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
2023 Avista Corporation- 2023 Avista WA Supplemental
- 2023 Pacific Power & Light Company
- 2023 Pacific Power & Light Company Supplemental
- 2023 Puget Sound Energy
- 2023 Puget Sound Energy Supplemental
Natural Gas
- 2023 Avista Corporation
- 2023 Avista Corporation Supplemental
- 2023 Cascade Natural Gas Corporation
- 2023 Cascade Natural Gas Corporation Supplemental
- 2023 Northwest Natural Gas Company
- 2023 Northwest Natural Gas Company Supplemental
- 2023 Puget Sound Energy
- 2023 Puget Sound Energy Supplemental