Interconnection Guidelines (Wyoming)

From Open Energy Information

Last modified on February 12, 2015.

Rules Regulations Policies Program

Place Wyoming
Name Interconnection Guidelines
Incentive Type Interconnection
Applicable Sector Commercial, Industrial, Residential
Eligible Technologies Biomass, Hydroelectric, Photovoltaics, Wind
Active Incentive Yes
Implementing Sector State/Territory
Energy Category Renewable Energy Incentive Programs
Applicable Utilities Investor-owned utilities, electric cooperatives, irrigation districts

External Disconnect Switch Required

Insurance Requirements Not addressed

Net Metering Required Yes

Standard Agreement No
System Capacity Limit 25 kW

Date added to DSIRE 2003-07-01
Last DSIRE Review 2012-08-22

References DSIRE[1]


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.

Rocky Mountain Power (PacifiCorp) has developed an interconnection application for net metering. All other electric utilities in Wyoming -- investor-owned utilities and rural electric associations (REAs) alike -- use an interconnection agreement modeled on Rocky Mountain Power's interconnection agreement, according to the PSC. Click here to view PacifiCorp's net-metering tariff (Schedule 135).

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.

Incentive Contact

Contact Name Christopher Petrie
Department Wyoming Public Service Commission
Address 700 West 1st Street
Place Cheyenne, Wyoming
Zip/Postal Code 82002
Phone (307) 777-7427
Fax (307) 777-5700

Authorities (Please contact the if there are any file problems.)

Authority 1: Wyo. Stat. § 37-16-101 et seq.
Date Effective 2001-07-01
Date Enacted 02/22/2001 (amended 2003)

  • Incentive and policy data are reviewed and approved by the N.C. Solar Center's DSIRE project staff.[1]


  1. 1.0 1.1  "Database of State Incentives for Renewables and Efficiency (DSIRE)"