Portugal has officially reclassified digestate — the nutrient-rich by-product of anaerobic digestion, from “waste” to “by-product”, enabling it to be used as a fertiliser without the burdensome waste regulations.
This regulatory change unlocks environmental benefits (less synthetic fertiliser use, better soil health), economic opportunities (lower costs, stronger biogas sector) and improved circular-economy outcomes across the value chain.
The move sets a precedent for other EU countries, showing how policy clarity can boost biogas uptake and promote sustainable agriculture.
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