Frank H. Hackmann, Energy Attorney in Chicago, Illinois
Over 54 years of legal practice · focused on Energy, Environmental, and Government · 5.0/5 rating from 1 verified client review
PartneratDentons US LLP
Chicago, IL
Practicing energy in Chicago since 1972.
- 54+
- Years practicing
- 5.0 ★
- 1 client review
- 2
- Bar admissions
Practices in
Are you Frank H. Hackmann?
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Quick answer
Frank H. Hackmann is a partner based in Chicago, IL. The practice focuses on Energy, Environmental, and Government. Frank has over 54 years of legal experience. Currently practicing at Dentons US LLP. Rated 5.0 out of 5 from 1 client review.
- Based in
- Chicago, IL
- Experience
- over 54 years
- Known for
- Energy · Environmental · Government
- Handles Energy, Environmental, and Government matters from Chicago, IL.
- Over 54 years of practice as a licensed attorney.
- Recognized with AV Preeminent.
About Frank H. Hackmann: Frank H. Hackmann is a partner based in Chicago, IL. The practice focuses on Energy, Environmental, and Government. Frank has over 54 years of legal experience. Currently practicing at Dentons US LLP. Rated 5.0 out of 5 from 1 client review.
Areas of practice
Legal matters Frank takes on
Frank concentrates on energy, environmental, and government. Each area below outlines the kind of case Frank handles, typical outcomes to expect, and how the intake process starts.
Energy
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Environmental
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Government
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Energy cases in Chicago, Illinois
Frank takes energy matters in Chicago, Illinois. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Frank agrees to represent you.
Environmental cases in Chicago, Illinois
Frank takes environmental matters in Chicago, Illinois. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Frank agrees to represent you.
Government cases in Chicago, Illinois
Frank takes government matters in Chicago, Illinois. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Frank agrees to represent you.
Biography
Meet Frank H. Hackmann — energy lawyer in Chicago
Frank H. Hackmann is a partner based in Chicago, IL. The practice focuses on Energy, Environmental, and Government. Frank has over 54 years of legal experience. Currently practicing at Dentons US LLP. Rated 5.0 out of 5 from 1 client review.
Frank H. Hackmann is a lawyer practicing environmental law, energy law, administrative law. Frank received a degree from University of Illinois in 1967, and has been licensed for 54 years. Frank practices at Dentons US LLP in Chicago, IL and 1 other location.
Frank's approach to energy cases
Frank H. Hackmann is a lawyer practicing environmental law, energy law, administrative law. Frank received a degree from University of Illinois in 1967, and has been licensed for 54 years. Frank practices at Dentons US LLP in Chicago, IL and 1 other location.
The kind of cases Frank takes
Frank reviews new inquiries case-by-case for energy, environmental, and government matters in Chicago and the surrounding Illinois area.
Credentials
Education, bar admissions, and languages
St. Louis University
J.D. · 1972
University of Illinois
B.S. Ch. · 1967
Jurisdictions
Frank's state bar admissions
Illinois
1973 · ACTIVE
Missouri
1972 · ACTIVE
Frank studied at J.D. in St. Louis University and B.S. Ch. in University of Illinois.
Law school and academic background
Frank completed J.D. in St. Louis University and B.S. Ch. in University of Illinois. Formal legal training is one signal of substantive knowledge — the day-to-day practice Frank runs in Illinois is where that training gets applied to real client questions.
Recognition
Recognition and thought leadership
Frank has received 1 formal recognition from bar associations, industry bodies, and peer-review services.
AV Preeminent
Legal awards and honors
AV Preeminent.
Locations
Frank H. Hackmann's office in Chicago
Frank's primary office is at Sears Tower, Suite 7800, 233 S. Wacker Drive, Chicago, IL, 60606-6459. In-person meetings are by appointment; a phone intake usually comes first.
Dentons US LLP
Sears Tower, Suite 7800, 233 S. Wacker Drive
Chicago, IL 60606-6459
Open in Google MapsClient feedback
Client reviews of Frank H. Hackmann — 5.0/5 rating from 1 verified client review
Every review below is from a verified client of Frank. Reviews cover communication, case outcome, and value — the three signals that matter most when comparing energy attorneys in Chicago.
5.0
1 client review
Client ratings are sourced from public records and editorial research. Reviews on LawyersListed are accepted from verified clients once Frank H. Hackmann claims this profile.
Read all reviewsHiring guide
How to hire Frank H. Hackmann — what to expect in your first consultation
Working with a new energy attorney should feel structured. Here's how the first two conversations with Frank usually go, from the moment you request a consult to the day representation begins.
Consultation formats and pricing
Frank charges for the initial consult. That fee is credited toward representation if you retain Frank'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; Frank will tell you what matters and what doesn't.
Questions to ask a energy attorney in Chicago, Illinois
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 Frank
Frank 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. Frank confirms the model in the engagement letter before any work starts.
Payment methods and payment plans
Frank'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 Frank H. Hackmann
How much does it cost to hire Frank for a energy case?
Cost depends on the type of matter, the fee model (contingency, flat, hourly), and how contested the case becomes. Frank walks through the likely range during the consult so there are no surprises.
Does Frank offer a free consultation?
Frank charges for the initial consult; that fee is credited toward representation if you retain Frank's office. Some energy attorneys offer free consults — check Frank's current terms during booking.
How long do energy cases in Illinois 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. Frank gives a realistic estimate for your facts at the consult — vague answers here are a red flag.
Can Frank take my case if I'm outside Chicago?
Frank is licensed in Illinois. Matters governed by Illinois law are the natural fit. Out-of-state matters are handled case-by-case, sometimes with local co-counsel. Ask during intake — Frank 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 Frank?
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. Frank will filter what matters — over-preparing at intake is always cheaper than needing a second meeting.
Is Frank accepting new energy clients right now?
Frank'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 Chicago, Springfield and Northbrook in Illinois
Frank handles energy matters throughout Illinois. Each city below is a direct link into the search page for verified energy attorneys in that community.
More counsel
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If Frank's intake is full or the fit isn't right, these energy attorneys in Chicago handle similar matters. Every profile below is verified and open to consultations.





