SolarRisk Tracker / Explore / WY / Sweetwater

Sweetwater County, WY — Solar Development Risk Assessment

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

49
Risk Grade
Fair
Industrial county with some diversification interest; good solar resource; CUP framework exists; trona mining dominant
Assessment Snapshot
Population
44614
State Rank
#7
Compliance
44%
Trajectory
53

Moratorium Status

✓ No Active Moratorium
No

Ordinance & Regulations

Setback Requirements
Sweetwater County: setbacks per county permit requirements. 174 Power Global: 100 MW on private land near Green River. BLM Sweetwater Field Office: project area includes BLM-administered federal land (~4,166 acres) and private land (~5,508 acres) per BLM RAC meeting notes 2024.
Zoning Mechanism
Sweetwater County: CUP/SUP for smaller projects. Wyoming ISC Site Permit for large facilities.
Acreage Caps
None codified.
Density Caps
None codified.
Spacing Rules
None codified.
Size Restrictions
None codified.

Board Sentiment & Political Risk

Sentiment Analysis
Cautious/neutral — rural Wyoming county; no documented solar board votes or organized opposition on public record as of Mar 2026.
Basis for Assessment
Wyoming counties retain full zoning authority over solar siting (no state preemption); R-majority rural board typical of Wyoming plains counties; Rocky Mountain Power/PacifiCorp territory; limited utility-scale solar development in region to date.
Political Risk Factors
Neutral
Board Members
Board of County Commissioners | 3 members | 4-year terms | partisan (all counties R-majority)

Grid, Utilities & State Context

Grid Operator
WECC / PacifiCorp
Utilities
Rocky Mountain Power
State Permitting Process
County zoning; WDEQ
State Incentives
Federal ITC only

Development Activity

Active/Completed Projects
174 Power Global solar installation | Sweetwater County | operational (Wikipedia Solar power in Wyoming). Sweetwater County: substantial energy heritage (natural gas, trona mining, wind). PacifiCorp Rocky Mountain Power and Black Hills Energy serve Sweetwater County.
Denied/Withdrawn Projects
No confirmed WY ISC permit denial or county CUP rejection on record for Sweetwater County as of Mar 2026. ISC proceedings for large-scale facilities are rare. Sage-grouse PHMA exclusions and wildlife restrictions are primary siting barriers.

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Last verified: 2026-03-24 | SolarRisk Tracker | Data sources: Government records, utility filings, public meeting minutes