What is Renewable Energy? It is one of the most important questions of our time. With global warming and climate change posing significant threats to our environment, it is imperative that we look for ways to preserve natural resources. Renewable energy involves using energy from natural resources that cannot be replaced, such as the sun, wind, waves, tides, and geothermal heat, which cannot be depleted.
The use of fossil fuels is essential for the transportation industry, but harmful to the environment. Hydroelectric power plants use dams to store and harness the power of the water flow coming into a river or lake. Damming up a river is costly and harmful, while having a dam means that hydroelectric power plants will not be needed, as there will be no need to store and harness the power of the water. However, some dams are necessary to control flooding.
Wind energy uses windmills to generate electricity. Although windmills can be used to generate other types of energy, the windmill industry is largely dependent upon the availability and price of oil. To address this dependency, there have been several large-scale investments made in windmill technology. One of these, the Hoover Dam in the United States, is an example of how hydroelectric power and wind power can be used to offset the effects of climate change.
There are many examples of renewable energy being put to use in the United States. Hydroelectric power plants use water that has been pumped into underground wells to turn turbines which generate electricity. Geothermal energy utilizes the earth’s natural heat to warm buildings and homes. These methods do not emit carbon into the atmosphere.
When it comes to green energy sources, the focus tends to be on hydropower and wind. One of the largest investments in green energy, however, is the hydroelectric project at the Hoover Dam. The dam has allowed enormous amounts of water to be directed to the surrounding area, allowing water to run freely throughout the valley.
The use of water for hydroelectricity is nothing new. The Persians are believed to be the first to use the method, thousands of years ago. More recently, modern hydroelectric power plants in the world have been powered by hydroelectricity. These plants use hydraulic pistons to move water through turbines. As the water flows through turbines, it turns the blades which create energy. This energy produced by hydroelectric power can be used to heat homes, to produce electricity, and to desalinate water.
Another Renewable Energy Source
Geothermal power is another type of renewable energy source that has recently come into focus. This method is believed to have been around much longer than either solar or wind energy. It involves using heat from beneath the earth’s surface to generate electricity. A geothermal power plant uses a heat pump to absorb this heat and then pumps it into underground pipes.
While these types of technologies all involve the conversion of some form of fossil fuel to provide energy, there is one type that has recently come into focus: solar energy. As of now, the leading technology in this field is the solar thermal power system. This is achieved by installing solar collectors that use mirrors to reflect and heat sun rays. This is then converted into electric current.
There are currently technologies in place that allow electricity to be produced even when the sun is not shining. The potential for this type of technology to meet the energy needs of the world is huge.