Technical Advisory Council

The Technical Advisory Council (TAC) supports ESA's research portfolio. The real-world experiences and expertise of the TAC members inform ESA’s research agenda as they review research products and support educational programing. TAC members participate in regular planning meetings as well as ad-hoc discussions and reviews of ESA research efforts. 

The TAC is currently comprised of representatives from two industry consulting firms:


Ryan Hledik, The Brattle Group

Ryan Hledik is a Principal with The Brattle Group. He specializes in regulatory and planning matters related to the emergence of distributed energy technologies. 

Mr. Hledik has consulted for more than 50 clients across 30 states and eight countries. He has supported utilities, policymakers, law firms, technology firms, research organizations, consumer groups, and wholesale market operators in matters related to energy storage, energy efficiency, demand response, distributed generation, electrification, retail tariff design, and grid modernization.

Mr. Hledik recently directed a study on the potential for energy storage in Nevada, which resulted in the establishment of a statewide energy storage procurement target. He is a recognized voice in debates on how to price electricity for customers with distributed generation, including authoring a report on the topic for the U.S. Department of Energy’s high-profile “Future of Electric Utility Regulation” initiative. He also co-authored Saudi Arabia’s first Demand Side Management (DSM) plan, and the Federal Energy Regulatory Commission’s pathbreaking study, A National Assessment of Demand Response Potential.

Mr. Hledik has published more than 25 articles on emerging electricity issues and has presented at industry events throughout the United States as well as in Brazil, Belgium, Canada, Germany, Poland, South Korea, Saudi Arabia, the United Kingdom, and Vietnam. His research on the “grid edge” has been cited in The New York Times and The Washington Post, and in trade press such as GreenTech Media, Utility Dive, and Vox

Mr. Hledik received his M.S. in Management Science and Engineering from Stanford University, where he concentrated in Energy Economics and Policy. He received his B.S. in Applied Science from the University of Pennsylvania, with minors in Economics and Mathematics. Prior to joining Brattle, Mr. Hledik was a research assistant with Stanford’s Energy Modeling Forum and a research analyst with Charles River Associates.

Roger Lueken, The Brattle Group

Roger Lueken is an Associate with The Brattle Group. He specializes in the economics of energy storage and wholesale market design.

Dr. Lueken has worked with clients throughout the U.S. and internationally, including market operators, investors, regulated utilities, and other market participants. Energy storage assignments include using Brattle’s bSTORE model to perform benefit-cost analyses of distributed and utility-scale storage in California, PJM, ERCOT, and the Midcontinent ISO (MISO). Dr. Lueken has provided due diligence support on behalf of investors and technology firms evaluating specific storage and solar+storage projects. He served as the project manager for a study to identify the economic potential for energy storage in Nevada.

Dr. Lueken holds a Ph.D. in Engineering and Public Policy from Carnegie Mellon University, an M.A. in Engineering and Public Policy from the University of Maryland, M.A. and a B.A. in Mechanical Engineering from Purdue University.

Michael Leifman, Tenley Consulting

Michael Leifman is a strategist, analyst and thought leader based in Washington, DC. Michael is the founder of Tenley Consulting, a firm offering advisory and strategic planning services to corporations, start-ups, multilateral banks, foundations and NGOs on wide landscape of complex issues, including energy & environmental policy and economics, forecasting, “future of work,” technology innovation and business innovation. Before founding Tenley, Michael was the Senior Strategist for GE’s Business Innovations group, where he focused on the power business, artificial intelligence and the future of work, startup businesses within GE, and the economies of China and India. He was previously the Principal Strategist for GE Power, where he was responsible for injecting strategic thinking across the business, raising new ideas, opportunities and risks to senior leadership, and forcing attention on the non-obvious. In both strategy roles, Michael was an innovative communicator, podcasting and blogging across multiple (internal) channels. Michael joined GE in 2008, and for many years was the Director of Forecasting & Analytics for GE Power & Water, as well as the Director of the Modeling Center of Excellence for GE Energy. In this role, Michael developed a reputation not just for analytical rigor but also consensus building. Prior to GE, Michael worked for the US federal government, as the lead analyst in US DOE’s Office of Energy Efficiency and Renewable Energy, and as a climate policy and economics analyst at US EPA. Michael also worked for an environmental policy consulting firm, analyzing a diverse set of issues, from chicken waste to the Kyoto Protocol. In addition to his day job, Michael co-hosts a podcast on technology startups and the economy called “Macro Micro Michael Marco & Startups at the Edge” (M4Edge). He holds master’s degrees from Johns Hopkins and Carnegie Mellon, and a bachelor’s degree from The University of Chicago. He lives in Washington, DC with his wife and two sons. Find him on LinkedIn; Tenley Consulting; and M4Edge.