
Jon N. Bonsall, Energy Attorney in Boston, Massachusetts
Over 53 years of legal practice · focused on Energy, Formation, and Government · 5.0/5 rating from 1 verified client review
PartneratKeegan Werlin LLP
Boston, MA
Practicing energy in Boston since 1973.
- 53+
- Years practicing
- 5.0 ★
- 1 client review
- 2
- Bar admissions
Practices in
Are you Jon N. Bonsall?
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Quick answer
Jon N. Bonsall is a partner based in Boston, MA. The practice focuses on Energy, Formation, and Government. Jon has over 53 years of legal experience. Currently practicing at Keegan Werlin LLP. Rated 5.0 out of 5 from 1 client review.
- Based in
- Boston, MA
- Experience
- over 53 years
- Known for
- Energy · Formation · Government
- Handles Energy, Formation, and Government matters from Boston, MA.
- Over 53 years of practice as a licensed attorney.
- Recognized with AV Preeminent.
About Jon N. Bonsall: Jon N. Bonsall is a partner based in Boston, MA. The practice focuses on Energy, Formation, and Government. Jon has over 53 years of legal experience. Currently practicing at Keegan Werlin LLP. Rated 5.0 out of 5 from 1 client review.
Areas of practice
Practice areas handled by Jon N. Bonsall
Jon concentrates on energy, formation, government, and litigation. Each area below outlines the kind of case Jon handles, typical outcomes to expect, and how the intake process starts.
Energy
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Formation
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Government
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Litigation
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Energy cases in Boston, Massachusetts
Jon takes energy matters in Boston, Massachusetts. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Jon agrees to represent you.
Formation cases in Boston, Massachusetts
Jon takes formation matters in Boston, Massachusetts. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Jon agrees to represent you.
Government cases in Boston, Massachusetts
Jon takes government matters in Boston, Massachusetts. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Jon agrees to represent you.
Litigation cases in Boston, Massachusetts
Jon takes litigation matters in Boston, Massachusetts. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Jon agrees to represent you.
Biography
About Jon N. Bonsall — Over 53 years of Massachusetts energy experience
Jon N. Bonsall is a partner based in Boston, MA. The practice focuses on Energy, Formation, and Government. Jon has over 53 years of legal experience. Currently practicing at Keegan Werlin LLP. Rated 5.0 out of 5 from 1 client review.
Jon N. Bonsall is a lawyer practicing energy / utilities, corporate / incorporation, litigation and 2 other areas of law. Jon received a B.A. degree from Holy Cross College in 1970, and has been licensed for 53 years. Jon practices at Keegan Werlin LLP in Boston, MA.
Working with Jon on a energy matter
Jon N. Bonsall is a lawyer practicing energy / utilities, corporate / incorporation, litigation and 2 other areas of law. Jon received a B.A. degree from Holy Cross College in 1970, and has been licensed for 53 years. Jon practices at Keegan Werlin LLP in Boston, MA.
Clients Jon works with
Jon reviews new inquiries case-by-case for energy, formation, and government matters in Boston and the surrounding Massachusetts area.
Credentials
Jon N. Bonsall's legal education and bar admissions
Boston College Law School
J.D. · 1973
Holy Cross College
B.A. History · 1970
Jurisdictions
Jon's state bar admissions
U.S. District Court,
1974 · ACTIVE
Massachusetts
1973 · ACTIVE
Jon studied at J.D. in Boston College Law School and B.A. History in Holy Cross College.
Law school and academic background
Jon completed J.D. in Boston College Law School and B.A. History in Holy Cross College. Formal legal training is one signal of substantive knowledge — the day-to-day practice Jon runs in Massachusetts is where that training gets applied to real client questions.
Recognition
Awards, publications, and recognition of Jon N. Bonsall
Jon has received 1 formal recognition from bar associations, industry bodies, and peer-review services.
AV Preeminent
Legal awards and honors
AV Preeminent.
Locations
Jon N. Bonsall's office in Boston
Jon's primary office is at 265 Franklin St., Boston, MA, 02110-3113. In-person meetings are by appointment; a phone intake usually comes first.
Client feedback
Client reviews of Jon N. Bonsall — 5.0/5 rating from 1 verified client review
Every review below is from a verified client of Jon. Reviews cover communication, case outcome, and value — the three signals that matter most when comparing energy attorneys in Boston.
5.0
1 client review
Client ratings are sourced from public records and editorial research. Reviews on LawyersListed are accepted from verified clients once Jon N. Bonsall claims this profile.
Read all reviewsHiring guide
How to hire Jon N. Bonsall — what to expect in your first consultation
Working with a new energy attorney should feel structured. Here's how the first two conversations with Jon usually go, from the moment you request a consult to the day representation begins.
Consultation formats and pricing
Jon charges for the initial consult. That fee is credited toward representation if you retain Jon'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; Jon will tell you what matters and what doesn't.
Questions to ask a energy attorney in Boston, Massachusetts
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 Jon
Jon 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. Jon confirms the model in the engagement letter before any work starts.
Payment methods and payment plans
Jon'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 Jon N. Bonsall
How much does it cost to hire Jon for a energy case?
Cost depends on the type of matter, the fee model (contingency, flat, hourly), and how contested the case becomes. Jon walks through the likely range during the consult so there are no surprises.
Does Jon offer a free consultation?
Jon charges for the initial consult; that fee is credited toward representation if you retain Jon's office. Some energy attorneys offer free consults — check Jon's current terms during booking.
How long do energy cases in Massachusetts 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. Jon gives a realistic estimate for your facts at the consult — vague answers here are a red flag.
Can Jon take my case if I'm outside Boston?
Jon is licensed in Massachusetts. Matters governed by Massachusetts law are the natural fit. Out-of-state matters are handled case-by-case, sometimes with local co-counsel. Ask during intake — Jon 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 Jon?
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. Jon will filter what matters — over-preparing at intake is always cheaper than needing a second meeting.
Is Jon accepting new energy clients right now?
Jon'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 Boston, Cambridge and Worcester in Massachusetts
Jon handles energy matters throughout Massachusetts. Each city below is a direct link into the search page for verified energy attorneys in that community.
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If Jon's intake is full or the fit isn't right, these energy attorneys in Boston handle similar matters. Every profile below is verified and open to consultations.





