For its first self-consumption project, WIND my ROOF is partnering with Rouen Habitat to experiment self-generation of renewable energy on one of the city’s housing roofs.
Initiated by the President of the Rouen metropolitan area, Nicolas Mayer-Rossignol, this collective self-consumption project is the result of a year’s work between WIND my ROOF and Rouen Habitat, the Public Housing Office of the city of Rouen. It is part of the landlord’s strategic energy plan to limit its environmental impact.
The Capricorne building was chosen for this pilot project: it houses 84 apartments on 10 floors. The building combines all the necessary criteria for an installation: wind exposure, height and moderate urban density.
The installation, completed on May 24, 2022, consists of eight WindBoxes on the west side of the building. The WindBoxes will supply electricity to the common areas of the building, in self-consumption with resale of the surplus.
The production should reach an average of 14 MWh per year for 20 years. This is enough to compensate for the energy consumed by 4 elevators¹, 107 television sets², or 462 electric scooters³ per year.
A self-consumption project with a positive social and environmental impact
The investment made by the social landlord will allow a growing reduction in charges for the building’s inhabitants. In a context of soaring energy prices and inflation, this self-consumption project contributes positively to the purchasing power of households.
And on the environmental level? Over 20 years, the installation of WindBox on the Capricorne building will save approximately 10.5 tons of CO2 equivalent (i.e. equivalent to the emissions of more than 2,920 laps of the Paris ring road by car⁴). For one kWh of electricity produced, the WindBox emits 34 g of CO2 over its lifetime, compared to 49 g for solar panels outside the EU⁵.
An experiment that could lead to new projects
This self-consumption project will be monitored at regular intervals by Rouen Habitat and WIND my ROOF, in order to verify the production hypotheses and to ensure the comfort of the inhabitants. If the experimentation proves to be conclusive, it could lead to new installations on the buildings of the rental park which are suitable. Rouen Habitat houses nearly 15% of the population of Rouen and its rental stock in 2020 was established at 8,085 units.
About
WIND my ROOF develops the WindBox, a module for the production of renewable, local and clean energy for roofs, combining small wind and solar power. Light, powerful and discreet, it increases the energy autonomy of buildings and participates in the energy transition of the sector.
Rouen Habitat is the public housing office (O.P.H. in French) attached to the Metropole Rouen Normandie. It is the leading social landlord in the city of Rouen and has been serving the territory since 1930.
As a key player in social housing, the office houses nearly 15% of the population of Rouen and represents 50% of the social housing in the city of Rouen.
¹ : Based on an annual consumption of 3,400 kWh (Source : La consommation électrique d’un immeuble et par appareil (ascenseur, éclairage, chauffage, portes…) (baticopro.com))
² : On the basis of a 100 W LCD television set, used 3h30 per day, 7 days a week.
³ : On the basis of an electric scooter of the brand Xiaomi of 250 W of power with a range of 30km, used 7 days a week, at a rate of 10km/day.
⁴ : Based on a lap of the Paris ring road doing 35km ( Source : Evolution du taux moyen d’émissions de C0₂ en France)
⁵ : Documentation Base Carbone (ademe.fr)
