#MIT Technology Review

2026: The Year of Energy Transformation — Sodium-Ion Batteries Go Global as Solid-State Tech Hits Production Milestone

Sodium-ion and solid-state battery technologies hit a turning point in 2026. Sodium batteries emerge as a low-cost lithium alternative for mass markets, while Finnish startup Donut Lab announces solid-state production readiness, driving an energy revolution.

Kenji·Feb 27, 2026·5 min read