Everylab Inc. (Headquarters: 4-8 Shimo-Kameda, Koriyama City, Fukushima Prefecture; Representative Director: Tenmon Kikuchi) has launched the "Regional Energy Infrastructure Reconstruction Project" with the aim of solving two social issues: the worsening vacant home problem nationwide and the shortage of power adjustment capacity accompanying the spread of renewable energy. This project is an initiative to utilize vacant homes and idle land to install grid-scale battery storage systems and regenerate them as new regional power infrastructure. We will begin by expanding in the Tohoku region, primarily Fukushima, Miyagi, and Yamagata prefectures, aiming to develop 100 sites in the first year and build a 100 MWh scale battery storage network within three years. Subsequently, we will proceed with nationwide expansion. Grid-scale battery storage utilizing vacant home sites (image) Transforming the Vacant Home Problem from a "Liability" to a "Regional Asset" The number of vacant homes in Japan exceeds 9 million, reaching a record high. The increase in vacant homes creates numerous social issues, including landscape deterioration, increased crime and disaster risks, fixed asset tax burdens, and inheritance problems. On the other hand, the introduction of renewable energy sources such as solar and wind power is rapidly advancing towards the realization of a decarbonized society, but a shortage of adjustment capacity to absorb fluctuations in power generation is a challenge. Based on the concept of "transforming unused real estate into power infrastructure that supports the region," Everylab is challenging a new business model that simultaneously solves the vacant home problem and energy challenges. If battery storage systems of the 200 kWh class were installed in just 1% of the over 9 million vacant homes nationwide, it would be possible to form a distributed battery storage network of approximately 18 GWh. This is equivalent to the annual electricity consumption of about 4