SustainX
Oil and GasNew Hampshire, United States2-10 Employees
SustainX, based in Seabrook, New Hampshire, develops energy storage technology that uses isothermal cycling to store and release energy without relying on underground caverns or fossil fuel combustion. The system is designed to be site-flexible, enabling power- and energy-scale storage that can integrate with diverse energy assets and grid needs. Its engineering emphasizes a long operating life and a lower levelized cost of energy compared with competing storage approaches. SustainX operates in the oil and gas sector, and its technology is aimed at customers seeking emissions-free, scalable storage to support power systems. A notable development in 2021 was the introduction of a new string inverter, the PVS-10/33-TL, illustrating ongoing product expansion and flexibility.