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Adrienne Clair


Washington, D.C.
202 585 6919 202 585 6919 direct

Adrienne represents clients in electric and natural gas pipeline matters, and counsels on compliance and enforcement.

Adrienne serves on Thompson Coburn's Management and Executive Committees.

Adrienne represents primarily cooperative and municipal utilities in applications, litigation, and rulemaking proceedings before the Federal Energy Regulatory Commission (FERC) regarding Regional Transmission Organizations (RTO) markets for energy and capacity, transmission planning and cost allocation, and related transactions and proceedings involving natural gas pipeline rates and services. She counsels clients in compliance matters, including FERC enforcement actions and audit of existing compliance programs.

Adrienne has litigated numerous proceedings before FERC, including electric cooperative wholesale power contract and rate design issues, reactive power revenue requirements, mergers, and transmission formula rate and cost recovery matters. She assists clients in obtaining market-based rate authority and complying with related reporting requirements.

As part of her FERC practice, Adrienne also represents clients in appellate proceedings. She also practices before the D.C. Public Service Commission in certain electric utility and natural gas local distribution company matters.

Representative Matters

Represents generation and transmission cooperative utilities in the PJM Interconnection, LLC, Midcontinent Independent System Operator, and Southwest Power Pool regions on issues including capacity market design and accommodation of load-serving entities, litigation regarding formula rates, transmission planning and cost allocation, general electric and natural gas rate proceedings, and general rulemaking proceedings before the FERC.

Successfully litigated proceedings regarding corporate reorganization under Federal Power Act Section 203.

Represents a municipal utility and a group of local distribution companies in natural gas pipeline rate and tariff proceedings before the FERC.

Represents trade associations for municipal and cooperative utilities in select rulemaking and market design proceedings.

Represented the Office of the People's Counsel of the District of Columbia in the merger of Washington Gas and Altagas, as well as Washington Gas' Accelerated pipeline replacement and Pepco rate matters.


Federal Energy Policy: Impact of the 2020 Election


“Prepared the 2021 update to the Public Utility Regulatory Policies Act (PURPA) Title II Compliance Manual, for the American Public Power Association, Edison Electric Institute and the National Rural Electric Cooperative Association”; 2021


New Generation in the Valley, The Basics of Generator Interconnection Agreements,
TVPPA Legal Seminar, February 2023

Transmission Planning Initiatives and You,
APPA Legal and Regulatory Conference, November 2022

A New Day for Distributed Energy Resources: FERC’s Order No. 2222,
G&T Accounting and Finance Association Annual Conference, June 2022

"Transmission Planning at FERC: Toward a Customers' Bill of Rights";
APPA Legal and Regulatory Conference, October 2017

“Trends in Transmission Policies and Rates: Up, Up and Away?”
NRECA G&T Legal Seminar, November 2016

"Getting to Point B: Trends in Federal Transmission Policy and Rates, and Drivers of the Transmission Boom";
G&T Accounting and Finance Association Annual Conference, June 2016

Panelist, "Keeping the Lights On: Challenges Facing the Energy Industry";
International Women's Insolvency & Restructuring Confederation Fall Conference, September 2015


Adrienne Clair Receives EBA Diversity & Inclusion Champion Award

Adrienne Clair, Matt Rudolphi Named as Lawdragon 500 Leading Energy Lawyers

Industry Coverage: Thompson Coburn’s Strategic Next-Gen Leadership Announcement

Thompson Coburn Positions for Next-Gen Leadership: Announces Next Firm Chair & Senior Leaders

Clair and Murphy Honored on First Lawyers of Color “Wonderful Women” List

Chambers USA Recognizes Thompson Coburn Practices for Excellence in 2023 Guide

Thompson Coburn attorneys recognized in 2022 Chambers USA

Thompson Coburn attorneys recognized in 2021 Chambers USA

Congratulations to our 2021 Best Lawyers ‘Lawyers of the Year’ and ‘Ones to Watch’

Thompson Coburn’s Management Committee welcomes three new members

Thompson Coburn attorneys recognized in 2020 Chambers USA