Energy Storage

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.

Learn more about our ETES system ›

Key advantages

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

Learn more about ETES benefits ›

Join us

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.

Find out how you can partner with us ›

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