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Michael J. Tomsu
Michael J. Tomsu
Partner — Energy Regulation
Partner — Energy Regulation

Michael J. Tomsu

Michael J. Tomsu

200 West 6th Street
Suite 2500
Austin, Texas 78701

start quote symbolI bring a wealth and depth of information that can only be gained through more than 30 years of experience helping my clients meet their ever-evolving needs in the electricity, telecom, oil and gas, or water space. I’ve built strong relationships at the regulatory agencies and have demonstrated that we are solid partners working to achieve exemplary results.end quote symbol
Michael J. Tomsu

Experience Highlights

  • Duke Energy in the upgrade of its Notrees wind farm battery system, including negotiations with Samsung SDI America for the provision of new batteries and Younicos for installation and service of the energy storage management system

  • Duke Energy in regulatory matters related to the development of the first commercial-scale energy storage facility in Texas, and in numerous regulatory matters related to ongoing operations at the facility

  • Assisted Windstream Communications in drafting legislation reforming the administration of the Texas Universal Service Fund, and in drafting proposed rules and comments before the PUCT in a rulemaking matter implementing the legislation

  • Represent NRG Energy in all regulatory matters involving the administration of the decommissioning trusts related to its ownership interest in the South Texas Nuclear Project

  • Represented Wayzata in obtaining regulatory approvals, and in transactional matters, related to the sale of the Guadalupe Power Facility

  • Ongoing representation of all emergency communications districts in the State of Texas on matters involving the introduction of Next Generation 9-1-1 technology

  • Represented a Texas wind generation company in multiple contested matters involving the reactive power and primary frequency response requirements applicable to wind facilities in ERCOT

  • Represent The University of Texas Medical Branch at Galveston on installation of a dedicated gas pipeline to serve the campus, and on related commodity transportation agreements

  • Assisted Weingarten Realty with the negotiation of a nationwide agreement for the installation of rooftop solar facilities on their properties

  • Assist Trafigura on Texas Railroad Commission matters involving regulatory compliance related to the operation of their intrastate pipelines and terminal storage facilities

  • Multiple engagements negotiating long-term electricity supply agreements on behalf of several component institutions of The University of Texas System

  • Represented Global Infrastructure Management in the acquisition and ongoing operation of the Channelview Cogeneration Plant

  • Represent The University of Texas at San Antonio regarding the negotiation of a long-term gas supply agreement, and related gas utility infrastructure matters

  • Represented multiple clients with regard to the licensing of charging facilities for electric vehicles


  • The University of Texas School of Law, J.D., 1986
  • The University of Texas at Austin, M.B.A., 1986
  • The University of Texas at Austin, B.A., Chemistry, 1982
  • Chambers USA, Energy: State Regulatory & Litigation (Electricity)(Texas), 2011–2023
  • Board Certified in Administrative Law, Texas Board of Legal Specialization
  • Legal 500 U.S., Energy Regulation, 2013 and 2014; Energy Regulation: Conventional Power, 2020–2023
  • The Best Lawyers in America® (BL Rankings, LLC), Administrative/Regulatory Law (Austin), 2003–2014, 2017, and 2019–2024
  • Legal Media Group’s (Euromoney’s) Expert Guide to the World’s Leading Energy and Natural Resource Lawyers, 2016
  • Selected to the Texas Super Lawyers list, Super Lawyers (Thomson Reuters), 2003, 2004, 2015–2023
  • Selected to the 500 Leading Energy Lawyers, Lawdragon, 2023 and 2024
  • Adjunct Professor: The University of Texas School of Law, Spring 2013 “Electricity Law, Policy and Transactions”
  • Member: The University of Texas College of Natural Sciences Foundation Advisory Council
  • Current Board Chair: Capital Area Food Bank; Past Board Chair: Leadership Austin
  • Life Fellow: Texas Bar Foundation
  • Texas