On May 29, 2026, the Uinta County Planning and Zoning Commission in southwestern Wyoming voted unanimously to approve the Prometheus data center, a proposed 1.25-gigawatt campus. The scale places the project among the largest single data center sites publicly disclosed in the Mountain West.

Executive Summary

Wyoming has quietly become one of the more permissive jurisdictions for hyperscale data center siting, and the Uinta County vote extends that pattern. At 1.25 gigawatts — enough electricity to power roughly a million homes at typical U.S. per-household draw — the Prometheus project sits in the top tier of announced campuses, closer in scale to the multi-hundred-megawatt AI training complexes now being built for hyperscalers than to traditional colocation facilities.

A unanimous local vote clears one gating item: land use. It does not clear the harder ones — power interconnection, water for cooling, transmission upgrades, and identification of the eventual tenant or tenants. For the industry, the significance is less about a single site and more about the accelerating pace at which rural counties are being asked to green-light multi-gigawatt loads that will materially reshape their electric grids.

Why Wyoming, Why Now

Wyoming offers what hyperscale developers increasingly value: cheap land, a cold climate that reduces cooling costs, an existing base of thermal and wind generation, and a permitting culture accustomed to large industrial projects from the extractive sector. Uinta County sits along the I-80 corridor near existing high-voltage transmission and natural gas infrastructure, which lowers the incremental cost of standing up new load. The state has no corporate income tax and has actively courted digital infrastructure, positioning itself against Virginia, Texas, and Arizona — jurisdictions where transmission queues and community pushback have lengthened project timelines.

The 1.25-Gigawatt Number in Context

A gigawatt is a thousand megawatts. Traditional enterprise data centers ran 5 to 20 megawatts; a decade ago, a 100-megawatt campus was considered large. AI training workloads have inverted those norms: individual buildings now draw 100 to 250 megawatts, and campuses are planned in gigawatt increments to accommodate future GPU refresh cycles. A 1.25-gigawatt approval does not mean 1.25 gigawatts will be built or energized on day one — it is a ceiling that lets the developer phase construction and lock in interconnection capacity before it is fully needed.

Local Approval Is the Easy Part

Planning commission approval is a necessary but not sufficient condition. The binding constraints on a project of this size are almost always upstream: whether the regional transmission operator can deliver the requested capacity, whether the utility will build the substations and lines, and whether state regulators will let the cost of those upgrades be socialized across ratepayers or require the data center to pay directly. Water for evaporative cooling — modest per unit of IT load, but non-trivial at gigawatt scale in a semi-arid basin — is a second live question. Neither is resolved by a zoning vote.

Winners, Losers, and the Ratepayer Question

Winners in the near term include the landowner, local construction trades, and the county tax base. Wyoming’s electric utilities gain a large new customer, which spreads fixed costs. The harder question is who ultimately pays for grid upgrades: if transmission build-out is rate-based, residential customers may see bills rise to serve a load that does not employ many of them. This is the same tension playing out in Virginia, Ohio, and Georgia, and it is the reason state public utility commissions — not planning boards — are becoming the real decision-makers on hyperscale siting.

Background

Wyoming has been a quiet but consistent recipient of data center investment since Microsoft’s Cheyenne campus expanded in the 2010s, followed by additional projects tied to Meta and cryptocurrency operators. The state’s low power costs, cool climate, and pro-development posture have made it a natural fit for compute-heavy workloads, though it has historically lagged the largest markets in absolute capacity.

The current cycle is different in kind. AI training and inference workloads are driving requests for gigawatt-scale campuses that until recently would have been considered utility-scale generation projects, not IT facilities. That shift is forcing rural counties, state utility commissions, and grid operators to make decisions with implications for electricity prices and system reliability far beyond the fenceline of any single site.

Source: Uinta County Planners Give Unanimous OK To 1.25-Gigawatt Prometheus Data Center — Cowboy State Daily reports the local planning commission’s unanimous approval of the Prometheus hyperscale site in southwestern Wyoming.