Rocky Mountain Power wants to hike electric rates again — by $116M

If you’re one of Rocky Mountain Power’s 144,511 customers in Wyoming, your monthly electricity bill may soon increase — again.
For the second year in a row, the utility — a division of Warren Buffet’s PacifiCorp — says it underestimated costs for coal and natural gas to fuel power plants and to buy electricity on the open market, and it wants to tap Wyoming ratepayers to make up the difference.
Rocky Mountain Power on Monday filed for a 12.3% rate increase that — if approved — would tap Wyoming customers for a one-time $86.4 million, mostly due to higher-than-expected fuel costs in 2023. If Wyoming regulators approve the full amount, the company’s typical residential customer will experience a 9.3% increase, or about $12 more to their monthly bill, beginning July 1 and lasting for 12 months, according to Rocky Mountain Power.