Solar power electricity is just one of several methods that are used to generate electrical energy. Scientists are convinced that solar energy could easily supply many, many times the total world energy requirements.
Most of us take the supply of electricity for granted. We are contented to merely plug our heaters, cookers, fridges, computers and televisions in to the electric sockets that are located conveniently in the walls of our homes.
Most people assume that their electric power comes through the electrical grid from a power plant which is situated somewhere not far from where we live and then pay the utility company for their monthly usage. And that is the end of it.
However there are different types of energy plants generating the electrical power that is contributing to the grid for our use. There are hydroelectric power plants that generate electricity by harnessing the power of water, nuclear energy plants that harness the energy of the atom, coal power plants which use our ever dwindling fossil fuels and wind farm power plants harnessing the power of the wind to create electricity.
These all have the drawback of being costly to construct, have high maintenance costs and their fuel costs are exorbitant.
Solar energy plants are cropping up all over the world as various methods are found for harnessing the power of the sun to generate electricity. Governments are pumping millions of dollars into photovoltaic plants to test devices and materials to make it possible for them to add storage for the electricity that they produce.
solar power electricity falls into the two general categories of terrestrial solar energy and space-based solar power.
Solar power panels utilize a photovoltaic cell to convert light in to an electric current. This is perhaps the method that we are most familiar with as it is these solar power panels that are used for generating electrical power in the home. This method has also been broadly used in power plants around the world. There are different types of photovoltaic cells that are being tested and produced including thin film, monocrystalline as well as polychrystalline silicon.
Concentrating solar power is a method of using the suns heat to generate steam that drives an electrical power turbine. Mirrors that track the sun are used to focus a large area of sunlight into a small beam that is then directed at a tower which heats a liquid in the traditional way. Again different methods and types of mirrors are being tested in this area.
Space-based solar power would use a satellite to gather energy, convert it into electrical power and then transmit it to earth. This really is still in the experimental stage but in the not too distant future we will be using electricity which has been beamed down to earth by wireless power transmission by using a microwave beam. There are many justifications for using a space based solar system rather than a terrestrial not least because they would be not dependent on weather conditions.
Governments are putting money heavily in solar power plants as an alternate method of generating electrical power. They are pumping huge sums of money into the development of finding improved ways for holding the electricity.
This might all seem to be happening on a rather grand scale where we see a solar power plant with many acres of mirrors and solar panels collecting and directing the suns heat to create power. But at the same time governments all over the world are offering a choice of grants, tax rebates and other incentives to homeowners who want to construct their own small scale solar power electricity systems. In many situations it can be quite possible to sell any extra electricity that you are able to generate back to the utility company.
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