Finding alternatives to fossil fuels and utilizing by-products
Making use of by-products and industrial waste is an important, sustainable and cost-effective way to replace a proportion of fossil-based raw materials.
Tereos uses various processes to ensure that 50% of the power used by its facilities comes from renewable sources.
Our innovations enable us to:
- Find green alternatives to the fossil fuels used by our industrial units
- Increase energy recovery from our by-products
- Improve our energy efficiency and reduce our carbon footprint
A world first in the methanization of sugar beet distillation residues at Artenay
In 2014, new methanization units came on-stream at the Artenay site in France and the Dobrovice site in the Czech Republic. This innovative process uses vinasse, a by-product of distillation, and is the first of its kind in the world. The biogas it produces is then used in the plant’s boilers, thereby reducing fossil fuel consumption and CO2 emissions.
Producing electricity from bagasse: cogeneration
Bagasse, the fibrous residue that is left after the sugarcane crushing process, is burned in boilers to supply our sites with steam and power: this is known as cogeneration. Any electricity that is surplus to the needs of the plant is then fed into the conventional grid.
In Brazil, regular investment in cogeneration units has enabled Guarani to increase its electricity sales year-on-year.
During the sugar cane season on Réunion, Tereos supplies bagasse to the island's two thermal power plants from its neighboring sugar factories. Without the bagasse, the island would have to import 145,000 tons of coal. Bagasse currently provides one third of the island's renewable energy, i.e. 12% of Réunion’s electricity consumption.
In Mozambique, the boilers at the Marromeu sugar factory are also powered using this energy source. During the sugar beet season, this not only meets the facility's own requirements, but also supplies electricity to the plantation's irrigation systems and the neighboring villages.