For home insulation and designated renewable energy installations, extensive national and regional subsidy schemes are operational in 2026. Financial compensation depends on the specific measure, square meters installed, product registration code (meldcode), execution date, property characteristics, and personal circumstances. Always verify the current criteria prior to commissioning work.
As an experienced general contractor in the northern Netherlands, Heidstra Bouw regularly undertakes energy efficiency retrofits across Friesland, Groningen, and Drenthe, assisting homeowners with the correct technical specifications and meldcodes for a smooth grant application.
Key subsidies at a glance
| Subsidy / Scheme | Target Group | Financial Allowance | Key Condition |
|---|---|---|---|
| ISDE (RVO) | Homeowners throughout the Netherlands | Fixed grant per measure and verified meldcode | Execution and application must satisfy current RVO criteria |
| Nij Begun Insulation Scheme | Groningen and three North Drenthe municipalities | Up to €10,000 without an insulation plan; with an approved plan 50% up to €20,000 or 100% up to €40,000 depending on criteria | Verification through official portal and formal insulation plan where mandated |
| Local Municipal Schemes | Varies per municipality | Varies per local regulation | Verify target audience, budget cap, and application window with local council |
| National Energy Saving Loan (Energiebespaarlening) | Qualifying property owners | Low-interest loan; rates and terms vary | Check current criteria via the Nationaal Warmtefonds |
ISDE Subsidy: How does it work in practice?
The Investment Subsidy for Sustainable Energy and Energy Conservation (ISDE) awards fixed euro amounts for measures meeting rigorous technical standards. RVO publishes minimum surface area thresholds, Rd thermal values, and specific requirements for each measure. The grant rate for insulation doubles when you execute more than one insulation measure within a 24-month window, or combine insulation with a heat pump, solar thermal water heater, or district heating connection. Starting in 2026, homeowners can also claim a one-time €400 grant for energy-efficient mechanical ventilation installed in combination with insulation. Ventilation alone does not trigger the doubled insulation rate. Always utilize RVO's official calculation tool and meldcode registries rather than assuming a generic percentage.
Sustainability retrofits in Friesland, Groningen, and Drenthe
The northern provinces contain a high concentration of detached and semi-detached residences constructed between 1960 and 1985. These homes typically possess cavity walls, but roof pitches and ground floors are often uninsulated or poorly insulated.
- In Friesland (building company Friesland), demand is particularly high for roof insulation and high-performance window replacements in village homes and traditional farmhouses.
- In Groningen (building company Groningen), sustainability retrofits are frequently combined with structural remediation and seismic strengthening.
- In Drenthe (building company Drenthe), projects focus predominantly on insulating large roof expanses and retrofitting low-temperature underfloor heating in 1970s bungalows and family dwellings.
Checklist for your subsidy application
Before beginning construction:
- Ensure itemized invoices explicitly state the surface area (m²), exact insulation product name, declared Rd-value, and official RVO meldcode.
- Photograph the insulation products (with visible manufacturer labels) and the installation process during execution (RVO conducts random sample inspections).
- Submit the claim within 24 months of completion, checking which installation date governs your timeline when combining multiple measures.
Carrying out your sustainability retrofit
Looking to make your home sustainable step by step? Request a free consultation and quotation from Heidstra Bouw. We survey your property on site and draw up an engineered sustainability plan. Where helpful, a certified energy advisor can quantify your anticipated energy label improvement.
