Energy Law Government Relations Practice
John O. Shirley
Awarded Practice Areas
Biography
John Shirley practices in the area of business law, having represented public utilities before the Louisiana Public Service Commission for over twenty years. His practice consists of representing electric, gas, water and sewer utilities, motor carriers, telecommunications companies, and wind and other renewable energy companies before the Louisiana Public Service Commission. He also consults and lobbies elected public service commissioners, the Louisiana Bond Commission, executive staff and the Louisiana legislature on behalf of his clients.
Prior to joining the firm, he was the founding partner of Shirley, Ezell, Guarisco & Marionneaux, LLC.
Overview
Baton Rouge, Louisiana
- Louisiana State University, J.D., graduated 1986
- Southeastern Louisiana University, BS, graduated 1976
- Louisiana, Louisiana State Bar Association
- Baton Rouge Bar Association - Member
- Energy Bar Association, New Orleans Chapter - Board Member
- Federal Bar Association - Member
- Louisiana State Bar Association - Member, Public Utilities Section
Baton Rouge, Louisiana
- Louisiana, Louisiana State Bar Association
- Baton Rouge Bar Association - Member
- Energy Bar Association, New Orleans Chapter - Board Member
- Federal Bar Association - Member
- Louisiana State Bar Association - Member, Public Utilities Section
- Louisiana State University, J.D., graduated 1986
- Southeastern Louisiana University, BS, graduated 1976
Client Testimonials
Awards & Focus

Named "Lawyer of the Year" by Best Lawyers® for:
- Energy Law, Baton Rouge (2017)
- Government Relations Practice, Baton Rouge (2014)
Recognized in The Best Lawyers in America® 2026 for work in:
- Energy Law
- Government Relations Practice
Special Focus:
- Public Utility
Awards:
- Chambers USA: America's Leading Lawyers for Business
- The Best Lawyers in America
News & Media
Publications
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