SolarRisk Tracker / Explore / WA / Walla Walla

Walla Walla County, WA — Solar Development Risk Assessment

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

43.2
Risk Grade
Good
Agricultural land conversion sensitivity and wine country aesthetic concerns are primary risk factors; good irradiance and Walla Walla City Light support keep base risk moderate.
Assessment Snapshot
Population
61,763
State Rank
#16
Compliance
42%
Trajectory
38

Moratorium Status

✓ No Active Moratorium
No Moratorium

Ordinance & Regulations

Setback Requirements
No county-specific solar setbacks; standard agricultural setbacks apply.
Zoning Mechanism
Walla Walla County: CUP in Agricultural zones; Walla Walla County Planning Dept 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
Mixed to neutral — wine and wheat agricultural identity; county board neutral; good irradiance drives developer interest; wine country visual sensitivity moderates some landowner participation
Basis for Assessment
Walla Walla City Light (municipal) serves Walla Walla city; Pacific Power serves rural areas; Whitman College presence adds educated community; wine grape and wheat farming economy; Walla Walla Valley wine tourism creates some aesthetic sensitivity to large installations; good irradiance (5.0 kWh/m²/day)
Political Risk Factors
Stable
Board Members
Board of Walla Walla County Commissioners (3 members) | Partisan elections | 4-yr terms | Walla Walla County Courthouse, Walla Walla WA

Grid, Utilities & State Context

Grid Operator
WECC / BPA Transmission — Pacific Power and Walla Walla City Light service territory; SE WA grid
Utilities
Pacific Power (PacifiCorp), Walla Walla City Light (municipal)
State Permitting Process
Large facilities (≥350 MW): EFSEC exclusive jurisdiction. <350 MW: county CUP/SUP; no statewide preemption floor. SEPA review required. GMA energy siting required in comprehensive plans. SMA applies near shorelines. Critical Areas Ordinances: wetlands, fish habitat, flood zones require county CAO compliance. Ag land conversion: county-specific farmland protection policies apply.
State Incentives
Washington Clean Energy Transformation Act (CETA/SB 5116, 2019): IOUs carbon-neutral by 2030; 100% carbon-free by 2045. Net metering: ≤100 kW IOU customers under WUTC; PUDs set individual limits. RESIP: production incentives for ≤100 kW systems. Sales & use tax exemption (RCW 82.08.962). Property tax exemption (RCW 84.36.635). Community solar via PSE, SnoPUD, Tacoma Power, Clark Public Utilities, and most WA PUDs. PACE financing in participating counties. Federal ITC: 30% (IRA 2022); 10% low-income adder for qualifying projects.

Development Activity

Active/Completed Projects
Some utility-scale solar projects on dryland wheat parcels; commercial rooftop in Walla Walla industrial and winery areas; Walla Walla City Light net metering active.
Denied/Withdrawn Projects
No formal denials on record; wine industry visual sensitivity has led some landowners to decline leasing.

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Last verified: 2026-04-01 | SolarRisk Tracker | Data sources: Government records, utility filings, public meeting minutes