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Title

State Environmental Policy Act Final Programmatic Environmental Impact Statement for Utility-Scale Solar Energy Facilities in Washington State

 
Publication number Date Published
25-06-002June 2025
VIEW NOW State Environmental Policy Act Final Programmatic Environmental Impact Statement for Utility-Scale Solar Energy Facilities in Washington State (Number of pages: 246) (Publication Size: 20MB)




Final PEIS Utility-Scale Solar Cover Letter
(2 pages) (137KB)

Final PEIS Utility-Scale Solar PEIS Summary
(13 pages) (1MB)

Final PEIS Utility-Scale Solar Appendix A Measures to Avoid, Reduce, and Mitigate Impacts
(46 pages) (741KB)

Final PEIS Utility-Scale Solar Appendix B Tribal Rights, Interests, and Resources
(35 pages) (1MB)

Final PEIS Utility-Scale Solar Appendix C Environmental Justice
(60 pages) (6MB)

Final PEIS Utility-Scale Solar Appendix D Earth Resources
(45 pages) (9MB)

Final PEIS Utility-Scale Solar Appendix E Air Quality and Greenhouse Gases
(35 pages) (1MB)

Final PEIS Utility-Scale Solar Appendix F Water Resources
(50 pages) (4MB)

Final PEIS Utility-Scale Solar Appendix G Biological Resources
(120 pages) (27MB)

Final PEIS Utility-Scale Solar Appendix H Energy and Natural Resources
(29 pages) (2MB)

Final PEIS Utility-Scale Solar Appendix I Environmental Health and Safety
(52 pages) (4MB)

Final PEIS Utility-Scale Solar Appendix J Noise and Vibration
(36 pages) (1MB)

Final PEIS Utility-Scale Solar Appendix K Land Use
(48 pages) (5MB)

Final PEIS Utility-Scale Solar Appendix L Aesthetics Visual Quality
(37 pages) (1MB)

Final PEIS Utility-Scale Solar Appendix M Recreation
(29 pages) (4MB)

Final PEIS Utility-Scale Solar Appendix N Historic and Cultural Resources
(45 pages) (3MB)

Final PEIS Utility-Scale Solar Appendix O Transportation
(40 pages) (4MB)

Final PEIS Utility-Scale Solar Appendix P Public Services and Utilities
(48 pages) (4MB)

Final PEIS Utility-Scale Solar Appendix Q Cumulative Impacts
(106 pages) (5MB)

Final PEIS Utility-Scale Solar Appendix R Scoping Report
(27 pages) (1MB)

Final PEIS Utility-Scale Solar Appendix S Response to Comments
(155 pages) (12MB)

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Author(s) Shorelands and Environmental Assistance Program
Description The Washington State Legislature directed Ecology to prepare a non-project environmental review of utility-scale solar energy facilities in Washington by June 30, 2025. Revised Code of Washington (RCW) 43.21C.535 requires Ecology to assess and disclose the probable significant adverse environmental impacts and related mitigation measures for solar energy facilities.
The Final PEIS has been prepared to satisfy the requirements of the Washington State Environmental Policy Act (SEPA). The purpose of the Final PEIS is to evaluate potential impacts and mitigation at a broad level.
The PEIS considers potential impacts from general types of solar energy facilities; it is not site-specific or for a specific project. The types of energy facilities evaluated in the PEIS would require additional, more detailed, project-level environmental review prior to permit decisions.
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The mission of the Department of Ecology is to protect, preserve, and enhance Washington’s environment. To help us meet that goal, please consider the environment before you print or request a copy.

ADA Accessibility
The Department of Ecology is committed to providing people with disabilities access to information and services by meeting or exceeding the requirements of the Americans with Disabilities Act (ADA), Section 504 and 508 of the Rehabilitation Act, and Washington State Policy #188.
Visit Ecology’s website for more information.
Contact Clean Energy Coordination at 360-407-6600 or cleanenergy@ecy.wa.gov
Keywords State Environmental Policy Act (SEPA), clean energy, Programmatic Environmental Impact Statements, Department of Ecology, Solar
WEB PAGE Programmatic EIS
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State Environmental Policy Act Draft Programmatic Environmental Impact Statement for Utility-Scale Solar Energy Facilities in Washington State