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Gregory G. "Greg" Duplantis, Energy Attorney in Lafayette, Louisiana

focused on Energy and Environmental

Lafayette, LA

Trusted energy attorney serving Lafayette.

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Quick answer

Gregory G. "Greg" Duplantis is an attorney based in Lafayette, LOUISIANA. The practice focuses on Energy and Environmental.

Based in
Lafayette, LOUISIANA
Experience
attorney
Known for
Energy · Environmental
  • Handles Energy and Environmental matters from Lafayette, LOUISIANA.
  • Recognized with Lawyer of the Year — Energy Law (Lafayette) (2026).

About Gregory G. "Greg" Duplantis: Gregory G. "Greg" Duplantis is an attorney based in Lafayette, LOUISIANA. The practice focuses on Energy and Environmental.

Areas of practice

Practice areas handled by Gregory G. "Greg" Duplantis

Gregory concentrates on energy and environmental. Each area below outlines the kind of case Gregory handles, typical outcomes to expect, and how the intake process starts.

Energy cases in Lafayette, Louisiana

Gregory takes energy matters in Lafayette, Louisiana. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Gregory agrees to represent you.

Environmental cases in Lafayette, Louisiana

Gregory takes environmental matters in Lafayette, Louisiana. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Gregory agrees to represent you.

Biography

About Gregory G. "Greg" Duplantis — Attorney of Louisiana energy experience

Gregory G. "Greg" Duplantis is an attorney based in Lafayette, LOUISIANA. The practice focuses on Energy and Environmental.

Greg Duplantis’ legal practice centers on oil and gas property title examination with an emphasis on analyzing and rendering complex opinions concerning title that is held by production. He frequently calculates varying royalty interests, overriding royalty interests, and proportionately burdened net revenue interests.

Greg routinely renders “stand up” title opinions that require physically searching the indices of courts' conveyance records and executing opinions on site. He also frequently represents clients before Louisiana state agencies governing oil and gas matters, including unitization issues, state leasing, commingling and pipelines.

Beyond the scope of complex title examination, a portion of Greg’s practice is dedicated to drafting agreements and contractual provisions on behalf of both operating and non-operating working interest owners, including the drafting and negotiating of provisions for joint operating agreements, drilling contracts, master services contract, unit and commingling agreements, gas sales, processing and marketing agreements, onshore and offshore facilities use agreements, mineral leases, seismic permits, right-of-ways, servitudes, surface and subsurface agreements and all other relevant forms of transactional documents and contracts.

Greg earned both his undergraduate and law degrees from Louisiana State University, where he was a four-time letter winner in pole vaulting. Following his graduation, he excelled as a world-class professional pole vaulter becoming a four-time U.S. Olympic Trials Qualifier. Greg, who is fluent in Swedish, met his wife Helena while both were competing on the LSU Track and Field Team. The couple and their four children currently reside in Lafayette, Louisiana, where Greg serves as a volunteer assistant track and field coach at the collegiate and high school levels. He is a “National Lead Coach” and frequent lecturer at the National Pole Vault Summit, and was recently inducted into the Louisiana High School Athletic Association Hall of Fame.

How Gregory handles energy matters

Greg Duplantis’ legal practice centers on oil and gas property title examination with an emphasis on analyzing and rendering complex opinions concerning title that is held by production. He frequently calculates varying royalty interests, overriding royalty interests, and proportionately burdened net revenue interests. Greg routinely renders “stand up” title opinions that require physically…

The kind of cases Gregory takes

Gregory reviews new inquiries case-by-case for energy and environmental matters in Lafayette and the surrounding Louisiana area.

Credentials

Gregory G. "Greg" Duplantis's legal education and bar admissions

  • Louisiana State University

    J.D. · 1996

Gregory studied at J.D. in Louisiana State University.

Law school and academic background

Gregory completed J.D. in Louisiana State University. Formal legal training is one signal of substantive knowledge — the day-to-day practice Gregory runs in Louisiana is where that training gets applied to real client questions.

Recognition

Awards, publications, and recognition of Gregory G. "Greg" Duplantis

Gregory has received 5 formal recognitions from bar associations, industry bodies, and peer-review services.

  • Lawyer of the Year — Energy Law (Lafayette)

    2026

  • Best Lawyers in America — Energy Law

    2026

  • Best Lawyers in America — Energy Regulatory Law

    2026

  • Best Lawyers in America — Natural Resources Law

    2026

  • Best Lawyers in America — Oil and Gas Law

    2026

Legal awards and honors

Lawyer of the Year — Energy Law (Lafayette) (2026). Best Lawyers in America — Energy Law (2026). Best Lawyers in America — Energy Regulatory Law (2026). Best Lawyers in America — Natural Resources Law (2026). Best Lawyers in America — Oil and Gas Law (2026).

Locations

Gregory G. "Greg" Duplantis's office in Lafayette

Gregory's primary office is at 1015 Saint John Street, Lafayette, Louisiana, 70501-6711. In-person meetings are by appointment; a phone intake usually comes first.

Main office

1015 Saint John Street

Lafayette, Louisiana 70501-6711

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Client feedback

Client reviews of Gregory G. "Greg" Duplantis

Gregory has not yet collected verified client reviews on LawyersListed. Reviews here are all from confirmed clients; anonymous ratings are moderated out.

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Hiring guide

How to hire Gregory G. "Greg" Duplantis — what to expect in your first consultation

Working with a new energy attorney should feel structured. Here's how the first two conversations with Gregory usually go, from the moment you request a consult to the day representation begins.

Consultation formats and pricing

Gregory charges for the initial consult. That fee is credited toward representation if you retain Gregory's office.

What to bring to your first meeting

Bring any documents you already have — police reports, medical records, filed pleadings, correspondence from an insurer, a copy of the contract at issue. If you're not sure, err on the side of bringing everything; Gregory will tell you what matters and what doesn't.

Questions to ask a energy attorney in Lafayette, Louisiana

A short list to run through before you commit: How many energy matters have you handled in the last year? What's your fee structure? Who else in the office will work on this? What's your realistic estimate of timeline and range of outcomes? How do I reach you between meetings?

Fees & payment

Fees, payment methods, and consultation options for Gregory

Gregory discusses fees during intake so the arrangement fits the matter. Contingency, hourly, and flat-fee options are all common in energy practice — ask which fits.

Hourly rates, contingency fees, and flat-fee options

Every energy matter is priced differently. Simple document review might be a flat fee. Injury litigation is often contingency. Complex commercial disputes usually run hourly with a retainer. Gregory confirms the model in the engagement letter before any work starts.

Payment methods and payment plans

Gregory's office accepts standard payment methods. Ask about payment plans if the retainer is a stretch — many energy practices work with clients on structured schedules.

Frequently asked

Frequently asked questions about Gregory G. "Greg" Duplantis

  • How much does it cost to hire Gregory for a energy case?

    Cost depends on the type of matter, the fee model (contingency, flat, hourly), and how contested the case becomes. Gregory walks through the likely range during the consult so there are no surprises.

  • Does Gregory offer a free consultation?

    Gregory charges for the initial consult; that fee is credited toward representation if you retain Gregory's office. Some energy attorneys offer free consults — check Gregory's current terms during booking.

  • How long do energy cases in Louisiana typically take?

    Simple energy matters can wrap in a few weeks; disputed cases can run 6–18 months from intake to resolution, longer if the matter goes to trial. Gregory gives a realistic estimate for your facts at the consult — vague answers here are a red flag.

  • Can Gregory take my case if I'm outside Lafayette?

    Gregory is licensed in Louisiana. Matters governed by Louisiana law are the natural fit. Out-of-state matters are handled case-by-case, sometimes with local co-counsel. Ask during intake — Gregory will tell you if the case is a fit or refer you to someone closer to your court.

  • What should I bring to my first meeting with Gregory?

    Bring every document that touches the dispute: contracts, correspondence, police or medical reports, filed pleadings, invoices, photographs, insurance letters. Also bring a written timeline of what happened, in your own words. Gregory will filter what matters — over-preparing at intake is always cheaper than needing a second meeting.

  • Is Gregory accepting new energy clients right now?

    Gregory's intake status shifts week to week. Submit the form; the office will confirm availability or refer the matter out.

Areas served

Energy attorneys serving Lafayette, New Orleans and Baton Rouge in Louisiana

Gregory handles energy matters throughout Louisiana. Each city below is a direct link into the search page for verified energy attorneys in that community.

More counsel

If Gregory's intake is full or the fit isn't right, these energy attorneys in Lafayette handle similar matters. Every profile below is verified and open to consultations.