Not built yet. Every figure below is what it would take and emit at the capacity its owners have announced.
Water — consumed, not returned
Taken from the basin2,206M gal/yr
Evaporated on site271M gal
Making the power1,934M gal
Basin stressHigh
Where the water comes from
Municipal potable supply
Cooling
Closed-loop liquid
Basis
Modelled from cooling design — WUE 0.10 L/kWh
Air — what the stacks emit
Nitrogen oxides2,235t/yr
Sulphur dioxide1,241t/yr
Fine particulates247t PM2.5
Health damages$203M/yr
Where it burns
ERCOT — Texas + 25% turbines on the site itself
Generation mix
Gas 40 · Wind 24 · Solar 11 · Coal 13 · Nuclear 9
Emitted at the fence line
33% of this site's criteria pollution
CO₂e
3,907 kt/yr — climate, not air quality
Who wanted it
Who asked for it
OpenAI — SB Energy develops on the Sandow Lakes industrial site
Who approved it
Milam County agreements; the site carries interconnection inherited from the retired Alcoa aluminium smelter and its lignite mine
What it serves
OpenAI compute under Stargate
IT capacity
0 MW running of 1,200 MW announced
An aluminium smelter's old interconnection being reused for compute is the cleanest illustration of what AI load actually replaces: heavy industry that left, and the grid capacity it left behind.
Water and air figures are modelled from disclosed capacity, not measured — site-level
error is roughly ±40%. Diesel backup generators are not counted, so on-site figures are floors.
Full method.