Energy startup Arbor Energy on Wednesday said it had sold up to 5 gigawatts’ worth of its modular turbines to GridMarket, a company that helps arrange power projects for data centers and industrial users.

“Everyone wants more power. They wanted it yesterday,” Brad Hartwig, co-founder and CEO of Arbor, told TechCrunch. “The time frames are compressing and the scale is getting larger.”

Arbor’s Halcyon turbines are based on rocket turbomachinery, high-performance engine technology originally developed for spaceflight, and its first commercial turbines will be 3D printed and capable of generating 25 megawatts each. GridMarket’s order, if fully fulfilled, represents 200 units.

Neither company disclosed the exact price of the deal, though Hartwig said that Arbor has seen a “willingness to pay upwards of $100 per megawatt-hour.” A person familiar with the deal told TechCrunch that the total is in the single-digit billions of dollars.

The startup plans to connect its first turbine to the grid in 2028 and ramp production through 2030, at which point it hopes to deliver more than 100 turbines annually. The goal, Hartwig said, is to eventually produce enough for 10 gigawatts of new capacity every year.