Renova-Idemitsu JV Breaks Ground on 15-MW Battery

• Renova Inc and partners break ground on 15-MW/48-MWh lithium-ion battery system in Japan. With a 22% stake, Renova is the first to enter the grid storage battery market and will receive a subsidy from the Ministry of Economy, Trade and Industry. Operations to begin October 2025.

Renova Inc (TYO:9519) and partners Idemitsu Kosan Co Ltd (TYO:5019), NAGASE & Co Ltd (TYO:8012) and SMFL MIRAI Partners Co Ltd have broken ground on a 15-MW/48-MWh lithium-ion battery system in Japan. The project, executed by Himeji Energy Storage Facility Godo Kaisha, is the first from Renova when it comes to grid storage batteries, with the company having a 22% stake. Idemitsu has a controlling stake of 51% and will be in charge of operations, transaction in the electricity market and maintenance, while NAGASE and SMFL hold 22% and 5% stakes respectively. The JV will receive a subsidy from the Ministry of Economy, Trade and Industry, with operations commencing in October 2025.

What Benefits Will Japan's 15-MW/48-MWh Battery System Provide?

• The battery system will help address the shortage of electric power in the Himeji region of Hyogo Prefecture and will contribute to the stabilization of the local power grid.
• The battery system will store electricity from renewable sources such as solar and wind, allowing the region to use clean energy more effectively.
• The battery system will provide peak shifting, allowing electricity to be stored during times of low demand and then released when needed.
• The battery system will also provide ancillary services to the grid, such as frequency regulation and voltage support.
• The battery system will help reduce energy costs for the region by facilitating the trading of electricity in the market.