Willis Geffert

Associate Director


Washington, DC
Tel: +1 202 466 9293
Fax: +1 202 466 3605

Email: willis.geffert@nera.com
vCard: Download


MS in physics, University of Pennsylvania
BA in physics, magna cum laude, Amherst College


Willis Geffert specializes in the energy industry, focusing on international arbitration, litigation support, and advisory services. He has provided in-depth analysis and advice as a consulting expert in 10 completed or ongoing international arbitrations, addressing issues such as contract reform, build-own-operate-transfer and build-operate-transfer concessions, multilateral and bilateral trade agreements, regulatory economics, expropriation, breach of contract, damages, asset valuation, and market definitions. He has supported clients before the International Centre for Settlement of Investment Disputes (ICSID), International Chamber of Commerce (ICC), Singapore International Arbitration Centre (SIAC), US courts, the Federal Energy Regulatory Commission (FERC), and various other arbitral fora and regulatory bodies. His experience includes:

  • In proceedings before the ICSID, analyzing separate electricity transmission disputes in Caravelí v. Peru and Aguaytía v. Peru, and, more recently, assessing a pulp and paper mill dispute in Mercer v. Canada;
  • In a FERC investigation, advising counsel to an electricity company and its traders on allegedly improper bidding in a US electricity market;
  • In a matter before US courts, on behalf of the plaintiff, quantifying damages resulting from an explosion at a large power plant (jury ultimately determined damages amounted to more than $450 million); and
  • Before a public utilities board, reviewing a utility’s proposed pass-through of its costs to refurbish a nuclear power plant.

Mr. Geffert’s advisory practice focuses on aiding governments and regulators in electricity market reforms, as well as providing market analysis, due diligence support, and strategic and regulatory advice to energy companies, utilities, and investors. He has extensive experience in global electricity markets, including PJM, NYISO, CAISO, ERCOT, Mexico, various Canadian markets, Ireland's SEM, Russia, Nord Pool, Pakistan, South Africa, Peru, and the Dominican Republic. Mr. Geffert has advised:

  • The Mexican Secretariat of Energy on electricity market and sector reforms, helping develop rules for the capacity market and financial transmission rights, reviewing short-term energy market rules, and advising on the horizontal separation of CFE, the state electricity company;
  • A US utility on a potential power purchase agreement for electricity from a wind farm; and
  • An investor on due diligence required for the purchase of a US transmission and distribution electric utility.

His other regulatory work includes evaluating retail power rates, analyzing compensation for ancillary services and for owning transmission lines and distribution networks, setting the demand curve for electricity capacity auctions, and analyzing market power. He also helps run NERA's Marginal Cost Working Group.

With regard to the natural gas market, Mr. Geffert has worked on economic and contract issues related to gas extraction and retail gas pricing, and he has assessed retail gas markets for potential investors.

Mr. Geffert received a master's degree in physics from the University of Pennsylvania. He graduated magna cum laude from Amherst College, with a BA with honors in physics. He has also studied at Oxford University's Worcester College.

Title Type Author
Could Mexico’s Capacity Market Design Lead to Gaming by Generators? Published Article Kurt G. Strunk and Willis Geffert
NERA Electricity Insights | Q1 2018 Report Scott J. Bloomberg
NERA Electricity Insights | Q4 2017 Report By Scott J. Bloomberg
NERA Electricity Insights | Q3 2017 Report By Scott J. Bloomberg
An Economic Assessment of Contracts in International Arbitration Published Article by Willis Geffert & Bastian Gottschling
Beyond net metering: A model for pricing services provided by and to distributed gene... Published Article By Kurt G. Strunk and Willis Geffert
Getting Ready for Competition in Japan: Lessons Learned from Abroad Published Article By Sean Gammons, Dr. Glenn R. George, and Willis Geffert et al.
Title Date Type
NERA Economic Consulting Announces Associate Director Promotions 05 August 2019 Press Release