Announced details
The second grid-scale battery storage facility operated by ADW as of 31 August 2026
A business operated by 株式会社エー・ディー・ワークス. 株式会社エー・ディー・ワークス is a subsidiary of 株式会社ADワークスグループ.
Mashiki, Kumamoto Prefecture
The company positions this business as a medium- to long-term growth business and aims to expand revenue opportunities. No amount of the impact on earnings from this individual project is disclosed. Estimated operating revenue of approximately ¥800 million to ¥1.3 billion per year and estimated unrealized gain of ¥1.7 billion are company estimates and are not earnings forecasts or similar projections.
The company does not address Contract Value / Offering price.
Yano Research Institute Co., Ltd., “Survey of the Battery Storage Facility Business Market (2025)”
GX Implementation Promotion Office, Cabinet Secretariat, “Sector-Specific Investment Strategies (3)”
Agency for Natural Resources and Energy, “Toward the Rapid Grid Connection of Grid-Scale Batteries”
| Item | Details |
|---|---|
| Names of Products / Services Covered | ADW Kumamoto Mashiki Battery Storage Facility, Grid-scale battery storage business |
| Relationship with the Company | A business operated by 株式会社エー・ディー・ワークス. 株式会社エー・ディー・ワークス is a subsidiary of 株式会社ADワークスグループ. |
| Launch date | Wholesale electricity market: operations to begin promptly after handover on 31 August 2026 (actual/planned) / Balancing market: operations scheduled to begin around the end of November 2026 |
| Applicable area | Wholesale Electricity Market, Balancing Market, Balancing fluctuations in renewable energy supply and demand |
| Location | Mashiki, Kumamoto Prefecture |
| Location scale | Output: approx. 2 MW / Capacity: approx. 8 MWh |
| Usage history | The second grid-scale battery storage facility operated by ADW as of 31 August 2026 |
| Impact on Business Performance | The company positions this business as a medium- to long-term growth business and aims to expand revenue opportunities. No amount of the impact on earnings from this individual project is disclosed. Estimated operating revenue of approximately ¥800 million to ¥1.3 billion per year and estimated unrealized gain of ¥1.7 billion are company estimates and are not earnings forecasts or similar projections. |
| Source | Yano Research Institute Co., Ltd., “Survey of the Battery Storage Facility Business Market (2025)”, GX Implementation Promotion Office, Cabinet Secretariat, “Sector-Specific Investment Strategies (3)”, Agency for Natural Resources and Energy, “Toward the Rapid Grid Connection of Grid-Scale Batteries” |
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.Following the smooth operation of the No. 1 facility, the company aims to accumulate operating experience and expertise at multiple locations and expand revenue opportunities.