Non-IMpact BUS: Circular economy for sustainable transport

Nimbus is a European project co-funded by the LIFE Programme that aims to promote circular economy by generating biomethane from sewage sludge and power-to-gas technologies, and using it as a sustainable fuel for public transport.

Towards circular economy in public transport

The transport sector demands around 30% of total primary energy consumption in Europe, but only less than 10% of the fuels used for transport are renewable. In this context, the European Union aims to achieve over 30% of energy consumption for transport from renewable sources by 2030.

In view of this situation, NIMBUS aims to foster circular economy for a more sustainable transport. This project will develop and validate a system to produce biomethane, a sustainable and renewable fuel, from sewage sludge. Besides, the project will foster the concept of power-to-gas by turning the renewable energy surplus, which is difficult to store, into gas, which will also be used in the production of biomethane.

Recent news

Nimbus in numbers

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Turning WWTP into ecofactories

NIMBUS will apply the circular economy to water treatment, transforming the traditional wastewater treatment plants into ecofactories; facilities that generate valuable resources from waste. In this project, the ecofactory will valorize sewage sludge turning it into biomethane, a sustainable fuel suitable for public transport.

Main outputs and achievements

Reduction of one public bus’ carbon footprint by over 85% 

by using biomethane as fuel

Increase of almost 70%

of the energy obtained from biogas due to the storage of renewables through biological methanation