Helios 104 MWh Tesla battery project
Sector: Power Generation (CCGT) • Location: Sapporo, Hokkaido, Japan
Source: ESS News
The Helios project is a 50 MW / 104 MWh battery energy storage system (BESS) located in Sapporo, Hokkaido, Japan. It uses Tesla Megapack 2XL units and operates as a fully merchant asset trading in Japan's wholesale power market. The project is classified as Extra High Voltage (EHV) and was built by Hokkaidenko Corporation, with construction starting in April 2024. It aims to participate in Japan's
- Status
- Closed
- Sector
- Power Generation (CCGT), Power Transmission, Commercial, Energy Storage
- Location
- Sapporo, Hokkaido, Japan
- Updated
- 22 Jul 2026
- Source
- ESS News
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Project Information
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 | The Helios project is a 50 MW / 104 MWh battery energy storage system (BESS) located in Sapporo, Hokkaido, Japan. It uses Tesla Megapack 2XL units and operates as a fully merchant asset trading in Japan's wholesale power market. The project is classified as Extra High Voltage (EHV) and was built by Hokkaidenko Corporation, with construction starting in April 2024. It aims to participate in Japan's balancing market in 2026 and the capacity market later in the decade. |
Original sector | Energy Storage |
Location
Country | Japan |
State | Hokkaido |
City | Sapporo |
Source
Source | ESS News |
URL |
More Details
Record type | Project |
Sector | Power Generation (CCGT), Power Transmission, Commercial, Energy Storage |
Article published date | 2025-12-04 |
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