KELP

Commercial and public · Healthcare · 700 beds

Hospital buildings · Heat recovery from a water-to-water chiller

  • 390 t CO₂/yr
  • 1.5 months
  • 66,181,500 kWh cumac
Talk about your project
Heat recovery exchanger and pumps connected in the basement

The finding

The heat from the four was entirely lost.

What KELP did

First of the site's two operations on a water-to-water chiller: KELP redirected the heat to the networks, using hot taps so that hot water production was never interrupted.

The result

390 t CO₂/yr

CO₂ avoided across the whole site

Equal to the annual carbon footprint of about 48 French people, or 2.8 million km driven every year in a petrol or diesel car

The site has 2 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

Hospital buildings · 700 beds

Similar projects

See all projects

A comparable project on your site

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