ZettaJoule is developing high-temperature gas reactors based on modernised Japanese HTGR technology targeting oil and gas, steelmaking, aviation, data centres, and e-fuel applications. The company opened a Houston office at the Ion innovation hub at Rice University in May 2026. ZettaJoule's approach leverages the proven operational record of Japan's High-Temperature Engineering Test Reactor while modernising its design for commercial industrial heat applications.
Private investors