SPOKANE, Wash., Aug. 30, 2024 (GLOBE NEWSWIRE) -- Avista (NYSE: AVA) has made annual rate adjustment filings with the Washington Utilities and Transportation Commission (Commission) that if approved, will result in an overall decrease in natural gas rates of 13.9%, and an overall increase in electric rates of 3.5%. Washington Natural Gas Adjustment FilingsFour natural gas adjustments were filed, that if approved, are designed to change overall natural gas revenues as follows: Purchased Gas Cost Adjustment: ...