Solar panels can be used to change the vast energy of the sun to some other kind of productive energy. In general the resultant power will be available in the form of heat (to heat a home for example) or electricity which can be used to power anything from a mp3 player to a whole business.
In this article we are going to discuss the larger residential and industrial panels that are designed to generate electricity for the home or business, where these panels are typically put on the top of the roof or in close proximity to the home if space allows. We are going to focus on the kind of panels that generate electricity – known collectively as “Photovoltaic” panels.
Solar panels are a great way to cut energy costs and to cut your carbon footprint, and to become more self-sufficient. They are now becoming extremely popular in inner-city areas where alternative energy advocates and law makers are creating incentives for this safe and quiet alternative energy source. The state of California, for example, has been offering massive rebates on up-front capital cost in acquiring and installing a residential solar system.
After the panels are installed, energy from the unit is used to power the home, or, when electricity is being made that exceeds what is being used, re-routed for use on the grid, where it is purchased back by the electrical power provider. There will be times when you are making income from your panels. With rebates factored into the initial pricing it will generally take from 16 to twenty-five years to get back the initial expense, at which point the system will essentially be generating electricity from the sun without cost.
This alternative energy snippet courtesy of trade leads from the Energy section of our Business to Business website.
One little-known fact, however, is that solar panels are initially contributory to greenhouse emissions due to the fact that it requires an input of power to manufacture a solar panel, that this power is most often carbon-based, and front-end loaded, and that therefore there is a time period during which the cell has actually added to carbon emissions rather than detracted from them. Until such time as the solar panel has produced electricity equivalent to the energy used to manufacture it (its fossil-emission payback period) it is actually a contributor to carbon emissions. This fossil-emission payback period is generally considered to be 5 to 8 years.
Low power panels are generally available in 12 v or 14 v configurations, whilst many high power panels are only available as 24 volt. As solar panels are Direct Current, you may generally need a power inverter that changes the voltage from one-voltage as Direct Current to high-voltage AC to make it the same as the energy that enters the building and the power grid.
Todays solar panels are made of twin sheets of silicon, doped with phosphorus and boron particles. New technologies such as Amorphous silicon solar panels are a powerful, emerging array of photovoltaics that differ in voltage, wattage, structure, and manufacture than traditional photovoltaics which use crystalline silicon. A new type, known as H-AS solar panels are produced in a similar way, but they are made just 1 micrometer thick by depositing polymorphous silicon at high pressures and temperatures.
Solar panels are generally maintenance free and almost all of the manufacturers will supply a guarantee of electrical output sometimes for as long as 25 years.
Solar panels are installed on the side of your house that gets the maximum solar exposure—in places that are south of the equator this is the north-facing aspect, and in places that are north of the equator it’s the south-facing aspect.