Exhibit 99.1 Contact: Media: Lena Funston (509) 495-8090 lena.funston@avistacorp.com Investors: Stacey Wenz (509) 495-2046 stacey.wenz@avistacorp.com Avista 24/7 Media Access (509) 495-4174 Avista Corp. Reports Financial Results for the Second Quarter of 2024 • Year-to-date consolidated earnings reflect strength of core utility operations • Confirming consolidated earnings guidance of $2.36 to $2.56 per diluted share • Continued investment in system improved reliability during recent heat wave | --- | --- | ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED June 30, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO Commission file number 1-3701 AVISTA CORPORATION (Exact name of Registrant as specified in its charter) Washington 91-0462470 (State or other jurisdiction o ...

SPOKANE, Wash., July 31, 2024 (GLOBE NEWSWIRE) -- Avista (NYSE: AVA) has made annual rate adjustment filings with the Idaho Public Utilities Commission (IPUC or Commission) that, if approved, are designed to decrease overall electric revenues by approximately $16.6 million or 5.4% effective Oct. 1, 2024 and decrease overall natural gas revenue by approximately $29.8 million or 25.8% effective Nov. 1, 2024. These annual filings have no impact on Avista’s earnings. Electric Adjustment FilingsTwo annual electr ...

SPOKANE, Wash., July 23, 2024 (GLOBE NEWSWIRE) -- The Avista Foundation is awarding $201,750 in grants to 40 nonprofit organizations in Washington, Idaho, and Oregon to support education and youth development. "Together with our partners, we are making a difference in the lives of young people. Avista is proud to support the vital programs and organizations that nurture, educate, and uplift our youth," said Dennis Vermillion, Avista CEO. The second-quarter grants support a diverse range of organizations and ...

Significantly Enhances Cosette's Ability to Drive Further Growth Through Investments in Business Development and R&DBRIDGEWATER, N.J. and CONSHOHOCKEN, Pa. and NEW YORK, July 17, 2024 /PRNewswire/ -- Avista Capital Partners ("Avista"), a leading New York-based private equity firm focused exclusively on healthcare, and Hamilton Lane, a leading global private markets investment management firm (Nasdaq: HLNE), today announced that funds managed by Hamilton Lane have acquired a significant equity interest in Co ...

SPOKANE, Wash., July 08, 2024 (GLOBE NEWSWIRE) -- Avista Corp. (NYSE: AVA) will hold its quarterly conference call and webcast to discuss second quarter 2024 results on Wednesday, August 7, 2024, at 10:30 a.m. Eastern Daylight Time. A news release with second quarter 2024 earnings information will be issued at 7:05 a.m. Eastern Daylight Time on August 7, 2024. This call can be accessed on Avista’s website at investor.avistacorp.com. You must pre-register for the call via the Presentations and Events link at ...

SPOKANE, Wash., July 08, 2024 (GLOBE NEWSWIRE) -- Avista Corp. (NYSE: AVA) will hold its quarterly conference call and webcast to discuss second quarter 2024 results on Wednesday, August 7, 2024, at 10:30 a.m. Eastern Daylight Time. A news release with second quarter 2024 earnings information will be issued at 7:05 a.m. Eastern Daylight Time on August 7, 2024. This call can be accessed on Avista’s website at investor.avistacorp.com. You must pre-register for the call via the Presentations and Events link at ...

Combination improves affordability, engagement, choice, and revenue assurance for electric, water, and gas utilities in North America, Asia Pacific, and Latin American Markets.DALLAS, May 21, 2024 /PRNewswire/ -- Exceleron Software and PayGo Utilities today announced they have merged their business operations and formed Empower Grid Holdings ("EGH") with financial backing from Moore Strategic Ventures, Bahman Hoveida's Accurant International LLC, and Avista Development, Inc., a wholly owned, non-regulated s ...

SPOKANE, Wash., May 08, 2024 (GLOBE NEWSWIRE) -- In its first quarter, the Avista Foundation awarded just over $184,000 to 37 non-profit organizations in Washington, Idaho, Oregon, and Alaska. The grants in this first cycle are intended to directly benefit health and human service providers. In 2023, the Avista Foundation donated more than $1.8 million to help support the community and people in need. That support continues in 2024. "Supporting organizations that benefit from funds that support health and h ...

SPOKANE, Wash., May 07, 2024 (GLOBE NEWSWIRE) -- Avista is adding a new strategy to its wildfire mitigation plan. The utility announced today at a press conference with regional partners that if extreme weather conditions are forecast, like low humidity and strong winds, Avista may turn off power in specific locations to help protect public safety. This is called a Public Safety Power Shutoff, or PSPS. "Based on learning from other utilities who have implemented PSPS, it would only be used in the most extre ...