[Professional Perspective] If you don't know the rules regarding the "contract date and construction date" for the Cool Net Tokyo subsidy, you'll lose out!
Posted: May 2025, 7
What are the “pitfalls” that can result in subsidies not being granted?
The Tokyo Metropolitan Government's "Subsidy for Promoting the Installation of High-Insulation Homes and Solar Power Generation, etc." (commonly known as the Cool Net Tokyo Subsidy) is a system that provides subsidies for the installation of energy-saving equipment such as solar panels, storage batteries, highly insulated windows and insulation materials.
However, the most common failures seen when applying are:Not knowing the rules for the contract date and construction date.
For not following this ruleCases that are not covered.
If you sign a contract or start construction before applying in advance, you will be ineligible.
In this subsidy system,The applicant must not enter into a contract or commence construction work before completing the pre-application.There is a rule that:
- × Get a quote and make a verbal contract → Not OK if there is no written document
- × Signing the order form → Not allowed if not applied for in advance
- ○ Purchase orders and construction contracts must be signed after the application is submitted.
If this principle is violated, even if the construction meets the requirements,There is a possibility that no subsidy will be provided.
There are exceptions to the contract date rule!
In Coolnet Tokyo's application for this subsidy,
Every year Special Period Is provided.
In fiscal year 7 December 2025, 4 - February 1, 2025 until,
If you have signed a contract, you may still be eligible to apply!
Quotations and purchase orders can also be considered contracts
The subsidy office will scrutinize all documents that show "facts of agreements with businesses."
For example ...
- The quotation contains the exact amount, installation address, etc.
- Purchase orders and invoices must be submitted together
- In the case of a simple estimate, a separate "quote breakdown" must be submitted.
It is a good idea to prepare all quotations and contracts that list the contracts related to the equipment you are applying for.
Also, if such documents exist with a date that predates the advance application, there are cases where they are simply deemed to be a "contract already concluded."
Scheduling with construction companies and other subsidy applications is also necessary.
All applications for Coolnet Tokyo are made online, so if you have all the necessary documents and information,
In most cases, the pre-application process takes very little time.
However,
① Contracts and construction work must be stopped until the advance application is completed.
Needless to say, if you are applying just before signing a contract or the start of construction, you will definitely need to adjust the schedule.
② If you are applying for other subsidies, you will also need a confirmation notice for those subsidies.
It must be obtained before the performance report.
When applying for a system in conjunction with those of the national or other local governments, it is necessary to obtain the confirmation notices for those systems smoothly.
Please be aware that there have been cases where final notification letters from the national government or other local governments have not arrived in time for reporting performance results.
Summary: If you get the schedule wrong, you will have to pay the full cost yourself
When applying for a subsidy, there are many documents that cannot be resolved by simply correcting them later.
In the application for Coolnet Tokyo introduced this time,Rules regarding contract dates and start dates can lead to fatal mistakes that cannot be undone.
To ensure that you make the most of the subsidy, you should thoroughly understand the rules of the system before applying.The basic premise is to refrain from entering into contracts and placing orders in advance..
At the same time, it will also be necessary to coordinate schedules with other countries and local governments.
Our company has a track record of processing hundreds of applications to Coolnet Tokyo each year.
We will support you in filing your application, while also understanding common pitfalls.

