The operations of Iguá Rio, a sanitation utility serving 1,2 million people in the state of Rio de Janeiro, are now powered by 100% renewable energy from solar sources.
The company had already been consuming 90% renewable energy in its operations, sourced from photovoltaic and wind power plants certified through I-RECs. With the start-up of another dedicated solar plant, the third, the transition is fully complete.
Iguá Rio uses the remote self-consumption method, enabling the allocation of energy credits to any area within the same distribution company's network.
The electricity supply, in practice, is compensated by means of credits generated in two plants operated by Faro Energy, a manager of solar assets. Each one is responsible for compensation equivalent to 2,3 thousand MWh/year.
The technology applied to these farms, located in Cabo Frio (RJ), allows the use of credits generated in periods of high incidence and also in periods of low radiation.
As part of its national plan, the Iguá Saneamento Group initiated its energy transition in 2019, entering the Free Energy Market. In 2022, the company entered into a partnership with Elera Energias Renováveis. The contract is based on self-generated energy.
Currently, five Iguá units utilize this arrangement. Most of the electricity is produced at the Janaúba Solar Complex, where there is a plant dedicated exclusively to Iguá, with a capacity of 50 MWh/year.
It is estimated that the sanitation sector consumes about 3% of the total energy produced centrally in the country. According to Iguá Rio, the change in the company's energy matrix prevents approximately 1,3 tons of CO2 emissions per year, an action equivalent to planting 8.233 trees annually.
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