Increasing and promoting the generation of renewable energy

Exploiting biogas energy

SUEZ ENVIRONNEMENT is accelerating the development of energy-from-waste processes. The energy generated by the Group’s facilities, particularly in fermentation gas (biogas), is essential in the fight against climate change.

SITA Waste Services a Group subsidiary , collects biogas from its landfill site in Hong Kong (China) to reduce its greenhouse gas emissions. This new fuel is now replacing naphtha, a fossil fuel used to produce coal gas.

For its part, SITA France strives to make the most of biogas by using it in cogeneration systems. This technique is aimed at producing heat for local use and improving the energy yield of its plants by 35 to 55%.

Moving towards energy self-sufficiency

Thanks to its high-potential organic resources that can be converted into energy, SUEZ ENVIRONNEMENT hopes to progressively achieve its objective of total energy self-sufficiency for its facilities.

Eurawasser, a Group subsidiary, is already on this route and is committed to achieving energy self-sufficiency for the Gosslar (Germany) wastewater treatment plant. Action was taken between 2006 and 2010 to reduce its energy consumption and increase renewable-energy production for its own needs. In 2010, a new codigestion unit was commissioned to increase the production of biogas as well as the amount of heat and electricity directly usable at the plant. All of the plant’s heat requirements are now covered by its own production, and 52% of its electricity consumption is self-produced.