Aaron Worthman

Aaron Worthman



+1 (512) 975 7281

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Aaron Worthman, principal and leader of the power and utilities team, has been with Baker Tilly since 1998. Aaron specializes in serving Tribal, governmental and utility entities. His experience includes performing financial audits and agreed-upon procedure reviews as well as preparing rate studies, cost of service studies, rate designs and financial forecasts.

  • Manages financial audits of numerous Tribal, governmental and utility entities
  • Provides OMB Uniform Guidance compliance audits of federally funded programs
  • Reviews and tests internal controls of the administration of grant programs
  • Analyzes the financial impact of construction projects on utility customer rates, borrowing needs and operational results
  • Prepares electric, water, sewer and stormwater rate filings, cost of service studies and rate design
  • Testifies as an expert witness before regulatory agencies and local governing bodies to support utility rate adjustments
  • Prepares annual budgets and long-range financial forecasts for municipal utilities
  • Assists with negotiation of retail utility service agreements related to large industrial developments and intergovernmental agreements
  • American Institute of Certified Public Accountants (AICPA)
  • American Public Power Association (APPA)
  • Texas Public Power Association
  • Texas Society of Certified Public Accountants Austin Chapter
  • Wisconsin Institute of Certified Public Accountants (WICPA)
  • Speaks on accounting and financial reporting topics at national and regional conferences as well as at Baker Tilly sponsored seminars
  • Teaches utility education courses for the APPA
  • Authors nationally and regionally published articles on utility regulation and accounting issues
  • AICPA, national governmental and not-for-profit training session
  • Baker Tilly, Electric cost of service and rate design
  • Baker Tilly, Single audit training sessions
  • Baker Tilly, Utility re-engineering audit update
  • Baker Tilly, Utility training seminar
  • WICPA, Governmental Financial Management Update
  • Wisconsin Rural Water Association, The business of running your utility


Madison, WI


University of Wisconsin ‒ Eau Claire
Bachelor of Business Administration

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