Utility contacts to verify before work
Investor-owned utility
Rocky Mountain Power Wyoming
- Service area
- Investor-owned electric utility serving Wyoming communities including Rock Springs, Casper-area customers, Evanston, and connected service territories.
- Contractor / service coordination
- https://www.rockymountainpower.net/
- 811 / call before you dig
- https://www.onecallofwyoming.com/
Electric co-op
High Plains Power
- Service area
- Member-owned electric cooperative serving central and western Wyoming rural communities, ranches, and small towns.
- Contractor / service coordination
- https://www.highplainspower.org/
- 811 / call before you dig
- https://www.onecallofwyoming.com/
Electric co-op
Powder River Energy Corporation
- Service area
- Member-owned electric cooperative serving northeast Wyoming communities, energy facilities, ranches, and rural service areas.
- Contractor / service coordination
- https://www.precorp.coop/
- 811 / call before you dig
- https://www.onecallofwyoming.com/
Gas utility
Black Hills Energy Wyoming
- Service area
- Natural gas and electric utility serving Cheyenne, Casper, Gillette, and other Wyoming service territories depending on the address.
- Contractor / service coordination
- https://www.blackhillsenergy.com/
- 811 / call before you dig
- https://www.onecallofwyoming.com/
Water utility
Riverton Public Works Water Division
- Service area
- Municipal water utility serving Riverton customers with public water distribution, service connections, and local utility coordination.
- Contractor / service coordination
- https://www.rivertonwy.gov/departments/public_works/water.php
- 811 / call before you dig
- https://www.onecallofwyoming.com/
When to call which utility
Use this Wyoming utility map before a job changes a meter, service mast, service drop, gas appliance, water line, trench, driveway, sewer lateral, or exterior structure. For electric outages, meter pulls, temporary power, service upgrades, underground-to-overhead changes, or a panel job that requires a utility disconnect, start with the electric utility assigned to the address: Rocky Mountain Power Wyoming, High Plains Power and Powder River Energy Corporation. Rural addresses often sit in cooperative territory even when the nearest city is served by an investor-owned or municipal utility, so verify the premise before an electrician schedules the cutover. For natural-gas odors, hit lines, meter relocations, pressure questions, or appliance conversions, stop work and call the gas utility or 911 from a safe distance when there is an immediate leak; use Black Hills Energy Wyoming for the listed gas distribution territory. Water utilities such as Riverton Public Works Water Division coordinate taps, meters, backflow requirements, main shutoffs, hydrant use, and service-line ownership questions. Municipal utilities may bundle electric, gas, water, wastewater, and stormwater, so one counter can control several approvals. Before any excavation, boring, fence post, sign, tree planting, drainage, sewer, or water-service work, file the 811 ticket through https://www.onecallofwyoming.com/ and wait for marks or positive response. The utility marks public facilities; the contractor still needs private locating for owner-installed lighting, irrigation, propane, septic, yard drains, and lines beyond the meter.
811 comes before utility-side work
File a locate request before trenching, boring, planting, fencing, drainage work, sewer work, or water-service changes. Utility marks do not replace private locating on owner-installed lines.
Source: ProFix Editorial Team. Last updated 2026-06-09. Utility territories can change at parcel boundaries; verify the premise address with the utility and local 811 system before scheduling work.