The Data-Center Water Crisis

AI and cloud growth are driving power demand and water demand together, because most of the power still comes from steam-cycle plants that evaporate water to reject heat.

Two thirsts, one source

A modern data center consumes water twice. It uses water on site to cool servers, and it uses water off site at the power plants that supply its electricity. The second draw is usually larger and less visible. Any plant that turns heat into electricity through a steam cycle must reject waste heat to a cold sink, and the cheapest cold sink is evaporating water.

As AI training and inference scale up, campuses that once drew tens of megawatts now plan for hundreds. The electricity behind that load, if generated by gas, coal, or fission, carries an evaporative water footprint measured in millions of litres per day. Communities near new campuses increasingly find that the binding constraint is not land or even grid capacity but water.

Why this page set exists

The Kronos burner (Aegis / MetroVolt) is a D-3He tandem-mirror generator that converts most of its output through direct energy conversion rather than a steam turbine. Removing the steam cycle removes the largest reason a power plant needs water. This section explains, honestly and in engineering terms, why steam plants drink, what direct energy conversion changes, and what small residual cooling the burner still requires.

• The burner is a design-and-simulation study; the test unit is planned around 2032
• Frozen design point: 26.49 T plug, 17 T throat, neutron fraction 5.44%
• No hardware net-gain claim is made ahead of the breeder's first-of-a-kind milestone

Read the water story as a comparison of physics, not a promise of a product. The claim is narrow and defensible: eliminate the steam cycle and you eliminate steam-cycle water.