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Project Big Stone Thermal Battery System

Sector: Geothermal • Location: Big Stone City, South Dakota, United States

Source: TipRanks

Project
Completed

Project Big Stone is a 5 gigawatt-hour, multi-day thermal battery system supplying 24/7 energy to POET's biofuels facility in Big Stone City, South Dakota. The project advanced from an empty lot to an operating asset in under 12 months and is one of the world's largest battery storage installations. It consists of more than 200 thermal batteries manufactured at Antora's San Jose gigafactory and su

Status
Closed
Sector
Geothermal, Energy Storage, Manufacturing (Industrial)
Location
Big Stone City, South Dakota, United States of America
Updated
22 Jul 2026
Source
TipRanks

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The project “Project Big Stone Thermal Battery System” is an infrastructure initiative in the Geothermal sector, located in Big Stone City, South Dakota, United States. Taiyo aggregates data on it from TipRanks.

Participants

Not available for this record.

Status

Original status

completed

Taiyo status

Closed

Taiyo last update

2026-07-22

Contact

Not available for this record.

Description

Description

Project Big Stone is a 5 gigawatt-hour, multi-day thermal battery system supplying 24/7 energy to POET's biofuels facility in Big Stone City, South Dakota. The project advanced from an empty lot to an operating asset in under 12 months and is one of the world's largest battery storage installations. It consists of more than 200 thermal batteries manufactured at Antora's San Jose gigafactory and supports over 300 jobs across manufacturing, construction, and operations.

Original sector

Energy Storage

Location

Country

United States of America (USA)

State

South Dakota

City

Big Stone City

Source

Source

TipRanks

URL

More Details

Record type

Project

Sector

Geothermal, Energy Storage, Manufacturing (Industrial)

Article published date

2026-05-26

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