Franklin County, WA — Solar Development Risk Assessment

Local solar ordinance barriers, board sentiment, and utility policies that affect development timelines and risk.

29
Risk Grade
Excellent
Active market saturation and BPA transmission queue congestion are the primary risk factors; Franklin PUD pro-solar stance and top-tier irradiance keep base risk low.
Assessment Snapshot
Population
98,467
State Rank
#4
Compliance
28%
Trajectory
28

Moratorium Status

✓ No Active Moratorium
No Moratorium

Ordinance & Regulations

Setback Requirements
Franklin County code: setback minimums for utility-scale solar; specific requirements from property lines and residences.
Zoning Mechanism
Franklin County: CUP in Agricultural and Industrial zones; Franklin County Planning Commission and Board of County Commissioners.
Acreage Caps
None codified.
Density Caps
None codified.
Spacing Rules
None codified.
Size Restrictions
None codified.

Board Sentiment & Political Risk

Sentiment Analysis
Supportive — Franklin PUD proactive; Tri-Cities economic development alignment; strong BPA interconnection; among highest irradiance in WA
Basis for Assessment
Franklin PUD serves entire county; Pasco is Tri-Cities hub with industrial demand; BPA McNary substation provides strong backbone; county board pro-development; solar complements Columbia Basin agricultural economy; strong irradiance (5.4 kWh/m²/day)
Political Risk Factors
Improving
Board Members
County Board of Commissioners (3 members) | Partisan elections | 4-yr terms | Franklin County Courthouse, Pasco WA

Grid, Utilities & State Context

Grid Operator
WECC / BPA Transmission — Franklin PUD service territory; McNary/Midpoint substations on Columbia River
Utilities
Franklin PUD
State Permitting Process
Large facilities (≥350 MW nameplate): Washington EFSEC (Energy Facility Site Evaluation Council) has exclusive siting jurisdiction — state agency preempts all local permitting. Projects <350 MW: county-level conditional use permit (CUP) or special use permit (SUP) in agricultural or resource-zoned land; no statewide preemption floor for smaller projects. SEPA (State Environmental Policy Act): environmental review required for utility-scale projects; DNS, MDNS, or full EIS depending on county SEPA lead agency threshold. Growth Management Act (GMA): 29 WA counties must incorporate energy siting in comprehensive plans; some have adopted renewable energy elements. Shoreline Management Act (SMA): projects near shorelines require Shoreline Substantial Development Permit. Critical Areas Ordinances (CAO): wetlands, fish/wildlife habitat, flood zones, and geologically hazardous areas require county CAO compliance review. Agricultural land: county-specific farmland protection policies apply; prime farmland conversion may require additional findings under county comprehensive plan.
State Incentives
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 (PSE, Avista, Pacific Power) under WUTC; PUDs set individual limits, most allow up to 100% of annual consumption offset. RESIP (Renewable Energy System Incentive Program): production-based incentives for systems ≤100 kW, funded by utilities under WUTC mandate. 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: available through PSE, SnoPUD, Tacoma Power, Clark Public Utilities, and most WA PUDs. PACE financing: available in participating WA counties. Federal ITC: 30% investment tax credit (IRA 2022) for commercial and residential. Low-income adder: 10% bonus ITC for projects serving income-qualified communities (IRA §48E).

Development Activity

Active/Completed Projects
Multiple large utility-scale solar projects online or in permitting in Franklin County: Clover Island Solar; multiple 20–100 MW projects along WA-395 and US-12 corridors; Franklin PUD interconnection queue robust; Pasco industrial zone has significant commercial rooftop pipeline.
Denied/Withdrawn Projects
No formal denials on record; some interconnection delays due to BPA queue congestion.

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