Avista(AVA) - 2025 Q3 - Quarterly Results

Exhibit 99.1 Contact: Investors: Stacey Walters (509) 495-2046 stacey.walters@avistacorp.com Media: Lena Funston (509) 495-8090 lena.funston@avistacorp.com Avista 24/7 Media Access (509) 495-4174 Avista Corp. Reports Strong Q3 2025 Financial Results, Confirms 2025 Earnings Guidance Analysis of 2025 Consolidated Earnings SPOKANE, Wash. – Nov. 5, 2025, 4:05 a.m. PST: Avista Corp. (NYSE: AVA) today reported third quarter 2025 financial results. Third quarter net income rose to $0.36 per diluted share in 2025, ...