Biography
Biography: Elias A. Silveira
Abstract
Renewable energy can be found in multiple inexhaustible ways, for example: the sun, the wind, the water, among other ways. These different sources of energy are cheaper and cleaner than the convencional one, and has been used even by ancient civilizations. Using them it’s possible to promote cost saving, such as the wind energy to pump water and grind grain. At the moment, the search for green energy is increasing due to the sharp population growth, which it requires an increase in energy availability. Besides that, most of nowadays conventional ways of energy they are not renewable, and affect the environment in many different ways. There are several ways of obtain the renewable energy. However, a few of them are not viable economically, and in some cases they are not efficient enough in order to provide the necessary quantity of energy required by some complexes. Some examples are: commercial buildings, or even those residential buildings; malls; data centers and other major facilities. To overcome these limitations there are some researches on how to obtain the best technology combination to reach the high demand of the current world. The use of green energy in the developed countries has a participation in energy matrix of 13% in average, and 6% in countries in development, but in Brazil the energy matrix is composed of 75% renewable sources with the major part using water resources. In this way the country has one of the biggest and most important projects of green energy in the world, for example by the use of ethanol in fuel production.Besides ethanol, the country has been increasing impressively in the wind energy use. Nowadays Brazil produces 6 GW through wind farms which correspond to 4.5% of participation in the brazilian energy matrix and there is an expectation to reach 8% in 2018, and could reach 22.4 GW in 2023. The use of photovoltaic transformation in Brazil is still incipient due to the high price of photovoltaic cells panels. However, some small buildings are currently using widely the solar collectors panels for water heating. For eletricity production in Brazil, water resources are mainly used, which consist of approximately 65% of the brazilian energy matrix. However, as hydroelectric power stations require the construction of dams and depends on the water level. Soon there will not be enough available water in stream beds to generate sufficient eletricity to reach the country’s demand. Given this scenario, there is a policy energy in Brazil to estimulate the diversification of the energy matrix, based on regional characteristics. For example, the south and northeast of Brazil look for taking advantage of wind energy, while the Amazon region seeks to build bigger hydroeletric power stations. When it comes to producing green energy, it is necessary to emphasize that it is possible to produce significantly quantity of energy without emitting several tons of CO2, which is a significant help to preserve the enviroment. In the present work, a scenario of the “green energy†use in Brazil will be presented, as well as statistics, showing how are the prospects for the future.