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State incentives

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Clean Energy Grants (Washington Department of Commerce)Commerce competitive grants for construction, deployment and predevelopment of clean energy projects, including energy storage, renewable hydrogen and geothermal, funded in part by the Climate Commitment Act; awards range from $50,000 to $2.5 million.grant · Geothermal, Hydrogen, Storage · $50,000 to $2.5 million per award; about $32 million in the 2025–2027 round
Clean Energy Transformation Act (CETA), RCW 19.405Requires Washington electric utilities to supply 100% of retail electricity from nonemitting or renewable resources by January 1, 2045, with a greenhouse-gas-neutral interim standard for 2030; nuclear and geothermal count toward compliance.mandate or standard · Nuclear, Geothermal, Storage
Clean Fuel Standard (RCW 70A.535) with hydrogen fuel and capacity creditsEcology's program generates credits for low-carbon fuels including hydrogen, plus capacity credits for hydrogen refueling infrastructure, and offers advance credits to public entities for zero-emission transportation projects; the 2026 advance-credit window closed July 31, 2026.mandate or standard · Hydrogen · About 67,686 advance credits (estimated $3 million) available in the 2026 window
HB 1679 – Advanced nuclear reactor projects as CETA compliance (proposed)PROPOSEDWould let electric utilities count investments in advanced nuclear reactor projects, defined as fission reactors, toward CETA compliance; no enactment appeared in the results.mandate or standard · Nuclear
Sales and Use Tax Deferral Program for Clean Energy Investment ProjectsLets projects of $2 million or more that manufacture clean energy components, store renewable energy, or produce renewable or green hydrogen defer sales and use taxes, with 50% to 100% deferral depending on labor standards; applications accepted through June 30, 2032.tax credit · Hydrogen, Storage, Critical minerals · Deferral of 50% to 100% of sales and use tax on projects of $2 million or more
Sales and use tax exemption for machinery used in generating electricity from geothermal resources, RCW 82.08.962Exempts or refunds state and local sales and use tax on machinery and equipment used directly to generate electricity from geothermal resources, with the exemption amount depending on the subsection and project; the main exemption runs through December 31, 2029.tax credit · Geothermal · Up to 100% of state and local sales tax for qualifying equipment, depending on the subsection
SB 5821 – Integrating advanced nuclear energy into the state energy strategyPROPOSEDWould require the Department of Commerce to develop a nuclear power strategic framework by December 2026 as part of the state energy strategy; the bill had a January 2026 committee hearing and no enactment appeared in the results.other · Nuclear
Targeted urban property tax exemption amendment for clean energy transformation facilities (advanced nuclear manufacturing), 2026 Barnard billUpdated the targeted urban property tax exemption so qualifying clean energy transformation business facilities, including advanced nuclear manufacturing, stay eligible when federal certification takes longer than the state's original timelines; signed by the governor March 2026.tax credit · Nuclear