Announced details
All three battery storage facilities have commenced operations. The start dates for trading in the balancing market were 1 December 2025 for the Gunma Ota Battery Storage Facility, 16 October 2025 for the Gunma Isesaki No. 1 Battery Storage Facility, and 6 April 2026 for the Gunma Isesaki No. 2 Battery Storage Facility.
The company develops and operates grid-scale battery storage facilities and trades in the wholesale electricity market and the balancing market.
Kitachiki-cho, Isesaki, Gunma Prefecture
The business is expected to contribute to profit from its first year (the fiscal year ending March 2026). However, the existing earnings forecast conservatively assumes that it will be loss-making.
The company does not address Contract Value / Offering price.
“Outlook for Turning the Grid-Scale Battery Storage Business Profitable in Its First Year and Future Growth Strategy,” announced on 22 December 2025
| Item | Details |
|---|---|
| Names of Products / Services Covered | Port Gunma Isesaki No. 2 Battery Storage Facility, Grid-scale battery storage business |
| Relationship with the Company | The company develops and operates grid-scale battery storage facilities and trades in the wholesale electricity market and the balancing market. |
| Launch date | 6 April 2026 (actual: start of trading in the balancing market) |
| Applicable area | Balancing electricity supply and demand, Supporting the expansion of renewable energy, including solar and wind power generation |
| Location | Kitachiki-cho, Isesaki, Gunma Prefecture |
| Location scale | Battery output: approximately 2 MW, Battery capacity: approximately 8 MWh |
| Usage history | All three battery storage facilities have commenced operations. The start dates for trading in the balancing market were 1 December 2025 for the Gunma Ota Battery Storage Facility, 16 October 2025 for the Gunma Isesaki No. 1 Battery Storage Facility, and 6 April 2026 for the Gunma Isesaki No. 2 Battery Storage Facility. |
| Impact on Business Performance | The business is expected to contribute to profit from its first year (the fiscal year ending March 2026). However, the existing earnings forecast conservatively assumes that it will be loss-making. |
| Source | “Outlook for Turning the Grid-Scale Battery Storage Business Profitable in Its First Year and Future Growth Strategy,” announced on 22 December 2025 |
Items this document does not state (9)
These are items the company does not state in this document. We do not leave them blank, nor fill them in from other sources or by inference.
The reasons the company gives
The company's own explanation, not something inferred from the numbers.In line with the initial plan, the company is proceeding with its assessment of entering the grid-scale battery storage business and confirming its profitability through trading across multiple markets. The company explained that, based on the smooth start of operations and trading activity, the business is now expected to contribute to profit from its first year and be profitable.