ISDE – Sustainable Energy Investment Grant

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The Sustainable Energy Investment Grant (ISDE) stimulates households and companies to use less gas and more sustainable heat. This scheme subsidies the purchase of solar boilers and heat pumps.

The scheme can be applied for by various parties. However, the rules differ per party.

Conditions for Investment in Heat Pumps and Solar Boilers

  • Heat pumps that extract warmth from, for example, air, soil, or groundwater. A solar boiler is a combination of a solar collector and a hot water boiler. Both serve to heat a room or to generate warm (tap) water.
  • Solar boilers should have a maximum total aperture area of 200 m2.
  • It is not possible to apply for a grant for devices that are installed in buildings for which the environmental permit has been applied for after 30 June 2018. There is a transitional arrangement for private individuals in this regard.
  • Pellet stoves and biomass boilers will be excluded from the scheme from 2020 onwards.
  • In addition to devices included on the list, larger installations can also be applied for. This requires an additional description.

Private Individuals

An application is possible for:

  • Private individuals with a BSN number.
  • Foreign individuals with a (holiday) home in the Netherlands.

It is important to note that the application must be made after purchase, payment, and installation of the device. This is different for business users.

Business Users

Only business users with a registration number from the Netherlands Chamber of Commerce can apply (for exceptions, see below):

  • Companies and self-employed
  • Homewoner associations and housing corporations
  • Partnerships, foundations, and associations
  • Municipalities, provinces, and public bodies as market parties or owners/tenants of movable and immovable property
  • Applications should be made prior to purchase of the device
  • Private, commcercial landlords (of homes and business premises; no registration number from the Netherlands Chamber of Commerce required)
  • Foreign business parties who wish to install a device in the Netherlands.

Grant Amounts and Budgets

The amount of the grant depends on the type of device that is being investigated in. Indicatively, the grant amount for a heat pump is between €500 and €2,500. For the solar boiler this will be €500.


The ISDE scheme runst until 31 December 2020.

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This fact sheet aims to provide a quick overview of the objectives, structure and conditions of this subsidy scheme. No conclusions can be drawn from this information. Moreover, this document has no legal status.

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