Interconnection Guidelines

July 24, 2020


Wyoming's net-metering law includes basic interconnection requirements for systems up to 25 kilowatts (kW) in capacity that generate electricity using solar, wind, hydropower or biomass resources. However, the Wyoming Public Service Commission (PSC) has not established separate interconnection rules. There is no limit on overall enrollment specified by the law. Systems must comply with the National Electrical Code (NEC), Institute of Electrical and Electronic Engineers (IEEE), and Underwriters Laboratories (UL) safety and equipment standards. Customers must install an external disconnect switch at their own expense. The PSC may require additional controls and testing.

Additional liability insurance is not addressed by the law, although the PSC has specifically prohibited certain REAs from imposing minimum insurance requirements on customers, viewing such requirements as barriers to interconnection. In addition, the widespread use of the Rocky Mountain Power agreement -- which contains no such requirement -- as a model suggests that additional liability insurance is generally not required.

Program Overview

Implementing Sector: State
Category: Regulatory Policy
State: Wyoming
Incentive Type: Interconnection
Web Site:
Start Date:
Eligible Renewable/Other Technologies:
  • Solar Photovoltaics
  • Wind (All)
  • Biomass
  • Hydroelectric
  • Wind (Small)
Applicable Utilities: Investor-owned utilities, electric cooperatives, irrigation districts
System Capacity Limit: 25 kW
Standard Agreement: No
Insurance Requirements: Not addressed
External Disconnect Switch: Required
Net Metering Required: Yes


Name: Wyo. Stat. § 37-16-101 et seq.
Date Enacted: 02/22/2001 (amended 2003)
Effective Date: 07/01/2001


Name: Christopher Petrie
Organization: Wyoming Public Service Commission
Address: 700 West 1st Street
Cheyenne WY 82002
Phone: (307) 777-7427

This information is sourced from DSIRE; the most comprehensive source of information on incentives and policies that support renewables and energy efficiency in the United States. Established in 1995, DSIRE is operated by the N.C. Clean Energy Technology Center at N.C. State University.