Margaret Claybour represents investor-owned utilities, merchant and renewable generators, and independent transmission companies before the Federal Energy Regulatory Commission (FERC).  She also represents generation developers, independent power producers, merchant transmission developers, private equity funds and institutional investors in electric assets, and power marketers in transactional and federal regulatory matters involving the energy industry. 

Margaret assists clients in developing regulatory strategy and structure transactions, and advises them in ratemaking proceedings and settlement procedures. Margaret helps clients obtain various regulatory approvals, including Section 203 and 204 approvals, exempt wholesale generator and qualifying facility status determinations, and market-based rate authority. She regularly advises clients on compliance with North American Electric Reliability Corporation (NERC) and regional entity reliability standards.

  • Experience
    • Represents investor-owned utilities as transmission owners and market participants in SPP, MISO, PJM, and ISO-NE markets.
    • Provides strategic and regulatory FERC counsel to clients, including investor-owned utilities, merchant and renewable generators, commercial banks and investment banks, private equity investors, and hedge funds.
    • Counsels renewable generation developers with respect to the regulatory status of their projects and FERC compliance issues.
    • Provides special federal energy regulatory counsel in connection with acquisitions, sales, mergers, and energy project financings.
    • Represented investor-owned utilities in developing and filing at FERC transmission formula rates, generation formula rates and formula rate protocols.
    • Counsels clients on transmission and generation formula rate implementation and formula rate protocol compliance.
    • Defended investor-owned utility in complaint challenging utility’s return on equity.
  • Professional Affiliations

    Energy Bar Association

    Women's Bar Association of the District of Columbia

  • Awards & Honors
  • Bar & Court Admissions
    District of Columbia Bar
    U.S. Court of Appeals for the District of Columbia Circuit
    U.S. Court of Appeals for the Ninth Circuit
  • Government Service
  • News & Presentations
  • Thought Leadership

Areas of Focus


Washington University School of Law J.D., 2002
Associate Editor, Washington University Law Quarterly

Carleton College B.A., cum laude, 1991