Wendy B. Warren


Wendy B. Warren

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For over twenty years, Wendy has represented a diverse range of energy clients including investor-owned utilities, independent generators, investors in transmission infrastructure and local gas distribution companies before the Federal Energy Regulatory Commission (FERC), the Department of Energy and federal courts.

Her practice focuses on rate regulation, energy market rules and operation, open access transmission issues, administrative litigation, mergers and acquisitions, enforcement and compliance, and authorizations, as well as representing clients in transactional and project finance matters. Wendy enjoys the challenge of representing clients in numerous multi-party, litigated proceedings at FERC concerning rates (from both the utility and customer perspectives), open access, energy markets, mergers and acquisitions, and interconnections. She excels at counseling clients on a wide variety of transactional and compliance matters, including advising on regulatory structuring for project finance,negotiating and drafting varied contracts such as power purchase agreements, fuel supply agreements, and development agreements, and representing and advising clients in public and non-public FERC investigations and audits.

Wendy’s hardwork and dedication to her clients’ business initiatives is often recognized and noted in Chambers USA. For example, Chambers USA says “Sources describe her as ‘a terrific writer . . . very good at getting to the point in her analysis,’”and reported Wendy as “very client-focused, an excellent writer and good in the courtroom too.” Chambers USA goes on to credit her with maintaining “terrific relationships within the FERC regulatory arena” and being a “very good strategic thinker.”

Representing Ameren Corporation and its affiliates before FERC in rate proceedings (including formula rate proceedings), complaints, wholesale market issues, and wholesale distribution issues, and in connection with service agreements, interconnection agreements, and audit and compliance matters.

Successfully petitioned for transmission infrastructure investment incentives for Ameren Transmission Company for two major transmission projects in Illinois with an asset value of approximately $1 billion.

Representing a wind farm developer in obtaining the interconnection of its project to, and transmission service for its project on, a generator tie line owned by two existing wind farms, through a successful petition to FERC for the requested service, briefing to FERC, followed by a negotiated resolution among the parties as to the rates, terms, and conditions for the requested service.

Advising OMERS Administration Corporation in its acquisition of approximately 24% of the membership interests in the holding company of Puget Sound Energy, Inc. and in its acquisition of Leeward Renewable Energy, a leading renewable energy producer in the United States, as well as advising OMERS in regulatory compliance matters related to integrating these interests into its larger energy portfolio.

Advising an investor-owned utility in obtaining the necessary FERC approvals for its subsidiary’s acquisition of wind farms and interests in wind farms, as well as FERC-authorized market-based rates for the subsidiary, and the required FERC approval for affiliate sales of energy from certain of the acquired wind farms.

Representing New Mexico Gas Company in the litigation of major, multi-party gas pipeline rate cases, as well as advising on compliance and commercial and regulatory matters.

Representing Trans Bay Cable LLC in a transmission rate proceeding at FERC.

District of Columbia


U.S. Court of Appeals, Ninth Circuit

U.S. Court of Appeals, District of Columbia Circuit

University of Virginia School of Law, J.D. (1995)

Syracuse University, M.L.S. (1991)

University of Virginia, B.A. (1988)

Energy Bar Association

The Federalist Society

Women’s Council on Energy and the Environment

Chambers USA, Energy: Electricity (2010-2020)

Chambers Global, Energy: Electricity (2016-2020)

The Best Lawyers in America, Energy Law (2014-2021)

Best Lawyers
  • A Study in Prevention for the Energy Trading Industry: Avoiding FERC Scrutiny, Sanctions, and Enforcement Actions and Building an Effective Energy Trading Compliance Program, 14th National Forum on Energy Trading Compliance & Regulatory Enforcement, American Conference Institute, 2018
  • Building transmission under Order No. 1000: Where are we in planning vs. implementation?, The 12th Annual Comprehensive Conference on Energy in the Northeast, Law Seminars International, 2015
  • Wright & Talisman co-sponsored Energy Investment Conference bringing together FERC Commissioners, utilities, private equity and other investors to discuss electric industry investment, panel moderator, 2008-2017
FERC Order No. 2222 Aims to Facilitate Distributed Energy Aggregator Participation in Wholesale Electricity MarketsD.C. Circuit Upends FERC Tolling Order PracticeFERC Modifies Approach to Return on Equity for Utilities and PipelinesView News