# Data Evolution

We often get questions about the addition and evolution of data available in EC3. This page is intended to provide insights into the way EPD data gets added to the EC3 database, and on the evolution of data in the database over time.

## Valid EPDs over time

<figure><img src="/files/zVNPNf9LNWy08ZOFxN0Q" alt=""><figcaption><p>Valid EPDs in EC3 from launch of EC3 to 10/8/2025.</p></figcaption></figure>

This chart shows snapshots of the state of the EPD database at various time since the launch of EC3 in 2019.&#x20;

This chart only shows the EPDs valid at the time of each snapshot, excluding expired EPDs at those points in time. This chart also does not necessarily represent the development of EPDs themselves, but the evolution of the data becoming available in EC3 (EPD creation and EC3 availability can be correlated in certain categories, like Concrete, but not always across all categories).


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