NV Energy, which serves about 90 percent of Nevada, sued to stop a private arbitration brought by Denver-based developer Tract over its Reno Power project, in what CBS News called a first-of-its-kind fight reported by Riley Callanan. Tract's two Reno campuses would draw more than 2 gigawatts, close to a third of NV Energy's entire generating capacity. Tract has committed $1 billion to grid upgrades and already spent $127 million. The utility wants the Nevada Public Utilities Commission to decide who carries the expansion cost. Its spokesperson put it plainly: "Projects that create new infrastructure or energy costs must pay those costs and cannot shift them onto Nevada families, small businesses, or existing customers." Tract's counter is that NV Energy failed to plan for power it promised. Nevada has 22 data centers operating and 20 more planned.
The Truckee Meadows runs on a river with senior rights attached and a groundwater basin that has been managed for decades. An evaporative design in that basin buys a low wet bulb and a water fight. A dry-cooled or closed-loop design avoids the fight and raises the electrical load, which is the exact quantity under dispute in this case. Two gigawatts is a plant-scale number, and the difference between a 1.15 and a 1.35 annualized PUE across that load is hundreds of megawatts of generation somebody has to build. The western data center water draw is already measured in billions of gallons against a drought baseline, and Phoenix ran the same arithmetic and got a ninefold increase.
This is not an abstract regulatory question. If the developer carries the interconnection and generation cost, chilled water plant capex competes directly against grid capex inside one budget, and every kilowatt the mechanical system saves is a kilowatt of generation nobody has to fund. That pushes designs toward higher supply temperatures, economizer hours, and warm-water direct-to-chip. If the cost socializes onto ratepayers, the developer optimizes for first cost and schedule, which pushes toward conventional towers and cheap chillers. The regulator is effectively picking a cooling architecture without naming one. The ratepayer protection pledges circulating among utilities are the same lever with less legal weight.
Whichever way the Nevada commission rules, the reasoning gets cited in every western state with a queue, and there are a lot of them. Operators should be modeling both outcomes now. The design that survives a developer-pays ruling is not the same building as the design that survives a ratepayer-pays ruling, and the difference shows up in the mechanical drawings long before it shows up in a rate case. The water-for-power trade is the whole argument, and Nevada is about to price it.