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William Garner, Co-Chair of GT’s Energy & Natural Resources Practice Group and Chair of the firm’s Renewable Energy Practice Group, focuses his practice on domestic and international hydrocarbon and inert gas transactions and renewable energy. He has experience working on worldwide natural gas projects, including unconventional gas. He has worked on projects in the United States, Canada, Saudi Arabia, Australia, Poland, Kazakhstan, U.A.E., United Kingdom, Algeria, Turkey and Mexico. William has served as an investment banker for the world's leading oil and gas investment banking boutique, advising on domestic and international upstream and midstream transactions. He presently is leading a large team of GT and other outside law firm attorneys to develop the world's largest carbon sequestration project.

Prior to joining the firm, William was senior counsel at a multi-practice global law firm and was former general counsel of KN Energy (NYSE:KNE) and Spectra Energy (NYSE:SE).


  • Gas utilities and pipelines
  • Oil and gas upstream
  • LNG/NGLs
  • Energy and gas storage
  • Unconventional gas
  • Carbon capture and sequestration
  • Biofuels
    • Hydrogen
  • Energy and environmental policy
  • Corporate and mergers and acquisitions
  • Energy project development
  • Global energy and infrastructure 


Recognition & Leadership

  • Recommended, The Legal 500 Latin America Guide, "Latin America: International – Projects and Energy," 2022
  • Listed, IFLR1000, "Highly Regarded," Project Development, 2020-2023
  • Named, Client Service All Star, BTI Client Service All-Stars Report, 2020
  • Listed, Law360, "Energy MVP," a Top 5 Energy Lawyer in the U.S., 2019 
  • Listed, Super Lawyers magazine, Texas Super Lawyers, 2016-2019
  • Listed, Euromoney’s Expert Guide to the World’s Leading Experts in Energy Law, 2013-2021
  • Listed, Houston Business Journal "Who's Who in Energy," 2012-2015
    • Recognized among the "Top Energy Lawyers in Houston," 2012
  • Listed, The Legal 500 United States
    • Finance - Project Finance, 2023
    • Energy Regulation - Electric Power, 2023
    • Energy Regulation – Conventional Power, 2019-2022
    • Energy Regulation – Oil and Gas, 2020-2023
    • Energy Transactions – Oil and Gas, 2017-2022
    • Energy – Renewable/Alternative Power, 2020-2023
    • Energy – Regulatory and Transactions, 2015
  • "100 Most Influential Business Leaders in the Energy Industry Today," Houston Business Journal, November 2013
  • Team Member, Corporate Board Member magazine and FTI Consulting Inc., one of "America’s Best Corporate Law Firms," 13th Annual Legal Industry Study, 2013
  • Listed, Chambers USA Guide, Energy Law, 2012
  • Recipient, Magna Stella Award, Texas General Counsel Forum, 2008
  • Member, Law360 Energy Editorial Advisory Board, 2021 and 2023
  • Member, Colorado Bar Association
  • Member, Texas Bar Association


  • J.D., SMU Dedman School of Law, 1974
    • Member, Journal of Air Law and Commerce
  • B.A., University of Arkansas, 1971
    • Member, Phi Beta Kappa
  • Colorado
  • Texas