Idaho Power Files 20-Year Plan to Add 2.15 GW Renewable Capacity

Idaho Power has filed its 2025 Integrated Resource Plan (IRP), outlining a comprehensive 20-year strategy to meet a projected 45% increase in peak electricity demand, equivalent to 1,700 megawatts, driven by population growth and expanding commercial and industrial activity. The plan prioritizes adding 2.15 gigawatts of renewable energy capacity, including solar and wind, alongside battery storage, natural gas, and energy efficiency measures, aiming for a least-cost, reliable, and wildfire-risk-reducing resource portfolio. Significant infrastructure projects such as the Boardman to Hemingway and Southwest Intertie 500-kilovolt transmission lines are highlighted to enhance regional grid connectivity and support demand growth. Nearly 1,000 megawatts of the anticipated demand increase is expected within the next five years, surpassing the capacity of the company's largest current resource, the Brownlee hydropower plant. Idaho Power emphasizes maintaining grid reliability while accommodating new large customers, who are required to finance their interconnection costs. The plan, currently under regulatory review in Idaho and Oregon, reflects Idaho Power's commitment to serving customers with safe, affordable, and clean energy through 2045.