Thomas O’Donnell

Holland & Hart LLP

Holland & Hart’s managing partner since 2009, Thomas O’Donnell is responsible for guiding the law firm’s daily operations. He works closely with the firm chair and members of Holland & Hart’s management committee to conduct the business of the firm in alignment with its strategic goals and objectives.

In his legal practice, Tom represents natural gas distribution companies and pipelines in matters before a variety of state public utility commissions throughout the Mountain West, as well as before the Federal Energy Regulatory Commission. He has also represented large electric consumers, independent power producers, and renewable energy developers before such agencies.

Tom has represented clients before the Colorado Supreme Court and other state and federal courts in conjunction with a variety of energy and public utility matters. Having authored several pieces of Colorado legislation, he is well positioned to assist clients in the legislative arena.

Tom has significant experience with a wide range of traditional regulatory matters, including general rate cases, rulemaking and investigatory proceedings, cost adjustment mechanisms, territory disputes, service area and facility certification, and municipal franchise matters.

Tom also has experience in a variety of emerging issues in the electric and natural gas utility industries, including those relating to alternative forms of regulation, as well as those surrounding utility mergers and acquisitions and related regulatory approvals.

He has assisted clients in matters relating to the electric industry restructuring, including the determination of transition costs; the structure of retail customer choice; and the scope of unbundled services, including insuring comparability of service and equitable access to incumbent facilities.

In addition, Tom has assisted clients in the electric independent power producer arena in the negotiation and drafting of power purchase agreements for the sale of capacity and energy to utilities as well as in matters relating to the interconnection of generation facilities to the electric transmission grid.


  • Vermont Law School, J.D., 1985
  • Southern Methodist University, B.A., 1980

Bar Admissions : Colorado

Professional and Civic Affiliations:

  • Member, American Bar Association
  • Member, Colorado Bar Association
  • Member, Boys & Girls Clubs of America, Rocky Mountain Area Council
  • Member, Board of Directors, Boys & Girls Clubs of Metro Denver
  • Member, Board of Litigation, Mountain States Legal Foundation


Rate : $$$

What types of cases Attorney Thomas O'Donnell & Holland & Hart LLP can handle?
Holland & Hart LLP can handle cases related to laws concerning Business, Project & Equipment Finance, Energy Utilities & Environmental. We manually verify each attorney’s practice areas before approving their profiles and reviews on our website.
Where is Holland & Hart LLP located?
Holland & Hart LLP is located at 555 17th St #3200, Denver, CO 80202, USA. You can reach out to Holland & Hart LLP using their phone line 303.295.8291. You can also check their website
How much would it cost to hire Holland & Hart LLP?
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Holland & Hart LLP
555 17th St #3200, Denver, CO 80202, USA
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