Crusoe, a Denver-based AI data center startup that recently raised $3.9 billion, has ended its plans to use a new line of stationary power plants developed by Boom Supersonic, a company developing a supersonic passenger jet. Founded in 2018, Crusoe has since become a major player in the AI data center sector, with a massive campus in Abilene, Texas, supplying computing power to OpenAI. However, the ambitious $1.25 billion deal to use Boom’s Superpower turbines has fallen through, with the first deliveries initially slated for 2027.

Boom Supersonic CEO Blake Scholl announced the change on X, stating that other customers were in the pipeline and that turbines are not part of Crusoe’s near-term primary power mix. Crusoe confirmed it is no longer doing business with Boom, but remains flexible, choosing energy solutions that best suit each site. Meanwhile, losing its launch customer appears to be a setback for Boom, which raised $300 million last year to commercialize its new business. The idea was to use profits from the stationary power plant business to fund the development of Overture, the supersonic passenger jet.

Crusoe’s initial 1.2 gigawatt data center in Abilene, built for Oracle and OpenAI, is powered by the grid, with a gas-turbine power plant used only for backup. Crusoe is also building a 900 megawatt data center in Abilene for Microsoft, which will be powered by on-site gas turbines. The partnership between Crusoe and Boom was meant to be a game-changer for AI data centers, but for now, it’s business as usual for the tech giant.

The future of AI data centers and their power solutions is uncertain, with new partnerships and energy systems constantly in flux. As for Boom, they continue to work on their Overture jet, hoping for a successful future in both supersonic travel and stationary power solutions.