If you are interested in getting to know how solar energy works and reducing a little from your household energy bill, facts about solar energy will help you. Solar energy is a inexhaustible resource and of the earliest method of energy use that is available at present. The important fact about solar energy is that the sun s beams are so powerful that if we are to convert that into energy it would mean that Earth will never run out of energy for at least another four point five billion years according to scientists. Sun never create any hazardous by-product which could harm the environment.
During the early fifties solar energy was looked upon as an substitute to man made energy resources. Over much studies it was found energy could be obtained at much cheaper source. The demand for solar energy has grown substantially within the range of 20-25% over the last twenty years. Solar energy is able to support household gadgets, lighting and water heaters. As of the moment, solar energy is more heavily priced but in the near future with the growth in technological researches, it will bring down the prices and also growth its efficiency. Solar energy is to generate 2.5% of the world s energy consumption by 2025. Solar energy is the fastest growing technology.
There are some primary facts about solar energy that one needs to be acquainted to; solar energy is measured in kilowatt hours and 1 kilowatt=100 watts. One kilowatt hour is equal to the total of electricity which is required to burn 100 watt light bulb for around 10 hours. An average American household consumes 866 kilowatt hours per month. The Residential Energy consumption Survey conducted in 2001 shows that an annual energy bill was around $2000.
A reduction in unit costs has contributed towards an increase in growth rates and thereby making it an critical energy resource. After year 2000, solar energy has shown a growth rate of 40% per annum. Solar energy is moving at a raising rate in the developing countries too as the consumption of fossil fuel has doubled over the years. When compared to solar energy which is unlimited, fossil fuel reserves are diminishing. As compared to expensive power grids, setting up solar energy gadgets is relatively easy. A disadvantage of fossil fuels is that the prices have risen together with the price of transporting coal, oil and gas. These are just a couple of the facts about solar energy.