What is StarCloud?

StarCloud is a space-based data center venture founded by Philip Johnston, focused on deploying orbital compute infrastructure. The material tracks its technical milestones, cost efficiency, and expansion plans, including a terrestrial business targeting data center competition by 2028.

• Aug 2026 - Philip Johnston said StarCloud filed with the FCC for a constellation of 88,000 satellites, enabling “on the order of 20 gigawatts of new compute capacity.”
• Aug 2026 - Philip Johnston reported that StarCloud completed “the whole of Starcloud 2 including the launch for $2 million.”
• Aug 2026 - Philip Johnston claimed their radiator is “at least 10 times less mass per watt of dissipation than the ISS radiator and 500 times less cost per watt.”
• Aug 2026 - Philip Johnston stated they are “the only people in the world now that know where both an H100, a B200, H200 will fail if you blast it with high velocity protons and heavy ions.”
• Aug 2026 - Philip Johnston said StarCloud can fit “up to 10 terawatts” in dawn-sun synchronous orbit, “20 times the entire US power.”
• Aug 2026 - Philip Johnston said that end of 2028 is when they’re “starting to ramp up for the terrestrial business competing with terrestrial data centers.”