Peak Energy, one of Asia’s fastest-growing renewable energy developers, has successfully acquired a unique portfolio of ready-to-build (RTB) high-voltage solar projects in Japan.
The portfolio, which is set to come online between 2026 and 2028, will be integrated with battery storage to maximize its climate impact and provide cost savings for customers. The projects, located in various regions across Japan, including Tokyo and Tohoku, have a combined capacity of 48 MW. They are expected to generate nearly 60 GWh of zero-carbon electricity annually—enough to power approximately 15,000 households. Additionally, the solar plants will help prevent nearly 27,000 tonnes of CO2 emissions each year, which is equivalent to removing around 9,000 cars from the road.
The solar plants are scheduled to be operational between 2026 and 2027, with electricity sold to corporate clients through long-term power purchase agreements (PPAs). The fixed pricing of these PPAs, extending for over 20 years, will allow customers to immediately benefit from lower electricity bills and safeguard against long-term tariff fluctuations. Selected sites will also feature battery energy storage systems (BESS) paired with the solar installations, enabling customers to further reduce costs and extend their use of renewable energy into the evening.
This acquisition underscores Peak Energy’s expanding presence in Japan, following the earlier 2025 acquisition of another 11 MW portfolio of ready-to-build solar sites. Since 2022, the company has also co-owned a 28 MW solar plant in Kyushu and offers a range of energy solutions to corporate clients, including cost-effective on-site solar PPAs, off-site solar PPAs, and collocated solar + BESS PPAs.
Gavin Adda, CEO of Peak Energy, remarked, “This acquisition strengthens our position in Japan, where we are now uniquely positioned to provide large power consumers with affordable, clean energy at the scale and timing they need to meet their climate goals. I am especially excited about integrating storage into some of our sites, allowing us to offer time-shifted PPAs and support our most ambitious clients in achieving their 24/7 Carbon-Free Energy targets.”
