“The world's first commercial fusion energy generator marches towards 2024 operation!”

CEO of OpenAI; then board chairman and lead investor in Helion Energy

Said Apr 4, 2022Deadline Dec 31, 2024Sam Altman on X (@sama), April 4, 2022 (quote-tweeting Helion on Polaris construction)

Helion finished assembling Polaris in late 2024 and began initial operations, but it was a prototype, not a commercial generator, and produced no electricity in 2024. Helion's first commercial plant, Orion, only broke ground in July 2025 and targets 2028.