King County, WA — Solar Development Risk Assessment

No Moratorium

King County code: setback and site plan requirements for utility-scale solar in Rural Area and Agricultural Production District zones; Seattle Building Code has solar readiness provisions for new construction.

King County: CUP in Rural Area and Agricultural Production District zones; Seattle: solar integrated into building permit process; King County Hearing Examiner for major utility-scale applications.

Supportive — Seattle climate action plan and King County sustainability goals drive strong solar demand; Seattle City Light active solar programs; diverse political support

Seattle City Light (SCL) serves Seattle and some suburbs; PSE serves eastern suburbs (Bellevue, Redmond, Kirkland); King County has aggressive climate commitments; limited greenfield land for utility-scale but massive commercial rooftop and community solar market; tech industry corporate solar procurement significant

Improving

Large facilities (≥350 MW): Washington EFSEC exclusive siting jurisdiction — state preempts local permitting. Projects <350 MW: county CUP or SUP in agricultural or resource-zoned land; no statewide preemption floor for smaller projects. SEPA review required for utility-scale; DNS/MDNS/EIS per county SEPA lead agency. GMA counties must address energy siting in comprehensive plans. SMA applies near shorelines. Critical Areas Ordinances: wetlands, fish habitat, flood zones require county CAO compliance. Agricultural land: county-specific farmland protection policies apply; prime farmland conversion may require additional findings.

Washington Clean Energy Transformation Act (CETA/SB 5116, 2019): IOUs must be carbon-neutral by 2030; 100% carbon-free by 2045. Net metering: ≤100 kW for IOU customers under WUTC; PUDs set individual limits, most allow up to 100% annual consumption offset. RESIP (Renewable Energy System Incentive Program): production incentives for systems ≤100 kW, utility-funded. Sales & use tax exemption: solar PV equipment fully exempt (RCW 82.08.962). Property tax exemption: solar systems excluded from assessed value (RCW 84.36.635). Community solar programs through PSE, SnoPUD, Tacoma Power, Clark Public Utilities, and most WA PUDs. PACE financing available in participating WA counties. Federal ITC: 30% (IRA 2022); low-income adder: 10% bonus ITC for qualifying community benefit projects.

Large commercial and community solar portfolio: Seattle City Light has facilitated multiple community solar projects; King County Metro operations center rooftop solar; numerous commercial rooftop projects in Seattle, Bellevue, and Kent industrial districts; limited utility-scale greenfield due to urban density.

No confirmed utility-scale denials; limited greenfield applications due to land availability.