Types of green
Solar energy is made by cells that convert sunlight to electricity without any moving parts. The conversion of sunlight into electricity is made possible with the special properties of semi-conducting materials. In addition, solar energy systems do not produce air pollutants or carbon-dioxide.
If the typical household consumption of 10 Mwh a year was generated entirely by solar energy, it would eliminate the burning of 10,700 lbs. of coal.
Solar panels can increase the value of your home since they reduce your electric bill. With a grid solar power system, any extra power produced is fed back into the grid, making power meters actually run backwards.
Relying on the water cycle, a hydroelectric power station utilizes water flow to power a turbine. The turbines are connected to generators that produce energy through the use of water currents. The amount of energy generated is determined by the speed the water flows. Therefore, a swiftly flowing river will generate more electricity than a slower moving current.
Today, hydro generation accounts for more than 60 percent of renewable energy generation in the United States.
The waste we generate ends up in landfills where it decomposes and produces landfill gas made of approximately 50 percent methane. This gas can be captured and used to fuel electric generators. Since large landfills must burn off this gas anyway in order to reduce the hazards arising from gas buildup, this method of renewable energy is one of the most successful.
There are nearly 600 landfill gas projects operating throughout the United States.
Biomass is produced when organic wastes, such as trees, wood waste and agricultural residues decay. For example, landfills offer a primary source of biomass. This can be converted to fuel through combustion for the generation of electricity.
Wind energy is produced by a wind turbine with its rotating blades that harness the wind’s kinetic energy. Wind turbines contain generators that harness the mechanical energy from the spinning blades to generate electricity. Currently, the U.S. generates enough electricity through wind to power 12 million homes.
The average wind turbine stands 20 stories tall, with 3 blades that span 200 feet across!
[Source for above facts: EIA]
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