Avista Corp. provided earnings guidance for the years 2021, 2022 and 2023. The company is confirming its 2021, 2022, and 2023 earnings guidance with consolidated ranges of $1.96 to $2.16 per diluted share in 2021, $2.18 to $2.38 per diluted share in 2022, and $2.42 to $2.62 per diluted share in 2023.