HOW IT WORKS ? CENTRAL BOILER HOUSE PIPING NETWORK SATELLITE STATIONS BUILDINGS CONNECTED MULTI-ENERGY SAFE, CLEAN      COST-EFFECTIVE HEATING	• The system central boiler house can use different sources of energy. • This diversification makes management flexible, decreases the risks of a rupture in supply and guarantees a stable price. • A cogeneration system (simultaneous generation of heat and electric power) can be coupled to the district heating system. Traditional energies : Natural gas Heating oil Coal Substitution energies : Recovery of heat from domestic waste incineration Thermal releases produced by industry Geothermal energy Biogas (gas produced by waste fermentation) Biomass (wood waste, pallets, sawdust, etc.) Mine gas The cold generation plants operate mainly on electricity, sometimes on gas