Tokyo Metro Embraces Renewable Energy with New PPA
Tokyo Metro, alongside Cosmo Eco Power and Cosmo Energy Solutions, has signed a pioneering off-site physical Power Purchase Agreement (PPA) to power its new comprehensive training center. This initiative marks the first instance of a subway company implementing such a contract that utilizes both terrestrial wind power and agrivoltaic solar energy.
The collaboration will initiate electricity supply in April 2026 and is projected to yield a carbon dioxide reduction effect of approximately 719 tons annually equivalent to the training center's electricity usage. The chosen energy sources will include the Aizuwakamatsu Wind Farm operated by Cosmo Eco Power, alongside agrivoltaic solar power from Eneglobal, acting as an aggregator.
This innovative scheme aims to enhance the share of hourly matching rates between electricity consumption and renewable production, ensuring a greener energy supply. During periods where wind and solar power cannot fully cover electricity demand, additional renewable energy sourced from Cosmo Eco Power’s contracts will fill the gap, ensuring a consistent supply of green energy.
By implementing these measures, Tokyo Metro is progressing towards its long-term environmental goal, titled
Metro CO₂ Zero Challenge 2050. They have set an ambitious target to reduce CO₂ emissions by 53% by 2030 (compared to 2013 levels) and aim for net-zero emissions by 2050.
In line with these goals, the group has already introduced energy-efficient vehicles and low-environmental impact equipment into their operations. The commitment does not stop here; Tokyo Metro aims to continue exploring various avenues, such as increasing the use of renewable energy sources, to achieve a decarbonized and circular society.
Overview of the Comprehensive Training Center
Located in Koto City, the training center encompasses a track stretching approximately 700 meters along with three mock stations, housed in a five-story training building. This facility is set to play a vital role in the operational training of staff, ensuring a high standard of service for Tokyo Metro’s users.
Aizuwakamatsu Wind Farm
Is situated in Fukushima Prefecture and boasts an impressive generation capacity of 16,000 kW. It is pivotal in supplying renewable energy to the Metro's operations through this pioneering agreement.
Eneglobal’s Agrivoltaic Solar Power Plant
Located in Ibaraki Prefecture, this facility has a generation capacity of 1,155 DC / 792 AC kW, showcasing the potential of integrating agricultural practices with energy generation, further supporting the initiative’s sustainability goals.
Overall, the collaboration between Tokyo Metro, Cosmo Eco Power, and Cosmo Energy Solutions marks a significant step toward enhancing sustainable energy practices in Japan's public transportation sector. The companies strive to contribute to regional community development, reflecting their commitment to promoting renewable energy and achieving carbon neutrality by 2050.