What is the difference between DPP and EPD?
The DPP is a digital access point for product-related data, while the EPD is a standardised environmental declaration. A DPP can bundle many data sources; an EPD is a verified source for environmental impacts.
The terms are often confused because both deal with sustainability data. The DPP is broader: it covers identification, conformity evidence, access rights, repair information and potentially EPD or LCA data.
What is an EPD for?
An Environmental Product Declaration describes a product's environmental impacts based on a lifecycle assessment. It follows standards such as ISO 14025 and, for construction products, EN 15804.
EPDs are especially relevant for construction products, procurement, building certification and B2B comparisons. They are typically independently verified and provide structured environmental indicators, but they do not replace a complete product passport.
- EPD: verified environmental metrics and methodological comparability.
- DPP: digital access, compliance data, roles, updates and product lifecycle.
- Together: EPD data can be referenced as verified evidence inside the DPP.
When does a company need both?
Companies need both when regulatory product data and verified environmental metrics are relevant at the same time. This is especially common in construction products, furniture, steel, aluminium, chemicals, electronics and other material-intensive value chains.
In this architecture, the EPD remains the verified environmental source. The DPP references it, adds technical and regulatory data and ensures that the right users receive the right information.
How should DPP and EPD be connected technically?
Technically, EPD data should not be copied and detached. A referenced data model is safer: the DPP contains the relevant environmental metrics, links back to the EPD source and stores version, validity and verification status.
This keeps auditability and freshness intact. When an EPD is renewed, the DPP can show the new version without losing historic evidence or invalidating QR codes already attached to products.
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