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

1,053 Profile Views

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Lydia VonRueden

Jan 29, 2026

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

If you need a Energy Law lawyer, John O. Shirley is the one to call. Great job and very responsive team. They kept me in the loop and always had time to explain the details of my case. I felt like I w...

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Erick Reichel

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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Darren Jakubowski

Jan 29, 2026

Highly recommend John O. Shirley for anyone needing expert Energy Law help in Louisiana

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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Rickey Gerlach

Jan 29, 2026

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

If you're looking for someone who actually cares and will fight for you, go to John O. Shirley. They helped me out big time with my Energy Law issue and kept me informed at every step of the process....

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Michele Weber

Jan 29, 2026

Top notch experts in Baton Rouge - John O. Shirley is by far the best lawyer I've ever had

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...