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Electric Industry



The Commission regulates four investor owned electric utilities that operate in Wyoming. In addition, the Commission also has regulatory authority over eighteen retail rural electric cooperatives that provide electric service within the state.

The PSC has the following primary duties regarding the regulation of electric utilities:

  • Hearing rate cases and approving rates and tariffs for the companies
  • Reviewing, analyzing and hearing electric utility applications to pass-on wholesale cost increases in the cost of electricity
  • Reviewing integrated resource plans for large electric utilities
  • Granting certificates of public convenience and necessity for large facilities, including power plants and some transmission lines
  • Establishing accounting and depreciation procedures for utilities
  • Approving mergers, acquisitions and transactions between companies
  • Approving the issuance of securities and creation of liens by the utility Mediating consumer complaints regarding electric service issues

Integrated Resource Plan (IRP) Filings

An Integrated Resource Plan (IRP) is a recurring planning process undertaken by a public utility to identify the preferred mix of supply and demand side resources that will meet projected customer demand, provide service reliability and resource diversity at the least possible cost.

Commission Rule Chapter 3, Section 33 - Integrated Resource Plan (IRP) pertains to Integrated Resource Planning. It states: "Each utility serving in Wyoming that files an IRP in another jurisdiction shall file that IRP with the Commission. The Commission may require any utility to file an IRP."

Electric Integrated Resource Plan (IRP) Guidelines


These downloadable files are available as Adobe Acrobat pdf files.
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Electric Utilities
Contact / Address Update Form
Required Filings Cover Sheet