John O. Shirley

John O. Shirley

Energy Law Government Relations Practice
Recognized in Best Attorney USA since 2011

About John

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.

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.

Prior to joining the firm, he was the founding partner of Shirley, Ezell, Guarisco & Marionneaux, LLC.

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Reviews

4.5 / 5

38 Reviews

1,055 Profile Views

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Nick Rosenbaum

Jan 29, 2026

Outstanding experience with John O. Shirley in Baton Rouge - truly the best legal team

Short and sweet: John O. Shirley is the real deal and a true professional in the field of Energy Law. If you're in Baton Rouge and need help with your legal issues, call them immediately. You won't re...

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Ira Dibbert

Jan 29, 2026

So glad I called John O. Shirley to handle my Energy Law case in Baton Rouge

I wasn't sure who to call for my Energy Law problem, but I'm so glad I went with John O. Shirley. They really listened to me and understood my situation. It was such a relief to have someone so knowle...

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Kristi West

Jan 29, 2026

A huge weight off my shoulders thanks to the amazing work of John O. Shirley

I've already told all my friends and family about John O. Shirley. If you need Energy Law help in Louisiana, they're the ones to see without any doubt. They are local experts who really understand the...

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Florence Mertz

Jan 29, 2026

Excellent legal representation provided by John O. Shirley for my Energy Law case

Best lawyer for Energy Law in Baton Rouge. Period. I've seen others, but John O. Shirley is on another level. They truly care about their clients and work hard to get the best results. I am so thankfu...

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Darrel Hansen

Jan 29, 2026

A very good experience overall with the entire team at John O. Shirley's legal practice

Needed help with Energy Law and John O. Shirley delivered on their promises. They're professional, efficient, and easy to talk to. Good choice for anyone in Louisiana looking for high-quality legal re...