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Renewable energy technologies have many advantages that will enable many environmental benefits and with low production costs. At the same time, disadvantages such as lower power levels and limited application depend on geographical location and in some areas, environmental concerns.
Today, our planet greatly depends on many energy resources. The population of the world is rising, which means that people will need more energy for living, but much of the energy that people use is being depleted. Fossil fuels and energy produced through nuclear fission are nonrenewable sources of energy. To be more specific, coal, natural gas, oil and nuclear energy are some of the main energy sources used today. Even though our energy demands depend highly on these sources, use of these energy sources is associated with various environmental problems and a concern for the future with an inevitable shortage.
Research into alternative sustainable energy sources is ongoing. Sustainable energy implies the same energy that we consume daily, but which is produced by different methods and from different resources. Those sources are considered to be renewable and not limited considering a long term perspective.
Today, every person who is concerned about the future realizes the importance of sustainable energy. Such sources characterized as renewable include solar, wind, hydroelectric or geothermal energy sources. The development of these technologies deserves considerable attention, but due to some economical reasons and/or natural conditions, it is not wholly possible.
It also must be noted that not every geographical area can contribute to the installation of certain renewable energy production facilities. For instance, wind power energy has great potential and relatively low cost, but at the same time, it can't be used in some areas due to environmental reasons and difficulty related to converting wind power into electricity.
It will probably be a long time before many sustainable energy technologies come into serious play and begin to substitute even half of the current nonrenewable energy sources used now. Taking into consideration the fact that many third world countries cannot afford to develop many sustainable energy technologies to the fullest, it's likely that only the more affluent and developed countries will benefit from them. As for now, we can expect to observe a continuation of use between renewable and nonrenewable energy sources.
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