Housing subsidies

Coolnet Tokyo (Enhancement project to promote zero initial cost residential solar power generation)

Updated: July 2026, 5


CoolNet Tokyo (Enhancement Project to Promote Zero Initial Costs for Residential Solar Power Generation) Subsidy Application Assistance Service

Service

This subsidy offers homeowners the advantage of installing equipment with zero initial cost and receiving a full refund of the grant. Businesses also benefit from this, as it makes it easier to propose their services to customers, leading to increased contract acquisition and business expansion.

Business period

From fiscal year 4 to fiscal year 12 (grant payments will continue until fiscal year 14)

budget amount

Approximately 110 billion yen

Deadline for application for issuance

Until one year after the date of signing the zero-initial-cost service contract, or until March 31, 13 (Monday), whichever comes first.

Projects eligible for subsidies

This service, which installs solar power generation systems and other related equipment with zero initial cost to homeowners, is a business plan registered with the Tokyo Metropolitan Environmental Public Corporation.

Grant recipients

Businesses that install solar power generation systems for homeowners with zero initial cost through leasing, electricity sales, roof leasing, and self-ownership models.

Fiscal year 8 application period

The information for fiscal year 2026 has not yet been updated.
The Reiwa 7 fiscal year ran from April 1, 2025 to March 31, 2026.

Subsidy amount (subsidy unit price)

Source: Coolnet Tokyo 

Benefits of hiring us

Keeping up-to-date with the latest information on legal revisions, etc.

 We have a system in place to quickly grasp and respond to the latest information that affects our business, including subsidy rules, local government regulations, and changes to related ordinances.

Thorough deadline management

We support schedule management to tight project completion deadlines, allowing employees to focus on their core business.

High-precision document creation and reduction of the risk of errors

We minimize the risk of rejection due to deficiencies by providing appropriate advice on tedious document creation, such as expense calculations and consistency checks of drawings and estimates.

Accurate consulting based on specialized knowledge

We provide optimal advice by leveraging our knowledge gained from understanding complex institutional rules and our past achievements.

Process to receive subsidy

The repair and diagnostic company will submit an application to our company (see the diagram below).

* If a subsidy application is handled by someone other than an administrative scrivener, it may be in violation of the law.

Reward table

We will inform you of the compensation for supporting your subsidy application, depending on the amount of the subsidy, as follows:
Calculation is based on a step-wise formula (excess progressive).

SubsidyRemuneration amount (tax included)
Less than 500 millionSubsidy amount x 14% ~
501 million to less than 1,000 millionSubsidy amount x 8% ~
1,001 million to less than 3,000 millionSubsidy amount x 4% ~
3,001 or moreSubsidy amount x 1%~

One case
In the case of a subsidy of 1,000 million yen

  • 500 million yen x 14% = 70 yen
  • 500 million yen x 8% = 40 yen
    70 + 40 = 1,100,000 yen (tax included)

*Minimum remuneration: 200,000 yen (tax included)

*Depending on the number and content of your request, we may be able to offer a volume discount from the above amount.

*We will flexibly adjust support content (scope of support) and fees upon consultation.

Our support record

Our specialized team handles more than 2,500 subsidy applications a year and will support you according to your needs.

Additionally, if you have a large number of requests, we can also form a dedicated team.

    Free consultation available!
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    Free consultation available!
    Contact Us