Kawasaki begins sending surplus solar power from municipal schools into the city

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Kawasaki City began supplying surplus solar electricity generated at municipal schools to users in the city on October 16, 2026.

The first three schools are expected to provide about 60 MWh a year, roughly equal to the annual use of 20 households, with gradual expansion planned.

Solar generation is operating at 69 of the city's 176 municipal schools. Toshiba balances supply and demand, and Kawasaki Mirai Energy sells the electricity to public facilities and businesses.

Schools' surplus solar power now goes to the city

On October 16, 2026, Kawasaki City began supplying surplus solar electricity generated at municipal schools to public facilities and businesses in the city.

Previously, the electricity was primarily consumed at the schools themselves. The new arrangement keeps locally generated renewable energy in local use.

First 3 schools, about 60 MWh a year

The program starts with three schools and an expected annual supply of about 60 MWh. Kawasaki City says that is equivalent to the annual electricity use of roughly 20 households.

Solar equipment is currently operating at 69 of Kawasaki's 176 municipal schools under the School Power Plant program. The city plans to expand the number of schools selling surplus power gradually.

Four partners, including Toshiba, deliver it

Four parties take part. Municipal schools generate and first consume the solar electricity. TN Cross installed the solar equipment and batteries. Toshiba, which has a base in Saiwai Ward, balances surplus output against demand. Kawasaki Mirai Energy then sells the electricity to public facilities and businesses in the city.

Kawasaki Mirai Energy combines locally generated electricity from waste incineration, schools and home solar systems to build a local renewable-energy cycle.

Next: studying battery use

Kawasaki City, Kawasaki Mirai Energy and TN Cross will study more effective use of the batteries installed at schools.

They will analyze generation, electricity demand and battery operation to determine how stored power can support efficiency, cost savings and decarbonization.

Household contracts do not change

This announcement does not automatically change household electricity contracts. The city has also announced no new procedure for students or families.

For questions about the School Power Plant program, call the Kawasaki City Decarbonization Strategy Office at 044-200-2956. For energy-management questions, call 044-200-1222.