Bioenergy is electricity generated from renewable sources, in this case, the second generation ethanol.
In the production of second generation ethanol everything is reused from beginning to end of the production process. In BioFlex 1, lignin - one of the byproducts of second generation ethanol production - is burned along with sugarcane bagasse to generate electricity. An unprecedented solution for bioenergy in Brazil, as it is the first time that this residue is used for this purpose in the sugar and alcohol industry. This is an even more sustainable process than that of first generation ethanol, both because of the very low amount of CO2 released into the atmosphere and the amount of waste generated. It is a real innovation in relation to the energy sector in Brazil.
The cogeneration system, a partnership between GranBio and Usina Caeté, a first generation ethanol plant belonging to the Carlos Lyra group, has a steam generation capacity of 200 tons per hour. It will supply to the two industrial units and export the surplus to the network of 135 thousand MWh/ year, which is enough to supply to a city with 300,000 inhabitants.
The system operates for eleven months in the year, equivalent to eight thousand hours, during the harvest and off-season of the Caeté plant. The project reinforces an irreversible trend in Brazilian electricity market.