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Jim has extensive experience serving energy industry clients, practicing before state and federal agencies including the Federal Energy Regulatory Commission (FERC) and the United States Court of Appeals for the D.C. Circuit. He has comprehensive knowledge of wholesale electricity markets and has served as national coordinating counsel for large-scale utility integrations and complex, multi-jurisdictional regulatory matters.

Jim’s experience includes representation of Independent System Operators and Regional Transmission Organizations, investor-owned utilities, merchant generators, and renewable energy developers. 

Chambers USA recognized Jim as a Leading Lawyer in Energy & Natural Resources in Indiana, ranked in Band 2 in 2023. A client providing feedback to Chambers USA stated, "Jim is a strategic thinker and a strong communicator."

Additionally, Jim served as outside general counsel for privately held Indiana businesses, advising them in general corporate matters, contract negotiations and litigation.

Prior to joining Calfee in 2021, Jim served as President of The Holsclaw Group, LLC, an Indiana-based law firm specializing in energy policy, regulatory compliance, corporate strategy and privately held business matters.

Jim earned his J.D. from the University of Cincinnati College of Law in 2001 and his B.A. in English from Butler University in 1998.

Honors & Recognitions

  • Chambers USA, Energy & Natural Resources, Band 2, Indiana (2023) 


J.D., University of Cincinnati College of Law, 2001

B.A., English, Butler University, 1998

Professional & Community

Professional & Community

Energy Bar Association, Midwest Chapter, Board Director

News & Events


Licensed In

  • Indiana
  • *Not admitted to practice in District of Columbia; practices before U.S. agencies, i.e., the Federal Energy Regulatory Commission (FERC)

"Jim is a strategic thinker and a strong communicator."

Chambers USA client quote

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