 SPOKANE, Wash., Feb. 24, 2021 GLOBE NEWSWIRE -- Avista Corp. NYSE: AVA today reported net income attributable to Avista Corp. shareholders of 129.5 million, or 1.90 per diluted share for the year ended Dec. 31, 2020, compared to 197.0 million, or 2.97 per diluted share for the year ended Dec. 31, 2019. 