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About Cathy

For more than two decades, Catherine (Cathy) McCarthy has represented clients on energy regulation and policy matters. Cathy currently chairs the firm's energy regulatory department. Her experience consists of obtaining Federal Energy Regulatory Commission (FERC) and state authorizations for major projects and transactions; FERC compliance and enforcement matters; FERC transmission and centralized markets issues; and rate, tariff and refund matters. She also represents energy clients before the Department of Energy, the Federal Communications Commission and the Nuclear Regulatory Commission. Cathy was formerly a partner and co-head of Dewey & LeBoeuf’s 25 lawyer energy regulatory group.

Cathy has been recognized as one America’s Leading Lawyers for Energy Law by Chambers USA (2010-2017) and Chambers Global (2014-2017); selected as one of The American Lawyers 45 Under 45 (2011); and included in The Legal 500 United States, Energy: Regulatory (2011-2013, 2016-2017).

Catherine McCarthy receives praise from a client who reports that she is an 'excellent lawyer with deep knowledge of federal energy regulatory matters, coupled with practical, clear advice.'
Chambers USA, 2017


Recent Notable Matters

International energy company — U.S. regulatory approvals for its combination with another energy player, creating the world's largest independent power producer

Purchaser — $450 million acquisition of a waste-to-energy business

Energy company — $7.4 billion sale to a consortium of infrastructure funds

Energy company — $8 million merger

Publications and Speeches

"FERC Compliance," Portland, OR, October 2016.

"FERC Reconsiders Horizontal Market Power in Transactions," Law360, September 2016.

"Changing Mix of U.S. Power Generation Presents Opportunities and Legal Challenges," American Bar Association, May 2016.

"Energy & Utilities Sector" Financier Worldwide, December 2015.

"Energy Infrastructure Development Faces Impediments," Natural Gas & Electricity Journal, April 2015.

"Impacts of New FERC ROE Calculation Formulae on Transmission Owners and Projects," Infocast’s 18th Annual Transmission Summit, March 2015.

"Regulatory Approvals in Transactions," Washington, DC, August 2014.

"Utility M&A: Mid-Year Update," SNL Energy Webinar, September 2013.

"Rolling Off Long-Term Power Sales Agreements? Plan Ahead to Avoid Regulatory Speed Bumps," 21st Annual North American Waste-to-Energy Conference, April, 2013.

"Takeaways from FERC’s Recent Due Diligence Order," Law360, February 2013.

"Energy & Utilities Sector Roundtable," Financier Worldwide, December 2012.

"Uncharted Territory: Lessons Learned and Next Steps in Light of Recent FERC Enforcement Orders," Houston, TX, December 2012.

"FERC Order 1000 gives transmission planning an update," Windpower Engineering & Development, April 2012.

"Transmission Incentives and Order 1000," Yale Alumni in Energy Annual Conference, New Haven, CT, March 2012.

"Due Diligence Workshop - SNL EXNET Power & Utilities M&A Symposium," New York, January 2012.

"FERC Order 1000: Road Map and Speed Bumps," SNL Energy Webinar, January 2012.



Georgetown University Law Center,
Yale University,

Bar Admissions

District of Columbia
New York


American Bar Association
Vice Chair of Electricity Committee and Co-Chair of Programs Committee, Infrastructure and Regulated Industries Section



Energy Infrastructure Development Faces Impediments

March 13, 2015
Natural Gas Electricity

Roundtable: Energy & Utilities Sector

December 31, 2012
Financier Worldwide

Post Election Update

November 9, 2012

People Moves of the Week

May 14, 2012
Mergers & Acquisitions

Bracewell picks up five new partners

May 9, 2012
Houston Business Journal - Online



Chambers Global
Energy: Electricity (Regulatory & Litigation), 2014 - 2017
Chambers USA
Nationwide Energy: Electricity (Regulatory & Litigation), 2010 - 2017
The Legal 500 United States
Energy Regulatory: Conventional Power, 2017; Energy: Regulatory, 2011 - 2013, 2016 - 2017; Transaction and Regulatory, 2011
Euromoney Institutional Investor plc
Expert Guides
Energy & Natural Resources, 2012 - 2017
Euromoney Institutional Investor plc
Expert Guides, Women in Business Law
Energy & Natural Resources, 2012 - 2017
Thomson Reuters
Washington, D.C. Super Lawyers
2013, 2015 - 2017
ALM Media Properties, LLC
The American Lawyer
45 Under 45, 2011
Georgetown University Law Center
Georgetown Immigration Law Journal
Administrative Editor
Columbus School of Law
The Catholic University of America
Adjunct professor, 1996-1998


Past Events

18th Annual Transmission Summit 2015

Washington, D.C.
March 10, 2015
March 12, 2015

Uncharted Territory

December 12, 2012