The installed capacity of electric power generation in Rio Grande do Sul has grown considerably in recent years, from 1,893.8MW in 1998 to 9,565.8MW in 2016, according to ANEEL (BIG 2016). Such increase allowed the expansion of consumption levels, not only in the State, but also in the Country, since the generating plant operates through SIN – Sistema Interligado Nacional de Geração e Transmissão (National Interconnected System of Generation and Transmission)*. According to ANEEL, the State's installed capacity represents approximately 6% of Brazil's total installed capacity.
Regarding the state electric power generation matrix, 57.3% of it correspond to hydroelectricity (HPP – Hydropower Plants, SHPP – Small Hydropower Plants and HGC – Hydropower Generating Centrals); 24.0% correspond to thermoelectricity (TPP – Thermoelectric Power Plants fueled by fossil fuel or biomass**); 18.5% to wind energy (Wind Turbines), and 0.0005% to solar energy (PPP – Photovoltaic Power Plants), what demonstrates the progress of diversification with the use of alternative energy sources. Such diversification began with the expansion of the use of natural gas and biomass as sources of energy and is based, in recent years, on the expansion of wind energy and the installation of new projects for the use of solar energy; which has ensured improvements in the relationship between production, import and consumption in the State, with the addition of the so-called Free Consumers and Independent Producers.
The Basic Electric Power transmission network makes it possible to transport and supply energy generated to the concessionaires, licensees and authorized distribution companies operating in RS, which are led by CEEE Distribuidora, RGE Sul and RGE. The electric power transmission system of the State, which integrates SIN – Sistema Interligado Nacional (Brazilian Interconnected Power System), has more than 100 transmission substations and is also connected to the Argentine system through converter stations Garabi and Uruguaiana, and to the Uruguayan system through converter stations Rivera-Santana do Livramento, and Candiota III-Melo. The operation of the basic network of electric power transmission in Rio Grande do Sul, with voltages of up to 500kV and extension of more than 6,000km***, is mostly carried out by CEEE – Companhia Estadual de Energia Elétrica (Electric Power State Company).
* According to ANEEL (BIG 2016).
**According to ONS – Operador Nacional do Sistema Elétrico (National Electric System Operator), the National Interconnected System is formed by companies from the South, Southeast, Midwest, Northeast and part of the North. Only 1.7% of the energy required by the country is outside SIN, in small isolated systems located mainly in the Amazon region.
***According to ANEEL, there are currently in RS thermal plants driven by coal, natural gas, diesel, fuel oil or other oil products and also thermal plants driven by biomass derived from rice husk, black liquor (paper industry bleach), wood waste, AGR biogas (originated from the agro-industry) and UW biogas (originated from urban waste).
****ANEEL/SIGEL – Sistema de Informações Georreferenciadas do Setor Elétrico (Geo-referenced Information System of the Electric Sector) – 500 and 230kV ); CEEE (6,055.61Km – data from Jan/2013).
Source: MME/EPE. Balanço Energético Nacional - BEN (2006 a 2017)
Source: ANEEL - BIG 2017/Resumo Estadual