Fluence signed a memorandum of understanding (MoU) with Eneres to provide a battery storage trading solution in the Japanese market, the Siemens and AES-owned BESS integrator and software provider announced on July 22, 2025.
Under the MoU, the companies aim to combine Eneres’ local market expertise with Fluence’s Mosaic software to automate and optimize trading of their customers’ battery storage assets. The partnership follows Fluence’s January 2025 opening of its Tokyo office and subsequent announcement of plans to begin offering its Smartstack BESS units and Mosaic in the country.
The deal highlights the potential for foreign players with experience in advanced power markets like Europe and Australia to combine their technical capabilities with market know-how, reputation, and customer networks of well-established Japanese companies, which often lack trading optimization expertise due to Japan’s still-nascent power market.
In a similar case, Czechia-based aggregator Second Foundation invested in Tokyo-based renewable developer and services company IQg last year to establish a foothold in the Japanese market.
Eneres, established in December 2004, is a joint venture between KDDI subsidiary au Energy Holdings and J-POWER. It primarily offers power procurement optimization for corporate consumers and balancing services for retailers.
