KELP

Industry · Glass · 30,000 m³

Glass-ceramic manufacturer · Heat recovery from a dry cooler

  • 11,600 t CO₂/yr
  • 1 year, furnace by furnace
  • 561,279,002 kWh cumac
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Crane lift of an adiabatic dry cooler onto the factory roof

The finding

(TAR) at the end of their life, the heat of three production furnaces entirely lost, and a building with 13 m of ceiling height impossible to heat evenly.

What KELP did

Second of the two operations on a : heat from the furnaces, once lost, now preheats the air of the .

The result

Production never stopped.

11,600 t CO₂/yr

CO₂ avoided across the whole site

Equal to the annual carbon footprint of about 1,400 French people, or 82 million km driven every year in a petrol or diesel car

The site has 9 operations: the CO₂ avoided, the CEE volume and the project duration are for the whole site.

Energy savings certificates (CEE)

Works funded by energy savings certificates (CEE)

How we calculate the CO₂ avoided : The CO₂ avoided is estimated from each project's volume of energy savings certificates (CEE), expressed in kWh cumac, that is, cumulated over the conventional lifetime of the works and discounted at 4% per year. This volume is converted into the energy saved in one year, then multiplied by the emission factor of the energy replaced: 0.065 kg CO₂/kWh for electricity used for domestic hot water, 0.227 kg CO₂/kWh for natural gas (regulatory values from the French order of 31 March 2021). Comparisons: average carbon footprint of a French person, 8.2 t CO₂e per year (SDES, 2024); petrol or diesel car, 142 g CO₂e per km, manufacturing included (ADEME, Impact CO2, 2025).

The solutions implemented

On the same site

Glass-ceramic manufacturer · 30,000 m³

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The audit establishes the savings achievable on your site and the financing available for your project.