Second Foundation acquires Trina Solar’s Japan solar and BESS development platform amid vertical expansion

January 21, 2026
Trina Solar Japan Energy
Trina Solar sold the unit as it shifts geographic focus of its development activities. (Image: Trina Solar Japan Energy)

Second Foundation Japan acquired Trina Solar Japan Energy’s solar and battery storage project development platform, the company’s partner IQg announced on January 21, 2026.

“By further adding additional BESS and solar projects as well as an experienced development and EPC team to our trading, aggregation, and asset management capabilities, we are strengthening our ability to deliver integrated renewable energy and storage solutions,” said Second Foundation Japan’s COO Michal Skalsky, noting that the acquisition is an important element in the company’s long-term strategy in the country.

The President of Trina Solar’s project development unit, Linhui Sui, said the sale comes as the company is shifting its development focus to other countries to “achieve better scalability, potential, and synergies with our upstream business units.”

According to its website, Trina Solar Japan Energy completed over 200MW of solar projects in Japan as of April 2023. Since then, it has also secured feed-in-premium (FIP) contracts for several projects through auctions, commissioned a 2.3MW agrisolar power plant in Kyoto, and signed its first PPA in the country, a 20-year off-site deal with Equinix for a 30MW asset under development in Hokkaido.

Second Foundation entered the Japanese market in May 2023, when it launched energy trading and aggregation activities through its subsidiary Trisolaris GK, now Second Foundation Japan. In 2024, the Czechia-based company’s Japan unit formed a capital and business alliance with IQg, investing 450 million yen in the Tokyo-based renewable developer and jointly establishing Nihon Obno LLC to develop solar and battery projects.

The transaction follows Virya Energy’s recent acquisition of BayWa r.e.’s Japan solar platform and is part of a stream of activity surrounding international players’ readjust of focus and reassessment of opportunities and challenges associated with the country’s shift away from development centered around the feed-in-tariff (FIT) scheme to a market-based model centered around PPAs and battery storage.

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