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  • Writer's pictureJosie L. Turpin

City of Paris case study

Updated: Jan 24, 2022

The City of Paris undertook 18 months of testing of Atmos-Clear EXO devices on a total of 33 engine types, in a study audited by Mazars Paris.

“EXO achieved an average of 72% reduction of harmful emissions, and delivered a 10% saving in fuel costs”

Elise Batkin – Suez Group France. Innovation project manager

“We were convinced about EXO when we launched this program, and now a year and a half later, delighted with the faith we showed in the product.

We are committed to sharing the successful results gained from the trial of Atmos-Clear EXO with the hope that public and private sector decision-makers will take ownership.

We would like to thank the City of Paris, Ademe Ile de France, and the Caisse des Dépots Ilede France, for their support throughout the programme, and for providing their feedback. A special thank you also to Airparif, technical partner, for opening the doors of this sector, providing technical and innovation support”


The Atmos-Clear EXO dramatically reduces damaging health and environmental engine emissions by up to 90% and creates a more efficient combustion cycle, thereby creating an increase in engine efficiency.

EXO delivers significant and immediate Capex and Opex savings in fuel reduction – on average between 5-10%, along with a boost in operational performance and a reduction in downtime. EXO technology can be fitted to virtually any vehicle or machinery fuelled by petrol, diesel or LPG and is 95% recyclable.

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