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Professional background
Biography image

Marvin T.Griff


Focus Areas

  • Regulatory counsel to Ohio’s generation and transmission cooperative, which provides power to 24 Ohio-based electric cooperatives.
  • Advise and represent since 2005 Oklahoma Panhandle electric cooperative in federal rate and transmission proceedings and regional transmission organization matters.
  • Counsel to electric cooperative on interconnection agreements with wind project developers.
  • Counsel to western U.S. city on regulatory and legislative initiatives to prevent early closure of low-cost, coal-fired baseload generator and on development of a groundbreaking $1.3 billion carbon capture, utilization and sequestration project at the generating facility.
  • Counsel to key stakeholder in $2.3 billion greenfield pumped storage project.
  • Represent world’s largest recycler of aluminum and leading producer of flat-rolled aluminum products in contract negotiations involving new electric and gas supply arrangements.
  • Counsel to one of the largest privately owned independent oil and gas companies in the U.S. on regulated transportation, service, and supply matters.
  • Represent district energy system on gas and electric supply and reliability matters.
  • Regulatory project counsel to midstream natural gas company on FERC-certificated $260 million pipeline and storage expansion project in Marcellus Shale producing region.
  • Represented New York Stock Exchange-listed master limited partnership on more than $800 million in natural gas storage cavern acquisitions.
  • Negotiated natural gas supply and transportation arrangements for interstate pipelines (e.g., Alabama-Tennessee Natural Gas Co.), natural gas local distribution companies (e.g., Niagara Mohawk, Boston Gas), and large industrial electric and gas customers.
  • Regulatory counsel to interest owner of Keystone Pipeline.
  • Co-counsel for large shipper in multimillion-dollar oil pipeline transportation, product storage, and cost recovery arbitration involving Alliance Refinery and Colonial Pipeline.
  • Regulatory audit of 238,000 barrels/day refinery for major independent oil company in the northeast.
  • Represented southwestern U.S. utility in sale of its California retail electric distribution assets.
  • Counseled electric cooperative on acquisition of 119-mile electric transmission delivery system located in Kansas, Oklahoma and Texas from Xcel Energy.
  • Advised in the acquisition of electricity and gas distribution interests and systems in New Hampshire and Maine.
  • Counseled Canadian company in $900 million acquisition of wind generation interests in the United States with a total combined capacity of 480 megawatts.
  • Regulatory counsel on $240 million construction and term loan for wind farm under development in Missouri.
  • Defended complaint involving transmission access issues and divestiture of 216-mile, 345-kV bulk power Eastern Interconnection Project interstate transmission line.
  • Advised on federal transmission access issues for Texas cogeneration facility.
  • Represented major demand response provider in state and various organized electric markets operated by PJM, ISO New England Inc., the Midwest Independent Transmission System Operator Inc., and the New York Independent System Operator Inc.
  • Advise investment banks and hedge funds on utility mergers and other complex energy transactions.
  • Co-author, “Opportunities for the Oil Industry in NAFTA Renegotiations,” Law360, January 2018
  • “FERC Proposes Cybersecurity Incident Reporting Rule,” Thompson Hine Privacy & Cybersecurity Update, January 2018
  • Co-author, “The QER On Demand Response And Efficiency,” Law360, March 2017
  • Co-editor, “Energy Policy Act of 2005, Title III Summary and Analysis of Major Provisions,” Chapter 5, Regulation of the Gas Industry, 2016 to 2022
  • Co-author, “This Means War, but Are We Prepared for Cyber Warriors?” Intelligent Utility, May 2015
  • Author, “Cybersecurity and the Electric Grid,” Intelligent Utility, September 2014
  • Author, “What’s New About the FERC’s New Utility Merger Policy?” Public Utilities Fortnightly, February 1997
  • Author, “Recent Federal Initiatives to Promote the Use of Natural Gas and Unconventional Gas: High Octane Delivery or Just Hot Air?” International Unconventional Gas Symposium Proceedings, 1995
  • Author, “Take-or-Pay Clauses and New Gas Supply Arrangements in Today’s Gas Market,” Natural Gas Journal, 1986
  • Instructor, Master Class on Building an Effective Compliance Program, American Conference Institute, May 2016
  • Speaker, “The Potential for National Carbon Trading – The Clean Power Plan Under Attack,” American Conference Institute, May 2016
  • Speaker, “Cybersecurity and Energy Markets – the Law,” American Conference Institute’s Forum on Energy Trading, Washington, D.C., November 2013
  • Conference organizer and developer, “Laying the Foundation for a Sustainable Energy Future: Legal and Policy Challenges,” co-sponsored by The George Washington University Law School, the Environmental Law Institute and the Constellation Energy Foundation, April 2013
  • Speaker, “Load Participation as a Resource in Energy Markets: A Solution to a Utility Problem,” Annual Conference on the Law of Demand Response, October 2011
  • Moderator, “Whose Data Is It Anyway?” Peak Load Management Alliance webinar, February 2011
  • Speaker, Annual Conference on the Law of Demand Response, Washington, D.C., December 2010
  • Speaker, “Public Enterprise Restructuring: Case Studies of the U.S. Oil and Natural Gas Industry,” U.S. government-sponsored delegation from Bangladesh, Nepal and multiple African countries, April 2003
  • Speaker, “Restructuring and Convergence: Successful Strategies in the Energy Services Marketplace,” Public Utilities Reports Inc. conference, May 1997
  • Speaker, “Order No. 636 and Other Federal Regulatory Developments Affecting the Natural Gas Industry,” Eastern Coalbed Methane Forum conference, March 1993
  • Lead trainer, “Bringing Regulatory Reform to the Oil and Gas Sectors of Central Asian States as a Means of Facilitating Increased Capital Investment,” U.S. Agency for International Development program for officials from Kazakhstan, Turkmenistan and Uzbekistan in Atyrau, Kazakhstan, March 1999
  • Selected for inclusion in The Best Lawyers in America© 2021 to 2024 for Energy Law
  • Outstanding Performance Award, Office of the General Counsel, Federal Energy Regulatory Commission, 1988
  • First Prize, Nathan Burkan Memorial Writing Competition, American Society of Composers, Authors and Publishers, 1980

Professional Associations

  • American Bar Association
  • Energy Bar Association

Professional Activities

  • Articles editor, Energy Law Journal


  • Tulane Law School, J.D., 1981,
    cum laude
  • Brandeis University, B.A., 1978

Bar Admissions

  • District of Columbia
  • Alabama
  • Louisiana
  • Massachusetts

Court Admissions

  • U.S. Court of Appeals for the Federal Circuit
  • U.S. Supreme Court