Avista Makes Annual Price Adjustment Filings in Idaho

SPOKANE, Wash., July 31, 2026 (GLOBE NEWSWIRE) -- Avista (NYSE: AVA) has made annual filings with the Idaho Public Utilities Commission (IPUC or Commission) that have no impact on Avista’s earnings. These filings seek to true-up the level of costs in customer rates with the actual level incurred by the Company.

Natural Gas Adjustment Filings The Company filed three annual natural gas requests that, if approved, would update natural gas rates starting November 1, 2026 as shown below: 1. Purchased Gas Cost Adjustment (PGA): a decrease of approximately $2.5 million or 3.0% 2. Fixed Cost Adjustment (FCA): an increase of approximately $2.4 million or 2.8% 3. Natural Gas Energy Efficiency Adjustment: a decrease of approximately $1.4 million or 1.6% Electric Adjustment Filings The Company filed three annual electric requests that, if approved, would update electric rates starting November 1, 2026 as shown below: 1. Power Cost Adjustment (PCA): an increase of approximately $14.6 million or 4.2% 2. Fixed Cost Adjustment (FCA): an increase of approximately $4.0 million or 1.2% 3. Bonneville Power Administration Residential Exchange (ResEx) Program: a decrease of approximately $0.3 million or 0.1% Customer Bills Resulting from these Filings If the natural gas PGA, Energy Efficiency and FCA filings are approved, residential natural gas customers in Idaho using an average of 66 therms per month would see their monthly bills decrease from $59.28 to $58.38, a decrease of $0.90 per month, or approximately 1.5%. The proposed natural gas rate change would be effective Nov. 1, 2026.