Mr. Pfeifenberger is an economist with a background in electrical engineering and over 25 years of experience in the areas of electricity markets, regulation, and finance.

Mr. Pfeifenberger specializes in:

  • Electricity market design and energy policies
  • Transmission planning and benefit-cost analyses
  • Storage, renewable resource, and generation asset valuation
  • Ratemaking and incentive regulation
  • Strategy and planning
  • Contract disputes and commercial damage

On behalf of his clients, Mr. Pfeifenberger has submitted expert testimony to the US Congress, courts, arbitration panels, and regulatory agencies in the US and Canada. He also provides support in mediation, arbitration, settlement, and stakeholder processes. He helps clients explore the benefits of improved power market designs and grid investments, the integration of renewable generation and storage resources, and the impact of regulatory and legislative actions in the context of evolving market conditions.

Mr. Pfeifenberger is a Visiting Scholar at MIT’s Center for Energy and Environmental Policy Research (CEEPR), a former Senior Fellow at Boston University’s Institute of Sustainable Energy (BU-ISE), and an IEEE Senior Member. He frequently serves as an advisor to research initiatives by the Energy Systems Integration Group (ESIG) and the US Department of Energy’s National Labs. Before joining Brattle, he was a Consultant for Cambridge Energy Research Associates and a Research Analyst at the Institute of Energy Economics at the University of Technology in Vienna, Austria.


Brandeis University
MA in Economics and Finance

University of Technology, Vienna, Austria
MS (Diplom Ingenieur) in Electrical Engineering and Energy Economics

Sophia University, Tokyo, Japan
Program of International Business


Mr. Pfeifenberger has testified in numerous regulatory, litigation, and arbitration proceedings, including before the US Federal Energy Regulatory Commission and various US state and Canadian regulatory commissions. For a list of testimony, please email