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Wyoming Industrial Siting Act — State Review of Large Industrial Projects (WY)

Tracked preemption from the Wyoming overlay bundle.

Overview

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Effective
1975-05-23
Sunset
—
Authority
state
Scope
state:WY
Other Wyoming preemptions
Wyoming HB 2 / 2026 — Fast Track Permits Act (Residential Permit Shot-Clock)Wyoming §18-5-501 — County-Primacy Siting Authority for Wind and SolarWyoming Sage-Grouse Core Area Strategy (Executive Order)Wyoming §15-1-103(a)(xix) — Manufactured Housing Parity in Single-Family DistrictsWyoming §35-20 — Uniform Standards Code for Factory-Built Residential DwellingsWyoming §18-5-301 — 35-Acre Subdivision ExemptionWyoming §18-5-201(a) — Agricultural Exemption from County ZoningWyoming Constitution Art. 13 §1 — First-Class City Home Rule (Limited)

Trigger predicate

When this evaluates true for a parcel, the law's preempted fields take precedence over base zoning.

OR
  • project.estimated_construction_cost_usd ≥ 220000000
  • project.facility_type ∈ {electric_generation_large, coal_mine_large, uranium_mill, industrial_chemical, energy_conversion_large}

Preempted fields

2 fields on the base district schema are rewritten when the trigger fires.

FieldOpValueNote
review_typeoverridestate_industrial_siting_council_concurrentIndustrial facilities ≥$220M (or specified facility types) require a permit from the Wyoming Industrial Siting Council in addition to (and concurrent with) local land-use approvals
base_districts[*].local_industrial_siting_authoritypreserve—Local zoning approval is still required; ISA does not preempt local authority but adds a parallel state review of socioeconomic, environmental, and infrastructure impacts

Citation

Authority source
W.S. §35-12-101 et seq. (Industrial Development Information and Siting Act)
§ §35-12-101 et seq. (Industrial Siting Act)
https://law.justia.com/codes/wyoming/title-35/chapter-12/

Research notes

Threshold periodically adjusted for inflation; the current statutory threshold is ~$220M (W.S. §35-12-102(a)(vii) — verify current dollar figure against latest DEQ Industrial Siting Division publications). Captures large coal mines, utility-scale power plants, industrial chemical facilities, energy conversion facilities, and uranium mills. Wind and solar generation may escalate to the Council when above the dollar threshold; otherwise governed by county siting under §18-5-501 (see separate overlay). Federal conflict check enabled because NEPA review by federal lead agency (BLM, USFS, NRC) operates concurrently for projects on federal land or requiring federal permits.