The numbers
Rocky Mountain Power customers in Utah currently pay around $0.140/kWh on average. At the historical escalation rate of about 6.0% a year, that rate compounds quickly if it holds:
| Today | In 5 years | In 10 years | In 20 years |
|---|---|---|---|
| $0.140 | $0.187 | $0.251 | $0.449 |
Projection based on Utah's historical rate escalation of 6.0%/yr, compounded annually. Not a guarantee β actual future rates depend on regulatory decisions.
That's a 221% increase over 20 years if the trend continues β meaning the same household usage that costs $140 today per 1,000 kWh would cost roughly $449 at that point.
What's actually driving the increase
Utah is one of the fastest-growing states in the country, and new data centers and industrial users along the Wasatch Front are adding significant load to the grid. Rocky Mountain Power has filed for repeated rate increases to fund new generation and transmission to keep up with that demand growth.
Utahβs dry, high-elevation climate gives it some of the best solar resource of any legal-status state on this list β hot, cloudless summer afternoons are exactly when a plug-in solar system produces the most power.
How residents are fighting back
You can't vote down a rate case yourself, but you can reduce how much of your bill is exposed to it. Utah's HB 340 now allows a permit-free, no-utility-approval plug-in solar system up to 1200W β already in effect. Most plug-in systems this size don't qualify for net metering, so the strategy that actually works is maximizing self-consumption β using the power as you generate it, rather than exporting it back to the grid at a rate that keeps rising anyway.
Bottom line
Salt Lake City rates are going up, and the drivers behind it β fast population growth and rising industrial/data-center demand β aren't going away soon. Every kWh you generate yourself is a kWh permanently insulated from the next rate case.
Further reading
Sources
- Short-Term Energy Outlook β U.S. Energy Information Administration
- Electricity Data (historical retail prices by state) β U.S. EIA
- Electricity prices, demand to continue rising in 2026: EIA β Utility Dive
- State Electricity Profiles (average prices & rankings by state) β U.S. EIA
- Local Climate Data for Denver, CO (sunshine & temperature normals) β National Weather Service (NOAA)
- PJM capacity prices hit record high as grid operator falls short of reliability target β Utility Dive
- Amid high heat, power demand in PJM territory could set records β Maryland Matters
- Population Growth Reported Across U.S. Regions (Vintage 2025 estimates) β U.S. Census Bureau
- The Data Center Capital of the World Is in Virginia β Governing