Renewable energy sources replenish themselves without the need for human intervention. Several methods of harnessing natural and sustainable forms of energy have been used to create usable renewable energy sources since the advent of alternative energy sources. Renewable energy sources such as solar, wind, hydroelectric, geothermal, and biofuels all produce clean, low-pollution energy.
Wind power is one of the most rapidly expanding forms of alternative energy today. Wind has been used for its awesome power since humans first took to the sea in primitive sailboats. Windmills have been used to aid milling and grinding for centuries. Modern humans, on the other hand, harness renewable wind power by connecting modern windmills or turbines to power-collection systems. Denmark has become a leading manufacturer and supporter of wind power, with some estimates claiming that wind farms provide 20% of the country’s energy.
During the day, humans only need to look up to see one of the largest sources of renewable energy: the sun. Solar power, particularly in the form of solar paneling, has exploded in popularity. Solar panels installed on the roofs of homes and even large buildings can now power their own activities. Solar energy has become a staple of green construction, but the technology for harnessing the sun still needs to be refined. Renewable energy scientists are constantly researching more efficient ways to use solar power, including the possibility of space-based power stations.
Biofuels, such as ethanol and biodiesel, are currently the subject of extensive research. It’s difficult to imagine a green clumpy mass cluttering up a backyard pond being able to power a car when looking at it. However, as one of the newer renewable energy sources, algae biodiesel is attracting a lot of attention. Algae, which can be easily grown and produced in lakes or laboratories, could be one of the solutions to depleted fossil fuel stocks.
Geothermal energy is unquestionably one of the most exciting renewable energy sources. This type of alternative energy harnesses the earth’s trapped heat to generate large amounts of usable energy. Geothermal plants are now found in dozens of countries around the world, usually near geysers or tectonic plate boundaries. Geothermal power plants account for more than 15% of total energy production in at least five countries.
Renewable energy sources are a significant step forward from fossil fuels and crude oil dependence, but they are far from a complete solution to an impending energy crisis. Significant amounts of pollution-heavy practices are still required to build alternative energy plants and transport the energy. Nonetheless, each type of sustainable energy contributes to the puzzle of reducing reliance on oil and other depleted resources. Humans can gradually move away from destructive past practices and toward a green future by relying on clean and sustainable energy sources.