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

1,056 Profile Views

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Bobby Beahan

Jan 29, 2026

If you're feeling lost with a Energy Law issue in Louisiana, call John O. Shirley now

I don't usually write reviews, but the help I got from John O. Shirley during my Energy Law case in Louisiana deserves to be shared. It was a messy situation, and I was getting nowhere on my own. Thei...

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Peggy Kulas

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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Casey Rutherford

Jan 29, 2026

So happy with the results of my case thanks to the hard work of John O. Shirley and staff

I didn't think I'd find such a good lawyer in Louisiana, but here we are and I am thoroughly impressed. John O. Shirley is just awesome and exceeded all my expectations. No complaints at all! They rea...

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Marion Jerde

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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Audrey Upton

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...