Why register your product in the Dutch Environmental Database?
A category 1 or 2 environmental declaration in the Dutch Environmental Database makes your product visible in environmental performance calculations for buildings and civil engineering (GWW) works. Calculation tools draw their data from the NMD, so only registered products are included in a calculation. This means your product can be part of design and procurement decisions in construction.
The benefits of registration
- Your product can be included in, among others, EPB and ECI calculations
- The environmental impact of your product is substantiated with validated data
- Your product becomes comparable to alternatives
- The LCA process behind the environmental declaration gives you insight into your product chain and improvement potential
- You prepare for stricter sustainability requirements
What is a category 1 or 2 environmental declaration?
The Dutch Environmental Database contains three categories of environmental data:
- Category 1 is product-specific data from a manufacturer, based on a verified LCA and independently verified
- Category 2 is data for a product group, representative of multiple producers and also verified
- Category 3 is brand-neutral generic data from Stichting NMD. This data is used when no specific or representative data is available. A 30% mark-up factor is applied to category 3 data
A category 1 or 2 environmental declaration is more accurate than generic data, because the outcome is based on the properties of your specific product.
What do you need?
To have an environmental declaration registered, you follow a fixed procedure:
- Step 1 is having a life cycle assessment (LCA) prepared by a recognised LCA consultant. This maps the environmental impact of your product: from raw material extraction and production to transport, use and end-of-life processing.
- Step 2 is submitting the data to Stichting NMD via the NMD Portal.
- Step 3 is independent verification by an LCA expert recognised by the NMD.
- After publication, your environmental declaration is available in the NMD and accessible to calculation tools.
Four reasons to start now
- Visibility in environmental performance calculations
Calculation tools for EPB and ECI calculations use data from the NMD. If your product is included, it can be taken into account in design and procurement decisions made by construction professionals and clients. - Insight into your product chain
An LCA provides insight into the environmental impact of your product per life cycle phase. This information helps improve and make production and business processes more sustainable. - Preparing for stricter requirements
Requirements for the environmental performance of buildings are becoming stricter. Products with only category 3 data become less usable as these requirements tighten. An LCA process can take time, depending on the availability of source data. Starting early gives you room to prepare. - Possible support through the compensation scheme
For product groups where insufficient or no data is yet available in the NMD, the Filling the Gaps Compensation Scheme offers financial support for preparing an environmental declaration. A scheme is also available for biobased products, offering a contribution towards the cost of having an LCA prepared.
Witte vlekken: waar nog te weinig data beschikbaar is
Voor sommige productgroepen is nog geen of onvoldoende milieudata beschikbaar in de NMD. Die hiaten worden ook wel witte vlekken genoemd. De vergoedingsregeling Witte Vlekken ondersteunt producenten bij het ontwikkelen van nieuwe milieuverklaringen voor die productgroepen. Daarmee draagt u bij aan volledigere datadekking in de NMD, terwijl u tegelijk uw eigen product zichtbaar maakt.
Gebruik in rekeninstrumenten
De milieudata uit de Nationale Milieudatabase wordt gebruikt in rekeninstrumenten voor milieuprestatieberekeningen van gebouwen (MPG) en GWW-werken (MKI). Hoe specifieker de data, hoe nauwkeuriger de uitkomst van de berekening. Als van uw product alleen generieke categorie 3-data beschikbaar is, telt die data mee met een 30%-opslag. Categorie 1- of 2-data geeft een reëler beeld.
Aan de slag
Wilt u uw product laten opnemen in de Nationale Milieudatabase?
Meer over het opstellen van een LCA
Vergoedingsregeling Witte Vlekken
Vind een erkende LCA-opsteller of toetser
Graag eerst nog wat meer informatie en een informatief gesprek? Meld dan eerst uw interesse
Veelgestelde vragen Milieuprestatie
De milieuprestatie geeft de milieubelasting van materialen aan die in een bouwwerk worden toegepast in de vorm van een 1-puntsscore. Door het instellen van een 1-puntsscore worden de milieuprestaties van verschillende bouwwerken beter vergelijkbaar met elkaar. Hoe lager deze score is, hoe lager de milieu-impact is. De milieuprestatie wordt o.a. gebruikt als eis in de bouwregelgeving, voor duurzaam inkopen en certificering zoals BREEAM-NL en GPR Gebouw.
De MPG wordt gebruikt om de milieuprestatie van bouwwerken te berekenen. De milieuprestatie is een belangrijke maatstaf voor de duurzaamheid van een bouwwerk.
Het berekenen van de milieuprestatie is in de B&U-sector verplicht op grond van het Besluit bouwwerken leefomgeving (Bbl). Per 1 juli 2026 geldt deze verplichting voor nieuwe woningen, kantoren groter dan 100 m² en voor het eerst ook voor utiliteitsgebouwen zoals scholen, winkels en zorginstellingen. In de GWW-sector wordt de milieuprestatieberekening toegepast als gunningscriterium bij aanbestedingen.
Altijd actueel:
nieuws over duurzaam bouwen en milieuprestatie & milieudata
Ontvang elke maand het laatste nieuws duurzaam bouwen, milieuprestatie,
milieudata, inclusief tips en voorbeelden uit de praktijk.
Frequently asked questions environmental data
If an LCA of your product has not yet been drawn up in accordance with the Assessment method, the first step is to have this analysis carried out by a (recognised) LCA practitioner of your choice.
Find a recognised LCA practitioner in our overview
Or check the list of companies that draw up LCA practitioners. These companies are mostly affiliated with the VLCA.
Have you found an LCA practitioner? Then see the next steps here
Before the LCA practitioner can enter the environmental data, you must be registered as data owner with Stichting NMD. You then indicate that you agree to the NMD Terms of Use and the General Terms and Conditions. There are costs associated with registering data in the NMD. In order for invoicing to proceed in good order, we need billing details from you. It is also important that you indicate in the form which LCA practitioner will provide the data entry, so that login details for the entry module can be provided.
An LCA is a quantitative method to determine the total environmental impact across the product life cycle; from raw material extraction and production to end-of-life use and disposal. It allows companies to understand the environmental impact of their products and raw materials through the entire value chain. Read more information on environmental data here. Environmental declarations in the NMD must be prepared according to the The Environmental Performance Assessment Method for Construction Works (Assessment Method). Chapter 2 of the Assessment method provides the methodical requirements for determining the environmental performance of (building) products, installations and processes.
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