Fighting against climate change
SUEZ actively contributes to the fight against climate change thanks to the development of solutions allowing greenhouse gas emissions to be reduced, energy consumption to be optimised and the use of high potential renewable energy to be fostered.
The Group devotes a considerable amount of work in developments enabling energy savings to be made in the operation of its infrastructure and facilities, energy recovery in incineration plants to be enhanced, and renewable energy to be used.
In the areas of water and waste, many programmes are now devoted to the reduction of greenhouse gas emissions, energy optimisation and the development of renewable energy potential. As an example, biogas is naturally produced by the anaerobic digestion of sludge from wastewater treatment stations and by the biodegradable fraction of municipal solid waste, especially in landfills. Its recovery and then its use, participate in reducing the environmental footprint of SUEZ’s activities and those of its clients. Its processing enables energy to be produced. The Group’s R&D is, in particular, working on biogas recovery and purification processes as well as on its use in co-generation (heat and electricity).
Solar Active System (SAS), Solar Active System, developed with the company Clipsol, subsidiary of ENGIE, contributes to the use of green energy in treatment processes. Implemented in 2012 on the Aquaviva wastewater treatment plant Aquaviva in Cannes, France, the SAS solar panels enable the electricity production yield to be improved by 65%. This technology is perfectly in keeping with the Group’s objective of offering solutions at the forefront of energy efficiency.
It is now possible to recovery heat from wastewater networks to heat or air condition a building. Developed by the Lyonnaise des Eaux, Degrés Bleus is an innovative and ecological solution which enables local authorities to recover energy contained in their wastewater. In winter, wastewater is considerably warmer than the outside air. Heat coming from wastewater can be recovered. In the summer, the reverse process occurs and buildings can be cooled. Since 2010, 90% of the swimming pools at the aquatic leisure centre in Levallois, France, are heated up using this type of heating technology enabling CO2 emissions to be reduced by up to 70%.
The 100% electric refuse collection vehicle, incorporates innovative technologies (high -energy capacity lithium-ion batteries and recovery of kinetic energy when the vehicles brakes) which give it the same level of efficiency as that of a traditional refuse collection vehicle. This new generation collection vehicle assures less pollution, more silent and safer collection operations, which are a genuine benefit for the sustainable town. Courbevoie, France, was the first town to be equipped with this type of vehicle in 2011 for the greater peace of its local residents.