PacifiCorp Files Flawed 2025 Energy Plan Update

Utility doubles down on costly energy sources despite rising household costs

Apr. 1, 2026 at 12:00am

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PacifiCorp, the parent company of Rocky Mountain Power, has filed an update to its 2025 Integrated Resource Plan that environmental advocates say doubles down on expensive energy sources despite rising costs for households in the region.

Why it matters

PacifiCorp's energy plan plays a major role in determining the electricity rates and fuel mix for millions of customers across Utah, Wyoming, and other Western states. Critics argue the utility's continued reliance on costly fossil fuels will further burden families already struggling with high energy bills.

The details

According to the Sierra Club, PacifiCorp's updated plan fails to adequately incorporate renewable energy and energy efficiency measures that could lower costs for consumers. Instead, the utility is proposing to invest heavily in natural gas and other fossil fuel-based generation.

  • PacifiCorp filed the updated 2025 Integrated Resource Plan on March 31, 2026.

The players

PacifiCorp

The parent company of Rocky Mountain Power, a major utility serving customers across Utah, Wyoming, and other Western states.

Sierra Club

An environmental advocacy organization that has criticized PacifiCorp's energy plan update.

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What they’re saying

“PacifiCorp's plan doubles down on expensive energy sources despite rising costs for households in the region.”

— Amy Dominguez, Sierra Club representative

What’s next

The updated 2025 Integrated Resource Plan will be reviewed by state utility regulators in the coming months.

The takeaway

PacifiCorp's continued reliance on fossil fuels in its energy plan update raises concerns about the utility's commitment to providing affordable and sustainable electricity for its customers.