The Tennessee Valley Authority is planning around roughly 1,340 new data centers across its seven-state footprint, worth an estimated $912 billion combined, according to Nashville Scene's coverage. TVA's 2024 resource plan never mentioned data centers. The 2026 draft treats them as the reason the utility rewrote its generation outlook through 2050.
The draft 2026 Integrated Resource Plan projects electricity demand could climb 16 percent under TVA's baseline case, or as much as 60 percent by 2040 if growth keeps accelerating. To cover it, TVA is evaluating 7 to 26 gigawatts of new natural gas generation. Coal units at the Cumberland City and Kingston plants, once slated to retire around 2027, now run through 2039. The plan's projected carbon output lands near 50 million tons a year. Public comment on the draft closes July 22.
TVA is also building a dedicated rate class for data centers, following a February letter sent to all 153 local power companies in its territory. One option on the table: a capacity commitment charge, paid upfront, before a data center ever draws power. TVA spokesman Scott Brooks has described the load itself as unusual, since data centers run 24/7, drawing steady, heavy generation with none of the daily swing utilities normally plan around. A facility billed on firm, round-the-clock capacity has no slack hours to hide inefficiency in. Every megawatt a cooling plant burns gets charged at the same rate as every megawatt a GPU burns.
The Tennessee Valley isn't Phoenix or the Colorado River basin. TVA's reservoir and river system gives operators surface water most Western sites can't count on, which is why the fight in Nashville centers on Fisk University's proposed North Nashville data center and Metro Council's new zoning rules, not evaporation permits. The binding constraint on TVA's grid is megawatts, not gallons, the same interconnection bottleneck other regions are already living with.
That bottleneck compounds when the hardware itself is backlogged. Turbine makers are largely sold out through 2029, so gas capacity TVA approves this year may not deliver a single megawatt before the decade ends. Operators who can't wait are the ones evaluating the kind of behind-the-meter gas plants built to skip the queue entirely, trading TVA's rate class for their own generator and their own emissions math.
For everyone staying on TVA's grid, the math points one direction. Water-cooled towers pulling from the Tennessee River keep the water column cheap, but water was never the scarce input here. Cutting PUE with direct-to-chip liquid cooling reduces the megawatt column instead, the one TVA is now charging a capacity fee for and can't expand until its gas turbines clear a backlog running past 2029.