An unlimited supply of energy is called renewable energy. This energy produces little to no emissions and leads to the purification of air and water, making it a healthier alternative to non-renewable energies like coal, natural gas, uranium, and oil.
Renewable energy is capable of creating jobs and generating profits for local towns and cities.Revenue received from renewable energy are generally invested towards the additions, enhancements, or renovations of roads, schools, and hospitals.
Two main types of renewable energy are solar energy and wind energy.
Solar energy comes from heat and sunlight, and its purposes range from generating electricity to heating water. Many homeowners have 5kw solar systems that are meant to save them significant costs on electric bills.
There are two ways to obtain solar energy. Concentrated solar energy requires the use of mirrors to reflect the sun’s rays, directing them on to receivers that convert the sunlight into heat. This energy is then used to produce electricity with the help of a steam or heat powered generator.
Photovoltaic solar energy uses photovoltaic (PV) cells, which are made of semiconductors. These PV cells convert sunlight directly into electricity, and can store ore electricity with more solar panels installed in its grid.
In the United States, there are solar grids that generate over 3100 megawatts of power, which is provided to more than 630,000 households. That same amount of power can run 7% of all households in Australia!
The solar energy business is rapidly growing, and more homeowners are looking into investing in this energy for personal or commercial use. When utility rates get higher, 5kw solar systems are more dependable. Solar energy does not create air or water pollution, and it safe to use to grow produce inside greenhouses.
Where as solar energy is most useful during the day, wind energy is most useful at night. Wind is described as air in motion from natural causes, such as the earth’s rotation and the irregular heating of the surface of the earth from the sun. The main purposes of wind energy range from grinding grain, pumping water, and moving nautical vessels like boats in lakes or seas. Windmills were a source of water and electricity in the 20th century.
Today’s windmills are called wind turbines, which are 200 foot structures that look like fans. The blades of these turbines move when winds blow them. The blades are connected to a shaft, which is connected to a generator, which gains power when the blades are moved.Wind turbines do not need to be cooled with water, nor do they release air pollutants in light of their operation. In the United States generate more than 9 million homes, which is more homes than all of Australia.
Other positives to renewable energy are listed below:
- Both energies have high rates of sustainability and do not deplete precious resources.
- Both energies can provide backup power.
- Both energies are cheap to operate.
- Both energies can be produced locally, which lessens the need of outsourced energy.
Investing in renewable energy today also comes at a price, which are also listed:
Both energies require high upfront costs to purchase and install.Both energies use materials themselves that are of rare earthly resources.Both energies use panels and turbines that are big, take up a lot of space, and are ugly to look at.Regardless, solar and wind energies are dependable energy sources that can change the landscape of our economy as well as our environment.