Marcia Hook is an energy regulatory partner in the Washington, D.C., office of Kirkland & Ellis LLP. Drawing on a deep understanding of complex laws, regulations, and market rules, Marcia provides clients with practical advice to navigate opaque energy regulatory requirements and complicated energy litigation. She has represented clients across the energy industry before the Federal Energy Regulatory Commission, the Department of Energy, state public utility commissions, and U.S. Courts of Appeals.

Her experience representing clients across the energy industry helps Marcia provide transactional advice that extends beyond standard-issue regulatory matters such as approvals and filings to transaction strategy and deal structure, tailored to the needs and objectives of the client. Marcia also advises clients regarding the negotiation and development of commercial agreements, including agreements for the purchase and sale of power, transmission rights, hydrogen, natural gas, and LNG.

Marcia was recognized as “Up and Coming” in the 2021, 2022 and 2023 editions of Chambers USA for Electricity (Regulatory & Litigation), Nationwide, and “Up and Coming” in the 2022 and 2023 editions of Chambers Global for Electricity (Regulatory & Litigation), USA.


Thought Leadership


Moderator, “Energy Transition: Where Are We Now?” Kayo Infrastructure Summit, November 2022

Moderator, “Regulation of Hydrogen Pipelines: The Debate,” EBA 2022 Mid-Year Energy Forum, October 2022

Moderator, “Long Duration Energy Storage Bankability,” Kirkland & Ellis LLP 2022 U.S. DOE Energy Storage Financing Summit, October 2022

Panelist, “Funding the Future: Existing and Emerging Incentives for Energy Transition Projects,” Institute for Energy Law, December 2021

Moderator, “The Future of Low-Carbon Hydrogen,” Kirkland & Ellis LLP Webinar, April 2021


Up and Coming, Energy: Electricity (Regulatory & Litigation), USA, Chambers Global, 2022–2023

Up and Coming, Energy: Electricity (Regulatory & Litigation), Nationwide, Chambers USA, 2021–2023


Admissions & Qualifications

  • District of Columbia
  • New York


  • Harvard Law SchoolJ.D.2012

    Vice President of Practice Standards

    Harvard Legal Aid Bureau

  • Georgetown UniversityM.A., Arab Studies2009
  • Stanford UniversityB.A., International Relations2006