Regulated companies are required to report to the commission annually. Company reports are posted when they are available.
Note: If you’re looking for data for the most recent year regarding total number of customers, megawatt hours and dollars spent you can find the information on the statistics data request sheet found in the supplemental report for each utility.
For data from previous years visit: www.eia.gov.
Electric
2024 Avista Corporation
2024 Avista WA Supplemental
2024 Pacific Power & Light Company
2023 Pacific Power & Light Company Supplemental
2024 Puget Sound Energy
2024 Puget Sound Energy Supplemental
Natural Gas
2024 Avista Corporation
2024 Avista Corporation Supplemental
2024 Cascade Natural Gas Corporation
2024 Cascade Natural Gas Corporation Supplemental
2024 Northwest Natural Gas Company
2024 Northwest Natural Gas Company Supplemental
2024 Puget Sound Energy
2024 Puget Sound Energy Supplemental