Grid-scale energy storage is now a given, but the dominant battery solution only serves short-term storage needs, leaving a significant long duration storage gap solved only by site-limited solutions, such as pumped hydro.
We have combined our expertise in supercritical carbon dioxide (sCO2)-based power cycle technology and components with safe, low-cost, highly-scalable storage media to deliver a superior Electro-thermal energy storage (ETES) — where excess generation and off-peak electricity is converted and stored as heat and is later converted back to electrical power.
Electro-thermal energy storage(ETES) offers key advantages over other advancing technologies, including:
- Low capital cost
- Full operational flexibility with no limit to cycling duty
- Safe, environmentally benign materials
- Zero augmentation costs
- Higher projected reliability
- Low environmental impact
We are the world leader in developing sCO2 systems for power generation, which form the core of the ETES system. We were recently awarded a grant from the US Department of Energy ARPA-E DAYS Initiative to further develop the ETES system.