The grid is the backbone of modern civilisation, yet it was built for predictability. Renewables made it clean, but unstable. To decarbonise completely, stability must return.
Bubble is high-temperature compressed-air energy storage. It stores energy as pressurised air and heat, at 200 bar and over 1000 °C, using only air, steel, and rock. No lithium. No degradation. No fire risk. Engineered for fifty years, not five.
Our mission is simple: firm the renewable grid.
Bubble is advancing toward TRL-6 demonstration in the Netherlands. We are seeking aligned partners who share a long-term view of the energy transition.