Idaho Welcomed the Data Center Boom. Then It Handed Them the Check.

What happens when a single building drinks like a small city and pulls power like a steel mill?

Idaho is finding out. Data centers are moving into the state fast, drawn by cheap land, cool nights, and a sales tax exemption the Legislature itself created in section 63-3622VV, Idaho Code. Each one needs two things in enormous quantities: water for cooling and electricity for servers. Both come out of systems that Idaho families and farms were using first.

This session, the Legislature passed two bills that answer the same question from two directions. Who pays for what a data center consumes? Both were signed by the governor on April 2, 2026, and both took effect July 1, 2026.

House Bill 895 (Session Law Chapter 291) adds a new section 42-252 to the Idaho Code. The operative rule is one sentence long. Data centers that begin construction on or after July 1, 2026, "may not use water for cooling purposes as a consumptive use, unless the water is supplied by a municipal, water district, or water and sewer district water system."

Translation: no new data center gets to sink its own well or claim its own water right for cooling. If it wants water, it buys from the same public systems everyone else uses, where usage is metered, priced, and planned for.

The bill's findings section does heavy lifting too. The Legislature formally found that data center water demand "conflicts with the local public interest" under section 42-202B, is "contrary to the conservation of water resources," and can drain one watershed to serve another. Those findings now sit in front of the Department of Water Resources every time a data center asks for a new appropriation or a water rights transfer. A future director cannot evaluate one of these applications as if the Legislature never spoke.

House Bill 911 (Session Law Chapter 335) handles the electric side. It adds section 61-335, Idaho Code, covering any "new large load," defined as a load that increases demand at a service entrance by fifty megawatts or more within any sixty-month window under a contract signed on or after July 1, 2026.

Picture a table of longtime diners splitting a check evenly. A new guest sits down and orders more than everyone else combined. H911 says the restaurant now itemizes.

A utility can only serve a load that size under a contract approved by the Public Utilities Commission. The filing must include what the statute calls a "no harm test," an assessment of what the new load will do to existing customers' rates. The commission approves only if the utility proves two things: service quality for everyone else stays where it would have been, and the new load funds "its full cost of service, including its share of generation, transmission, substation, and distribution infrastructure investments" that exist only because of it.

The Legislature also anticipated the workarounds. Subsection (5) bars a large load from dodging the threshold "by means of artifice," such as splitting itself across multiple meters or service entrances. Subsection (6) requires financial security against stranded costs, so if the data center walks away from a half-built substation, its bond covers the loss instead of your power bill. And subsection (8) instructs the commission to issue orders providing "reasonable assurance that new large loads will not cause the rates charged to the public utility's other customers to increase."

The industry's defense deserves a straight telling. Data centers bring construction jobs, property tax base, and long-term contracts that can help a utility finance grid upgrades everyone benefits from. A very large customer paying full freight can lower average costs for everyone else. That math is real, and Idaho's own tax code shows the state wants these projects.

Granting all of that resolves nothing, because neither bill bans a data center. H895 does not cap how much municipal water a data center can buy. H911 does not cap how many megawatts it can contract for. Both bills do one thing: they assign the check to the party running up the bill. If a project truly benefits everyone, the no harm test is easy to pass and the water bill is just a cost of doing business. The only projects these laws burden are the ones whose business model depended on someone else's aquifer and someone else's rate base.

Idaho did what a landlord with a waiting list can afford to do. It set house rules. Data centers are still welcome, still tax-advantaged, still coming. But as of July 1, the water comes from a metered tap and the grid expansion goes on their tab.

Idaho's message fits in one sentence: build here and pay your own way.

This is our read of the bills. We encourage every reader to read the legislation for themselves and reach their own conclusions.