Polarstar Energy K.K. grows portfolio through successful LTDA bid for 40MW storage project
Key facts
- Polarstar Energy K.K. grows portfolio through successful LTDA bid for 40MW storage project
- Polarstar Energy has been selected in OCCTO’s 3rd LTDA auction for a 40MW grid-scale battery project in Kagoshima. This success brings their total capacity-based revenue portfolio to over 120MW and approximately 500MWh. The project will utilize non-lithium technology with 6-hour discharge duration.
- Source: PR Times
- Date: June 9, 2026
Direct answer
Polarstar Energy has been selected in OCCTO’s 3rd LTDA auction for a 40MW grid-scale battery project in Kagoshima. This success brings their total capacity-based revenue portfolio to over 120MW and approximately 500MWh. The project will utilize non-lithium technology with 6-hour discharge duration.
- Citation
- Polarstar Energy K.K. grows portfolio through successful LTDA bid for 40MW storage project (June 9, 2026), PR Times
- Source
- PR Times
- Date
- June 9, 2026
Polarstar Energy has been selected in OCCTO’s 3rd LTDA auction for a 40MW grid-scale battery project in Kagoshima. This success brings their total capacity-based revenue portfolio to over 120MW and approximately 500MWh. The project will utilize non-lithium technology with 6-hour discharge duration.
📋 Article Processing Timeline
- 📰 Published: June 9, 2026 at 21:11
- 🔍 Collected: June 9, 2026 at 12:21
- 🤖 AI Analyzed: June 10, 2026 at 19:28 (31h 7m after Collected)
Polarstar Energy K.K. (“Polarstar”) is pleased to announce that, through its wholly owned subsidiary 合同会社蓄電所1号, it has been successfully selected to execute a capacity contract in OCCTO’s 2025 Long Term Decarbonised Power Sources Auction (“LTDA”) for its 40MW project in Kagoshima.
Having secured two projects in the second round of OCCTO’s LTDA, Polarstar now has a portfolio of over 120MW and almost 500MWh of projects with long-term, capacity-based revenue contracts, and a growing pipeline of grid access and land rights for further development. The most recently awarded project will use non-lithium technology and a 6-hour duration, supporting Japan’s technology diversification and long-duration energy storage goals.
Project Overview:
- Connected Capacity: 40MW
- Contracted Capacity: 36.7MW
- Storage Capacity: 240MWh
- Prefecture: Kagoshima
- Technology: Non-Lithium
- Bidding Entity: 合同会社蓄電所1号
Polarstar CEO Cameron Gilhome stated, “We are looking forward to our project enabling increased use of renewable energy by reducing solar curtailment in Kyushu and improving local grid stability. We are excited to deliver this and all of our projects through construction and into operations, supporting Japan’s decarbonization goals.”
Having secured two projects in the second round of OCCTO’s LTDA, Polarstar now has a portfolio of over 120MW and almost 500MWh of projects with long-term, capacity-based revenue contracts, and a growing pipeline of grid access and land rights for further development. The most recently awarded project will use non-lithium technology and a 6-hour duration, supporting Japan’s technology diversification and long-duration energy storage goals.
Project Overview:
- Connected Capacity: 40MW
- Contracted Capacity: 36.7MW
- Storage Capacity: 240MWh
- Prefecture: Kagoshima
- Technology: Non-Lithium
- Bidding Entity: 合同会社蓄電所1号
Polarstar CEO Cameron Gilhome stated, “We are looking forward to our project enabling increased use of renewable energy by reducing solar curtailment in Kyushu and improving local grid stability. We are excited to deliver this and all of our projects through construction and into operations, supporting Japan’s decarbonization goals.”
FAQ
What is the name of the company that won the bid for the 40MW storage project in Kagoshima?
Polarstar Energy K.K. won the bid for the 40MW storage project in Kagoshima.
Which auction selected Polarstar Energy for the 40MW battery project in Japan?
OCCTO’s 3rd LTDA auction selected Polarstar Energy for the 40MW battery project.
What is the total capacity-based revenue portfolio of Polarstar Energy after this project?
Polarstar Energy's total capacity-based revenue portfolio is now over 120MW.
How many megawatt-hours of energy storage will Polarstar Energy have with this expansion?
Polarstar Energy will have approximately 500MWh of energy storage capacity.
What type of technology will be used in the 40MW Kagoshima battery project by Polarstar Energy?
The 40MW Kagoshima battery project will utilize non-lithium technology with 6-hour discharge.