Microsoft has committed to a major expansion of its renewable energy portfolio in Japan through long-term agreements totaling 100 megawatts (MW) of solar capacity. The deal is structured as Power Purchase Agreements (PPAs) with Japanese renewable developer Shizen Energy. The 100 MW comes from four separate solar projects, spread across two regions in western Japan — Kyushu and Chugoku.
One of the four projects is already operational, while the others are under construction. All plants have reached financial close, meaning the financing is secured and development can proceed. Microsoft’s arrangement spans 20 years, ensuring stable, long-term access to clean power.
The solar portfolio includes the previously commissioned Inuyama solar plant in Aichi Prefecture, which was the company’s first PPA deal in Japan. That project outputs around 25 MW (AC) / 31 MW (DC). The new agreements add three more projects, each with similar term length. One of the under-construction plants is being built by Shizen’s wholly-owned engineering and construction arm, while all plants (existing and upcoming) will be managed by Shizen’s asset operations group.
Operationally, the power generated will likely serve Microsoft’s data centers and operations in Japan. The deal aligns with Microsoft’s goals to increase its consumption of renewable energy and support its decarbonization targets. For Shizen Energy, this represents a significant scale creation in its PPA business, demonstrating growing confidence from both domestic and international financiers in Japan’s clean energy market.
From a strategic perspective, the deal helps Japan move forward on corporate renewable procurement, particularly in solar power, where large PPAs still face challenges. Issues such as finding suitable land, managing grid interconnection, securing long-term finance, and ensuring the projects are economically viable have historically limited scale. By locking in long term off-take and financing, Microsoft and Shizen are helping to address several of those hurdles.
