ESS Inc. Energy Base Long-Duration Flow Battery Project
Sector: Metal • Location: Arizona, United States
Source: Energy-Storage.News
ESS Inc. is developing the Energy Base, a long-duration flow battery solution targeting data centres and large utility-scale renewable energy installations. The project involves a 5MW/50MWh (10-hour duration) Energy Base project for an Arizona public utility, expected to sign a power purchase agreement if contract negotiations conclude successfully in September 2025. The project aims to leverage i
- Status
- Prospective
- Sector
- Metal, Power Generation (CCGT), Energy Storage, Power Transmission, Steel
- Location
- Arizona, United States of America
- Updated
- 22 Jul 2026
- Source
- Energy-Storage.News
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Project Information
Participants
| Not available for this record. |
Status
Original status | Planned |
Taiyo status | Prospective |
Taiyo last update | 2026-07-22 |
Contact
| Not available for this record. |
Description
Description | ESS Inc. is developing the Energy Base, a long-duration flow battery solution targeting data centres and large utility-scale renewable energy installations. The project involves a 5MW/50MWh (10-hour duration) Energy Base project for an Arizona public utility, expected to sign a power purchase agreement if contract negotiations conclude successfully in September 2025. The project aims to leverage iron and saltwater electrolyte technology for long-duration energy storage. |
Original sector | Energy Storage |
Location
Country | United States of America (USA) |
State | Arizona |
Source
Source | Energy-Storage.News |
URL |
More Details
Record type | Project |
Sector | Metal, Power Generation (CCGT), Energy Storage, Power Transmission, Steel |
Article published date | 2025-05-22 |
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