When the Iron County Planning Commission voted on June 4 to approve a conditional use permit for the Antelope Data Center, attendees at Festival Hall in Cedar City held up paper plates. Each one carried a single word: appeal. St. George News photographed them.
The vote was unanimous. It cleared Pronghorn Development LLC to build a master-planned data center campus on roughly 640 acres along Antelope Springs Road, about eight miles west of Iron Springs Road. The plan calls for five data center buildings and an on-site natural gas power plant generating up to 1.5 gigawatts, built in phases over eight to ten years.
The approval settled the legal question. It did not settle much else. The most important facts about the Antelope Data Center remain unknown, disputed, or both.
Start with who will run it. The application does not name the technology company that would operate the facility. The land is owned by an entity called Blind Mice LLC, according to Iron County property records. The public face of the project is Scott Cuthbertson, CEO of Alpen Systems and spokesperson for Pronghorn, who told The Salt Lake Tribune the developer spent the past year hosting meetings with hundreds of people. The county approved a permit for a tenant whom the public has never met.
Then the size. County materials reviewed this spring described five buildings totaling about 1.35 million square feet, as Data Center Dynamics reported. St. George News, reporting on the approval, put the full buildout at up to 6.75 million square feet. The two figures are five times apart. The county has posted the full permit documents on its website for anyone who wants to reconcile them.
The dollar figures do not reconcile either. Financial projections filed with the application estimated a build-out value of about $30 billion, per KSL. County figures cited by ABC4 put capital investment at $68.21 billion, with $2.3 billion in annual contribution to gross regional product during construction and $511 million after, along with 672 direct on-site jobs and 1,800 total full-time positions. Those numbers came from the county, not an independent analysis.
The water figures, at least, are specific. According to county figures reported by ABC4, the facility would use 10 to 20 acre-feet during construction, 8 acre-feet for the initial fill, and 12.75 acre-feet per year after that. An acre-foot is about 325,851 gallons. For a 1.5-gigawatt campus, 12.75 acre-feet a year is a remarkably small claim. It implies closed-loop cooling. It is also a promise that now lives inside a permit condition, where it can be enforced, or not.
Residents spent months testing these claims. A March 5 public hearing drew about 350 people, per KSL, and more than three hours of public comment on water, air quality, noise, lighting, wildlife, roads, and property values. At a later meeting, one resident put it plainly: "You're going against the whole community."
The commission heard it all and approved the project anyway. Understanding why requires understanding what a planning commission can and cannot do. Iron County amended its zoning ordinance in 2025 to allow data centers and their power plants. Pronghorn applied that November. Under Utah land use law, an application that satisfies the ordinance leaves the commission with limited discretion. County zoning administrator Terry Palmer told the June 4 meeting that an applicant who meets the conditions of the current ordinance has a strong claim to approval, St. George News reported. The commission's job was compliance, not popularity.
So the commission did what it could, which was to attach conditions. Sixty-two of them, covering water rights, wastewater, road improvements, wildlife protection, noise monitoring, dark-sky lighting, cultural resource surveys, and eventual site restoration. County planner Brett Hamilton told St. George News that conditions were added and strengthened in direct response to public comments. Commissioner Dennis Gray, who said he began the process by sharing the public's concerns, called it "more conditions of approval than probably everything that's ever gone through this commission combined."
Planning Commission Chair Erick Cox told The Salt Lake Tribune, in a story republished by Iron County Today, "We did our very best to protect the people in Iron County."
Two things the permit explicitly does not do. It grants no tax incentives. No formal request for tax increment financing, abatements, or Utah Inland Port Authority participation has been submitted, and any such request would require separate public action by the County Commission, Hamilton told St. George News. One of the 62 conditions states this outright. And it sets no precedent for the next project, because the county has already pulled up the drawbridge behind this one.
On May 26, nine days before the Antelope vote, the Iron County Commission adopted a 180-day moratorium on new applications for data centers, data center power plants, and solar power plants. Antelope was exempt because its application had already been deemed complete, vesting it under the existing ordinance. The trigger was a second project. The Red Butte Energy Campus, proposed by power developer BrightNight, would pair a 1.5-gigawatt data center with more than 2 gigawatts of gas-, solar-, and battery-based generation about 8 miles north of Newcastle. Its application arrived May 4, was deemed incomplete on May 22, and now sits on hold until the moratorium ends, according to the county. Residents raised concerns at BrightNight's May 14 open house in Cedar City, the Tribune reported. Commissioners reported nonstop calls, emails, and texts in the weeks before the moratorium vote, per ABC4, and Commissioner Mike Bleak framed the pause as a way to protect residents without infringing on property rights. State law caps the moratorium at 180 days. Hamilton told KSL the county will use the time to write clearer rules, including stronger standards and geographic restrictions.
The contrast with northern Utah is hard to miss. When Box Elder County approved a 40,000-acre data center project this spring amid intense protest, commissioners left the room and finished the meeting via a Zoom livestream, ABC4 reported. Iron County's commissioners stayed in the room. They held hearings, took four months of comments, and wrote 62 conditions. The paper plates suggest some residents do not see the difference.
The sequence is now familiar across rural Utah. A large project arrives with an ordinance already written to receive it. Residents pack a hearing. The county approves the project in front of it, then pauses everything behind it while it rewrites the rules. Iron County has 180 days to write its rules. The Antelope project, vested and permitted, will not wait for them.
