In relation to the electric matrix this percentage is even more significant, reaching 89.0%. The reference scenario in the National Energy Plan (PNE 2030) also stipulates that the expansion of electricity supply between 2005 and 2030 will include 95,000 MW from hydropower plants. Nevertheless, growing demand and the prospect of the long term exhaustion of hydroelectric potential, in addition to questions of socio-environmental nature, require other sources to be part of this expansion, notwithstanding the priority that hydropower deserves in the expansion of the electric system. Brazil has many alternatives for the expansion of electricity supply, free from CO emissions, in addition to hydro-electricity. Among them, renewables should be highlighted cogeneration with sugarcane bagasse and other forms of biomass, wind and solar and other non- conventional sources such as wastes. In the case of cogeneration, it is estimated that electricity supply from this source will reach 136 TWh (11.4%) of the total supply in the country, in 2030. The attempt to reduce energy wastage is also important. Non-technical losses of energy average 22,000 GWh per year. It is intended to reduce this amount in the next ten years, a rate of 1,000 GWh per year. This will represent a reduction in energy wastage of 400 GWh per year. On average approximately 25% (100 GWh per year) of this energy will no longer be produced by thermo power plants.