In this sense, Brazil has several alternatives for expanding the supply of electricity, free of CO emissions, in addition to hydroelectricity. Among them, generation from renewable sources stands out, co-generation with sugarcane bagasse and other forms of biomass, wind and solar - and from unconventional sources such as solid waste and effluents. In the case of cogeneration, an increase in the supply of electricity is estimated so that it represents a percentage of 11.4% of the total electricity supply in the country in 2030, which represents the generation of 136 TWh. The effort to reduce energy waste is also important. Based on the information presented in the first and second tariff review cycles by ANEEL - National Electric Energy Agency, non-technical energy losses are in the order of 22,000 GWh per year. It is intended to reduce this amount over the next 10 years at the rate of 1,000 GWh per year. This represents a reduction in energy waste of 400 GWh per year. On average, about 25% (100 GWh per year) of this energy will no longer be produced by thermoelectric plants. Thus, governmental efforts will be undertaken so that the socio-environmental variable, and therefore the one referring to climate change, is increasingly introduced in the process of planning the expansion of the electricity supply so that the participation is kept high. of renewable sources.