ISDE: Zonneboiler woningeigenaren Grant

About this grant

The ISDE (Investeringssubsidie duurzame energie en energiebesparing) subsidy for homeowners covers solar thermal water heaters (zonneboilers) installed in Dutch homes. It is administered by RVO on behalf of the Ministry of Economic Affairs and Climate. The page presents it as an open, application-based subsidy rather than a competitive call. The subsidy supports the purchase and installation of a new solar water heater, made up of collectors, a storage tank and a circulation pump. Used or second-hand products are not eligible. The installation must be carried out by a (bouw)installatiebedrijf, not by the homeowner. The amount depends on the collector surface area and the storage tank volume. The page gives an average range of about EUR 300 to EUR 1,750. Installing insulation within 24 months of the heater roughly doubles the subsidy for that insulation measure. Applicants must apply within 24 months after installation and provide proof of purchase and payment, the installation date, the addresses of the homeowner and installer, and the installer's contact person. The product should appear on the published meldcodelijst of approved heaters, which gives a meldcode and the proposed subsidy amount. If the product is not listed, technical documentation must be submitted, and the application may be rejected if the product does not meet requirements. Applications require DigiD (app or SMS verification).

Eligibility

Eligible applicants are homeowners (woningeigenaren) who install a new solar water heater in a dwelling built before 1 January 2019, or who can show that the environmental permit for the building was applied for before 1 July 2018. The installation must be carried out by a professional installation company. Used or second-hand products are excluded. The application must be submitted within 24 months of installation. The page does not state any income, organisation-type or prior-recipient restrictions beyond these conditions.

How it's scored

The page does not describe a competitive scoring process. Eligibility is determined by checking the conditions above, including product approval against the meldcodelijst or submitted technical documentation, and the subsidy amount is set by collector area and storage volume.

Key requirements

• ✓Applicant must be a homeowner (woningeigenaar) of a dwelling in the Netherlands
• ✓Subsidy covers installation of a solar thermal water heater (zonneboiler)
• ✓Applications must be submitted on or before 31 December 2030

Frequently asked questions

How much funding does Rijksdienst voor Ondernemend Nederland (RVO) offer?

ISDE: Zonneboiler woningeigenaren offers $330 – $1,925.

Who can apply for ISDE: Zonneboiler woningeigenaren?

Eligibility covers organisations in NL; individual. See the eligibility criteria above for the full conditions.

Relevant sectors

About this sector

Renewable energy funding covers solar, wind, hydropower, geothermal and bioenergy, from early research to grid-scale deployment. Public money tends to back demonstration, grid connection and access to energy in emerging markets, while procurement notices buy installation, operation and maintenance. Calls often ask for proof of resource assessment, permitting progress and local partners.