Zero Waste Europe (ZWE) and Reloop have released today these guidelines for legislating Mixed Waste Sorting (MWS) in the context of the Renewable Energy Directive (RED).
The guidelines were developed to clarify the amendment proposed by the European Parliament regarding the use of mixed wastes for ārenewable energyā purposes (1).
The document recommends applying MWS systems of defined quality to remove fossil-derived materials to ensure that only biogenic waste is used for renewable energy generation. Following the requirement, the operators would either need to pre-sort the waste on-site or demonstrate that all waste received has undergone sorting prior to it being delivered for incineration.
Janek VƤhk, Climate, Energy and Air Pollution Programme coordinator at ZWE, stated: āCurrently, at incineration plants, the ābiodegradable fraction of mixed wasteā is never combusted without large quantities of (often recyclable) fossil-derived materials being present. Therefore, to ensure that the RED supports schemes that donāt allow the burning of fossil materials such as plastics, mixed waste sorting should be made mandatory for operators that want to sell their energy as renewableā.
Clarissa Morawski, CEO of Reloop, stated: āThe criteria proposed doesnāt create a new obligation as it’s already in the definition of renewable energy to use only the biogenic fractions of wastes and not fossilsā.
The guide also recommends setting the following minimum performance criteria for MSW
systems:
ā For plastics > 70%, with non-target materials contributing no more than 10%
ā For steel >80%, with non-target materials contributing no more than 4%
ā For aluminium >60%, with non-target materials contributing no more than 6%
A recent report by Eunomia Research and Consulting found that MWS would be necessary (in addition to improving separate collection and design for recycling) to ensure that existing plastic packaging and municipal waste recycling targets are met and to ensure progress towards the EUās wider carbon emissions reduction goals.
ZWE and Reloop call on the European Council and Parliament to improve the criteria for mixed wastes to ensure this would only qualify as a source of renewable energy if it has undergone sorting of defined quality.

