The Box Elder data center and the Great Salt Lake: a water reality check

Utah's largest proposed data center would draw enormous amounts of water and energy at the north end of a lake that's already shrinking. Here's what's actually on the table — and the lever most of the coverage misses.

By BasinWard · Salt Lake City, Utah · June 4, 2026 · ~6 min read

A 40,000-acre data center and on-site power campus — the "Stratos Project," backed by investor Kevin O'Leary — has been proposed in Box Elder County, at the northern edge of the Great Salt Lake. Box Elder County commissioners approved it on May 4, 2026, though developers are still raising money and full operation is likely many years away. The project has become a national flashpoint, and the loudest argument is about water. We build water-efficiency projects for Utah farms, so people keep asking us what to make of it. Here is a straight, sourced read.

What's actually being proposed

The Stratos Project is pitched as a combined data center and energy campus spanning roughly 40,000 acres. At full build it would need about 9 gigawatts of electricity — more than double what the entire state draws at peak — and the developers plan to generate all of it on-site by burning natural gas rather than drawing from the grid. It would be built in stages, with the first phase capped near 1.5 GW.

Timeline matters here. An initial O'Leary–Cox meeting happened in January 2026; the county commission approved the project in May; but the developers still need air-quality and natural-resource permits, still need to secure water rights, and by some accounts are still raising the money. Experts at the county hearing suggested the facility likely wouldn't be operating for roughly a decade. In other words, this is a proposal with a long runway, not a done deal — which is exactly why the rules being set now matter.

The water question

Water estimates vary widely because the technology isn't finalized and public information is limited. Utah Clean Energy modeled the two most likely gas-generation methods: reciprocating engines would use on the order of 2 billion gallons of water a year just to run, while combined-cycle combustion turbines would use roughly 16.6 billion gallons a year — about 25,000 Olympic swimming pools — and that's before the water needed to cool the data center itself. Other estimates put total demand for a turbine build near 50,000 acre-feet per year. Developers have discussed buying on-site water rights and have water under contract from the nearby town of Snowville.

Crucially, the public has already moved the project. After thousands of Utahns wrote to the Division of Water Rights, the backers withdrew an application to convert agricultural water to industrial use. That's a meaningful concession — and a sign that transparency and public pressure are working as intended.

Why the Great Salt Lake changes the math

The Great Salt Lake is a terminal basin: water flows in and only leaves by evaporation. When less reaches it, the lake shrinks and exposes a lakebed laced with arsenic and heavy metals, which can blow as toxic dust across the Salt Lake metro. The Stratos site sits at the lake's north end, near sensitive wetlands and the migratory-bird habitat the basin is famous for. Add the heat: the campus would release roughly 16 GW of waste heat into Hansel Valley — the "23 atom bombs" figure a Utah State University physicist used to describe the daily thermal load — raising local temperatures and, potentially, evaporation in the worst possible place.

The accountability gap

Two things happened almost in parallel. Utah passed HB60, which took effect May 6, 2026 and trimmed the state engineer's authority to deny a water right based on broad public-welfare, recreation, or environmental harm — narrowing the grounds on which ordinary Utahns can protest. At the same time, Governor Cox publicly drew lines: the project will not run on 100% natural gas, and he directed the Department of Natural Resources to require the most water-sensitive cooling technology and to protect the lake. So the public's formal leverage shrank, while the executive branch promised guardrails. Whether those guardrails are written into enforceable, verifiable conditions is the open question.

The part most coverage misses

Here's the context that rarely makes the headline. Even at the high end, a data center drawing tens of thousands of acre-feet a year is a real impact — but agriculture accounts for roughly 71% of the water depleted from the Great Salt Lake, and alfalfa, hay, and pasture cover more than 80% of Utah's irrigated land. No single industrial user comes close to that footprint. That's not a reason to wave the data center through; it's a reason to keep the scale honest and to point at where the water actually is.

And the agricultural lever is the one with money behind it. Utah's Agricultural Water Optimization Program cost-shares 50–75% of efficient-equipment costs, and the state has committed historic sums to getting water back to the lake. Every acre-foot a farm conserves and shepherds downstream is cheaper and faster to secure than fighting over a project that may be a decade out.