John P. Williams

John P. Williams, Energy Attorney in Washington, District of Columbia

Over 46 years of legal practice · focused on Energy, General, and International · 5.0/5 rating from 1 verified client review

Of CounselatDuncan & Allen

Washington, DC

Practicing energy in Washington since 1980.

46+
Years practicing
5.0 ★
1 client review
9
Bar admissions

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Quick answer

John P. Williams is an of counsel based in Washington, DC. The practice focuses on Energy, General, and International. John has over 46 years of legal experience. Currently practicing at Duncan & Allen. Rated 5.0 out of 5 from 1 client review.

Based in
Washington, DC
Experience
over 46 years
Known for
Energy · General · International
  • Handles Energy, General, and International matters from Washington, DC.
  • Over 46 years of practice as a licensed attorney.
  • Recognized with AV Preeminent.

About John P. Williams: John P. Williams is an of counsel based in Washington, DC. The practice focuses on Energy, General, and International. John has over 46 years of legal experience. Currently practicing at Duncan & Allen. Rated 5.0 out of 5 from 1 client review.

Areas of practice

John's practice areas in Washington

John concentrates on energy, general, international, and litigation. Each area below outlines the kind of case John handles, typical outcomes to expect, and how the intake process starts.

Energy cases in Washington, District of Columbia

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

General cases in Washington, District of Columbia

John takes general matters in Washington, District of Columbia. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before John agrees to represent you.

International cases in Washington, District of Columbia

John takes international matters in Washington, District of Columbia. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before John agrees to represent you.

Litigation cases in Washington, District of Columbia

John takes litigation matters in Washington, District of Columbia. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before John agrees to represent you.

Biography

John P. Williams, energy attorney serving Washington

John P. Williams is an of counsel based in Washington, DC. The practice focuses on Energy, General, and International. John has over 46 years of legal experience. Currently practicing at Duncan & Allen. Rated 5.0 out of 5 from 1 client review. John works from Washington, District of Columbia and takes on energy matters across the region.

Stillman Prize, 1976. Senior Editor, Moot Court Board, 1978-1979. Author: "Global Trends and Tribulations in Mining Regulation", Journal of Energy and Natural Resources Law, December 2012; "International Best Practice in Mining: Who Decides and How - And How Does It Impact Law Development?" Georgetown Journal of International Law, Summer 2008; Legal Reform in Mining: Past, Present, Future and The Latin American Mining Law Model in International and Comparative Mineral Law and Policy (The Hague, Kluwer Law International, 2005). Co-author: The Potential for Mining Investment in Transition Economy Countries of East and Central Asia (London, Mining Journal, 2003); Review of Legal and Fiscal Frameworks for Exploration and Mining (London, Mining Journal 2001). Contributor: Mining Sector Reform and Investment: Results of a Global Survey (London, Mining Journal 2001). Author: "Chapter II: Legal and Fiscal Aspects of Mining Regulation in Latin America," A Mining Strategy for Latin America and the Caribbean, World Bank Technical Paper No. 345 (Washington, D.C. 1996); "Wheeling & Dealing: FERC's Evolving Approach to Electric Utility Mergers," The Electricity Journal, August/September, 1989. Member, Rocky Mountain Mineral Law Foundation.

John's approach to energy cases

Stillman Prize, 1976. Senior Editor, Moot Court Board, 1978-1979. Author: "Global Trends and Tribulations in Mining Regulation", Journal of Energy and Natural Resources Law, December 2012; "International Best Practice in Mining: Who Decides and How - And How Does It Impact Law Development?" Georgetown Journal of International Law, Summer 2008; Legal Reform in Mining: Past, Present, Future and The…

Clients John works with

John reviews new inquiries case-by-case for energy, general, and international matters in Washington and the surrounding District of Columbia area.

Credentials

Credentials — where John studied and practices

  • New York University

    J.D. · 1979

  • Harvard University

    A.B. Princeton · 1971

Jurisdictions

John's state bar admissions

  • Maryland

    2012 · ACTIVE

  • Virginia

    2011 · ACTIVE

  • U.S. Court of Appeal

    2000 · ACTIVE

  • U.S. Claims Court

    1998 · ACTIVE

  • U.S. Supreme Court

    1990 · ACTIVE

  • U.S. Court of Appeal

    1989 · ACTIVE

  • U.S. Court of Intern

    1987 · ACTIVE

  • District of Columbia

    1986 · ACTIVE

  • New York

    1980 · ACTIVE

John studied at J.D. in New York University and A.B. Princeton in Harvard University.

Law school and academic background

John completed J.D. in New York University and A.B. Princeton in Harvard University. Formal legal training is one signal of substantive knowledge — the day-to-day practice John runs in District of Columbia is where that training gets applied to real client questions.

Recognition

John's legal honors and published work

John has received 1 formal recognition from bar associations, industry bodies, and peer-review services.

  • AV Preeminent

Legal awards and honors

AV Preeminent.

Affiliations

John's professional memberships and bar associations

  • The District of Columbia Bar American Bar Association

    Member, Section of International Law and Practice Chair, International Energy and Resources Committee, 1997-1999, Section of Environment, Energy and Resources) Energy Bar Association International Bar Association (Secretary-Treasurer, Power Law Committee, · membership

Locations

John P. Williams's office in Washington

John's primary office is at 1730 Rhode Island Avenue N.W., Suite 700, Washington, DC, 20036. In-person meetings are by appointment; a phone intake usually comes first.

Main office

Duncan & Allen

1730 Rhode Island Avenue N.W., Suite 700

Washington, DC 20036

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Client feedback

Client reviews of John P. Williams — 5.0/5 rating from 1 verified client review

Every review below is from a verified client of John. Reviews cover communication, case outcome, and value — the three signals that matter most when comparing energy attorneys in Washington.

5.0

1 client review

Client ratings are sourced from public records and editorial research. Reviews on LawyersListed are accepted from verified clients once John P. Williams claims this profile.

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Hiring guide

How to hire John P. Williams — what to expect in your first consultation

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

Consultation formats and pricing

John charges for the initial consult. That fee is credited toward representation if you retain John'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; John will tell you what matters and what doesn't.

Questions to ask a energy attorney in Washington, District of Columbia

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 John

John 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. John confirms the model in the engagement letter before any work starts.

Payment methods and payment plans

John'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 John P. Williams

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

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

  • Does John offer a free consultation?

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

  • How long do energy cases in District of Columbia 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. John gives a realistic estimate for your facts at the consult — vague answers here are a red flag.

  • Can John take my case if I'm outside Washington?

    John is licensed in District of Columbia. Matters governed by District of Columbia law are the natural fit. Out-of-state matters are handled case-by-case, sometimes with local co-counsel. Ask during intake — John 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 John?

    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. John will filter what matters — over-preparing at intake is always cheaper than needing a second meeting.

  • Is John accepting new energy clients right now?

    John'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 Washington and Belize City in District of Columbia

John handles energy matters throughout District of Columbia. Each city below is a direct link into the search page for verified energy attorneys in that community.