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Thomas O. Lemon

Thomas O. Lemon focuses his practice on litigation and regulation in the energy sector. After receiving his J.D. from Washington University in St. Louis in 2011, Tom worked as an attorney-advisor in the Federal Energy Regulatory Commission’s (FERC) Office of Enforcement. In his time at the Commission, Tom worked on nearly every type of FERC Enforcement matter, and has extensive experience with natural gas and electricity market fraud and manipulation claims, NERC reliability standards violations, wholesale demand response, and LMP and capacity price formation. He has done investigatory and enforcement work in several ISO and RTO markets, including CAISO, PJM, NYISO, and ISO New England.


  • Energy regulation
  • Energy litigation and investigation
  • Energy and commodities
  • Global energy and infrastructure
  • LNG regulatory issues and agreements
  • NERC electric reliability issues



  • Helped reach a $1.4 million civil penalty and disgorgement settlement with an energy intelligence software company relating to violations of electricity market rules in the context of wholesale demand response.°
  • Helped negotiate $3.25 million civil penalty settlement with an investor-owned utility relating to NERC reliability standards violations that contributed to the massive blackout of Southern California and Arizona on September 8, 2011.°

°The above representations were handled by Mr. Lemon prior to his joining Greenberg Traurig, LLP.

  • Attorney-Advisor, Federal Energy Regulatory Commission, Office of Enforcement, Division of Investigations, 2011-2016
  • Intern, Federal Energy Regulatory Commission, Office of Enforcement, Division of Investigations, 2009-2010


  • J.D., Washington University in St. Louis School of Law, 2011
  • B.A., Boston College, 2008
  • Massachusetts
  • Maryland