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

1,052 Profile Views

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Essie Hayes

Jan 29, 2026

Would recommend John O. Shirley for sure to anyone in Baton Rouge needing legal help

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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Lois Botsford

Jan 29, 2026

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

I was really stressed about my case in Baton Rouge, but John O. Shirley made everything so smooth and stress-free. Seriously, the best decision I've made lately was hiring them. They handled every det...

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Benny Cruickshank

Jan 29, 2026

Finding John O. Shirley was the best thing that happened during my tough Energy Law battle

Last year, I found myself in a really difficult spot with a Energy Law problem in Baton Rouge. I had no idea where to start and was honestly terrified of the process. John O. Shirley was recommended t...

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Colleen Hessel

Jan 29, 2026

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

Last year, I found myself in a really difficult spot with a Energy Law problem in Baton Rouge. I had no idea where to start and was honestly terrified of the process. John O. Shirley was recommended t...

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Hattie Olson

Jan 29, 2026

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

I was really stressed about my case in Baton Rouge, but John O. Shirley made everything so smooth and stress-free. Seriously, the best decision I've made lately was hiring them. They handled every det...