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

1,048 Profile Views

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Lorraine Fritsch

Jan 29, 2026

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

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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Colleen Walker

Jan 29, 2026

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

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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Leigh Hayes

Jan 29, 2026

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

John O. Shirley is fantastic and very professional. Don't hesitate to hire them if you're in Louisiana and need help. They really know their stuff and will go the extra mile to make sure you're taken...

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Jeff Osinski

Jan 29, 2026

A honest review of my experience with John O. Shirley regarding a Energy Law matter

I was skeptical about hiring a lawyer for my Energy Law issue in Baton Rouge, but John O. Shirley changed my mind completely. They were professional, responsive, and most importantly, they got results...

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Jennie Casper

Jan 29, 2026

Many thanks to John O. Shirley for the hard work and dedication to my legal matter

John O. Shirley is fantastic and very professional. Don't hesitate to hire them if you're in Louisiana and need help. They really know their stuff and will go the extra mile to make sure you're taken...