Did you know that when installing energy-efficient window frames in the Netherlands you can often receive a government subsidy? Through the ISDE scheme, the Dutch government contributes towards insulating glazing. In this article you’ll find the conditions and how to apply.
What is the ISDE subsidy?
The ISDE (Investeringssubsidie Duurzame Energie en Energiebesparing) is a national scheme run by the Dutch government. For insulating glazing — such as HR++ or triple glazing — you receive a fixed amount per m², provided the conditions are met.
Main conditions
- You replace existing glazing with HR++ or triple glazing that meets the U-value requirements;
- The glazing is usually combined with at least one other insulation measure (check the current requirements);
- The work is carried out by a professional company;
- You apply for the subsidy after the work has been completed and paid.
The exact amounts and conditions are adjusted every year. Always check RVO.nl for the current 2026 figures.
How much can you save?
The subsidy is a fixed amount per square metre of glazing and increases with better insulation (triple glazing yields more than HR++). On an average home this can mean a significant reduction of your investment in new windows.
How to apply
- Have energy-efficient window frames with insulating glazing installed by a professional company;
- Keep the invoice and proof of payment;
- Apply via mijn.rvo.nl using your DigiD;
- Receive the contribution in your bank account.
We help you free of charge
D-Kozijnen is happy to guide you through the entire application, so you are sure of the maximum contribution. Contact us without obligation or first have a look at our indicative window frame prices.
