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

1,050 Profile Views

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Allison Kunze

Jan 29, 2026

John O. Shirley did a great job handling my complex Energy Law case from start to finish

I appreciate how John O. Shirley handled my case. No fluff, just straight to the point and very effective representation for my Energy Law matter. They are obviously very experienced and know how to n...

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Javier Tillman

Jan 29, 2026

Professional service and clear communication provided by John O. Shirley in Baton Rouge

It's hard finding a reliable lawyer these days, but John O. Shirley in Baton Rouge is definitely one of the good ones. Would use them again if needed without hesitation. They are professional, respons...

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Ann Lehner

Jan 29, 2026

Absolutely Great! I couldn't be happier with the service from John O. Shirley

Really glad I found John O. Shirley for my case. They were a huge help and made everything understandable. I was very impressed with their knowledge and how they handled the opposition. If you're in L...

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Todd O'Keefe

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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Ellen Leuschke

Jan 29, 2026

Reliable lawyer you can count on - John O. Shirley provided excellent service throughout

I've worked with a few lawyers in Baton Rouge over the years, but John O. Shirley stands out for their honesty and thoroughness. They were clear about the process and kept me updated at all times. I f...