supporting clients on real estate and solar tax equity transactions. He has a Masters in urban planning with a real estate development and finance concentration from University of North Carolina Chapel Hill.

Cecilia Springer


Boston, Massachusetts

Cecilia's research focuses on economic analysis of energy policies, combining general equilibrium models, econometrics, and qualitative methods. Her geographies of interest are U.S., China and Southeast Asia, where she has worked and traveled extensively. Recent research topics include embodied carbon in international trade, decarbonization roadmap of California’s cement industry, China's national emissions trading system and industrial energy efficiency in China and Vietnam.

In addition to being a consultant at GEI, Cecilia is a Postdoctoral Fellow at Harvard Kennedy School's Belfer Center for Science and International Affairs. She is also a research affiliate at the Lawrence Berkeley National Laboratory's China Energy Group where she works on industrial energy efficiency assessment. Previously, she was a senior associate at Cli­mate Advis­ers, a climate pol­icy consulting firm in Washington, DC. She also studied eco-cities and green urban development as a Fulbright fellow in Tianjin, China. Cecilia received her Ph.D. at UC Berkeley's Energy and Resources Group and her B.Sc. in envi­ron­men­tal sci­ence from Brown Uni­ver­sity.

Pin Chobthiangtham


San Francisco Bay Area, California

Pin is an expert in energy technologies, including energy efficiency, waste-to-energy, biomass, and biogas technologies. Prior to being a consultant at GEI, Pin worked for Cenergy Solutions, an ANG technology storage applications start-up in Fremont, CA, responsible for providing research support for the development of multi-application biogas and natural gas storage technology. Before Cenergy Solutions, Pin was a university researcher and undergraduate lecturer in energy technology and environmental engineering at the Civil and Environmental Engineering Department of Srinakharinwirot University in Bangkok, Thailand.  While there she gained over 10 years of experience conducting and supporting technology and engineering research covering energy technologies, waste management, waste utilization, waste-to-energy, and materials development for both government and private sector.  

Pin is also an expert in the use of computational fluid dynamics software. She is also currently pursuing selected projects applying the latest big data analytics methods and programming to her research interests. She received her Bachelor’s and Master’s degrees in environmental engineering, and another Master’s degree in energy technology.