Gallery ACCENTA 1
Gallery ACCENTA 1
October 2020
Headquarters 92100 Boulogne-Billancourt, France

ACCENTA - Geothermal and ai-based heating and cooling system for commercial and collective residential buildings

ACCENTA heating and cooling system relies on a predictive and self-learning intelligent control system, which optimizes in real time the efficiency of thermal energy production for the building according to demand.

With 20% of the French CO2 emissions, the tertiary and collective real estate sectors are major contributors. Improving their carbon footprint is, therefore, a significant challenge, with a targeted effort on heating, which accounts for 78% of the emissions. This is a global issue as most developed countries display similar patterns. ACCENTA invented a low-carbon heating and cooling system that reduces up to 80% of the CO2 emissions compared to standard solutions. It relies on inter-seasonal geothermal storage and waste heat, from air-conditioners or low-carbon solar heat, produced during summer and stored into the ground. In winter, heat pump's yields are optimized by up to 50% using the stored heat, drastically cutting both energy consumption and CO2 emissions.

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Key features

  • 50% better yields for Ground Source Heat Pumps
  • Bore fields up to 200m depth
  • Up to 60% of energy consumption reduction for heating and cooling buildings
  • Up to 80% of CO2 emissions for heating and cooling buildings


  • 60% less OPEX than mainstream solution
  • 8 years payback time

Company Profile

Maturity Stage

  • Medium and large scale commercialization
  • Small scale commercialization
  • Initial market commercialization
  • Prototype testing in the real world
  • Prototype testing 1:1 in the lab

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