Endeavour, Trevi Plan Data Center Desalination, Up to 200,000 Gal/MW/Day

Why it matters for cooling and siting

The heat source is the point. The release says ThermalWorks builds closed-loop, waterless cooling, so Endeavour's facilities consume no water for cooling, and that the system captures IT heat at the temperature Trevi's process needs. Trevi regenerates its draw solution with heat of 60 to 80°C. If a cooling design can deliver heat in that range, rejected heat becomes an input rather than a load to dump through towers or dry coolers.

For operators in water-stressed regions, that would change the siting argument, a theme Voltgrid News also covered in NVIDIA's near-zero cooling water push. The release contrasts a conventionally evaporatively cooled facility at about 1.8 liters per kWh of computing with a claimed output of up to 31 liters per kWh of clean water from this system. Both numbers come from the companies, and the release does not give the site or period behind the 1.8 figure.

The brine and energy claims

Trevi's pitch is aimed at brine. The release says a typical seawater plant sends about a liter and a half of brine back to the sea for every liter of fresh water. Zero liquid discharge, which evaporates brine to solid salt, normally runs on electricity: the release cites 16 to 26 kWh per cubic meter for conventional brine concentrators and 52 to 70 for crystallizers. Trevi says its process, paired with heat-driven crystallizers, cuts purchased energy by roughly 85 percent and can concentrate brine to solids.

Trevi CEO John Webley said in the release that the company has run the process on seawater in Hawaii, on reverse-osmosis brine in California and on produced water in California, with Oman to follow. The release describes a solar-thermal plant at the Natural Energy Laboratory of Hawaii and a two-year pilot with the Orange County Water District.

What is not confirmed yet

The release describes no data-center installation of Trevi's system, and no independent party has verified the per-megawatt water yield. The yield depends on the water source, on heat quality and on how continuously a site rejects heat. Cost, the capital outlay per megawatt and the power draw of pumps and membranes are not stated. The release also cites International Energy Agency figures of 415 terawatt-hours of data-center electricity use in 2024 and about 945 by 2030, and argues that heat from the 2030 fleet could in theory supply more than half of today's global desalination output. That is an extrapolation by the companies, not a forecast by the IEA.

Watch for the first named Endeavour site, the heat temperature it actually delivers, and any measured liters of water per kWh.