The use of renewable energy has both social and economic benefits, and the Tokyo Metropolitan Government is promoting the use of renewable energy in the many apartment complexes in the city.
We will now provide support for the installation of substation equipment in new and existing apartment complexes. We would also like to inform you that we will provide additional support for the installation of solar power generation equipment.

Business summary

Subsidies will be provided to recipients who introduce the “Registered Business Plan (100% renewable electricity supply plan through high-voltage bulk power reception)” published on the Cool Net Tokyo website.

Grant amount, grant requirements, etc.

When applying, the owner or management association of the apartment complex and the high-voltage bulk electricity receiving business operator must agree on the registered business plan before submitting the application.

Grant recipients	Subsidy unit price	upper limit	Requirements
Substation equipment, etc.	Two-thirds of equipment and construction costs	8.5 million yen/building or 85,000 yen/unit	・The facility is related to the services provided by a high-voltage bulk electricity receiving business registered with Cool Net Tokyo. ・The substation equipment must comply with the standards for private electrical facilities under the Electricity Business Act, etc.
Solar power generation equipment (existing)	120,000 yen/kilowatt	Power output less than 50 kilowatts	The equipment must be installed in an apartment building for which a high-voltage bulk electricity receiving contract that is eligible for subsidies is concluded, etc.
Solar power generation equipment (new construction)	100,000 yen/kilowatt
Mounting construction top-up	200,000 yen/kilowatt		Limited to installation on flat roofs of apartment buildings, etc.
Waterproofing work	180,000 yen/kilowatt		Limited to installation on flat roofs of existing apartment buildings, etc.

Grant recipients

1）Substation equipment, etc.

A high-voltage bulk electricity receiving business operator whose business plan is registered with Cool Net Tokyo
*Registered business plans are cheaper plans that take subsidies into account.

2）Solar power generation equipment (including mounting and waterproofing)

1) Owners and management associations of apartment complexes where the system will be introduced

Grant application period

May 29, 2024 to March 31, 2025 (ends when the total application amount reaches the upper limit)

Budget amount

Approximately 360 million yen

Application reception desk

Tokyo Metropolitan Environmental Public Corporation, Tokyo Metropolitan Center for the Promotion of Activities to Prevent Global Warming (Cool Net Tokyo)

Business homepage

Homepage (Link to external site)

This project is part of the “Future Tokyo Strategy.” Strategy 14: “Zero Emission Tokyo Strategy”

Contact information
(Regarding the subsidy system)
Environment Bureau, Climate Change Division, Household Energy Policy Division
Tel: 03-5388-3709
(Regarding application acceptance)
Tokyo Metropolitan Environmental Public Corporation, Tokyo Metropolitan Global Warming Prevention Activities Promotion Center (Cool Net Tokyo)
Tel: 03-5990-5159