Eco-designed and eco-run homes Might the future of housing be timber? For many, the answer is a resounding “yes”. The response is even more positive when timber is combined with highly efficient electric heating solutions. In Cormeilles-en-Parisis, Greater Paris region, EDF is supporting the social landlord Novigère in a project for the eco-design of 60 housing units built using cross laminated timber (CLT) and equipped with the latest-generation electric radiators and an individual thermodynamic hot water heater. The economic performance is guaranteed.
4 times less carbon emitted(1) (CLT + electric heating compared with concrete + natural gas)
A solution with fine prospects The carbon footprint of construction timber is distinctly smaller than that of concrete. It is even negative when taking account of timber’s long-term ability to store carbon. But the savings are financial as well. In this project, the overall electricity bill, including shared services, is reduced by almost 20%(2) compared with a standard gas solution. Given the solution’s advantages and ease of implementation, the Cormeilles-en-Parisis operation is far from just a showcase – it can be easily replicated
2,400 kWh/year: average electricity consumption for a 68 m2 apartment
3kg CO2/m2/year: carbon emitted for an all-electric installation (label A) compared with 8kg CO2/m2/year for natural gas (label B) for a 68 m2 apartment
(1) CO2 during operation phase (AT3E study for Eiffage): emissions from dwellings using electric heating = 3 kg/m2/year compared with 8 kg/m2/year for gas heating. CO2 during construction phase (Carbone 4 study for EDF): 28 log(tonne) for concrete compared with 3 log(tonne) for timber, storage capacity included. Over 35-year period, 60 dwellings and 5,636 m2 of UFA (multiplied by a usage coefficient defined in the French thermal regulations): 3,200 tCO2 for concrete + gas heating compared with 800 tCO2 for the timber + electric heating solution.
(2) AT3E study for Eiffage: €860 including taxes/year for the electric heating solution compared with €1,060 including taxes/year for the gas heating solution.