Project Big Stone Thermal Battery System
Sector: Geothermal • Location: Big Stone City, South Dakota, United States
Source: IndexBox
Project Big Stone is a 5 GWh multi-day thermal energy storage system using proprietary thermal battery technology by Antora. It is located at a biofuels production facility operated by POET Bioprocessing in Big Stone City, South Dakota. The system stores heat in solid carbon blocks heated to 2,400°C, providing continuous heat and electricity to reduce costs and emissions for industrial processes.
- Status
- Under Construction
- Sector
- Geothermal, Energy Storage, Power Generation (CCGT), Manufacturing (Industrial)
- Location
- Big Stone City, South Dakota, United States of America
- Updated
- 22 Jul 2026
- Source
- IndexBox
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Project Information
Participants
| Not available for this record. |
Status
Original status | commissioned |
Taiyo status | Under Construction |
Taiyo last update | 2026-07-22 |
Contact
| Not available for this record. |
Description
Description | Project Big Stone is a 5 GWh multi-day thermal energy storage system using proprietary thermal battery technology by Antora. It is located at a biofuels production facility operated by POET Bioprocessing in Big Stone City, South Dakota. The system stores heat in solid carbon blocks heated to 2,400°C, providing continuous heat and electricity to reduce costs and emissions for industrial processes. The project aims to improve operational efficiency and lower energy expenses for the biofuels plant. |
Original sector | Energy Storage |
Location
Country | United States of America (USA) |
State | South Dakota |
City | Big Stone City |
Source
Source | IndexBox |
URL |
More Details
Record type | Project |
Sector | Geothermal, Energy Storage, Power Generation (CCGT), Manufacturing (Industrial) |
Article published date | 2026-05-23 |
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