Facts about solar energy help you to understand how solar energy works and how you can save some dollars without having to run a high energy bill. Solar energy is a inexhaustible resource and of the oldest method of energy use that is available at nowadays. The important fact about solar energy is that the sun s rays 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. The sun does not create any other hazardous by products which could harm the natural environment.
During the early fifties solar energy was looked upon as an substitute to man made energy resources. Over some research it was found energy could be acquired at some 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 home appliances, lighting and water heaters. As of the minute, solar energy is more heavy priced but in the near future with the increase in technological studies, it will bring down the costs and also growth its efficiency. By 2025, it is expected to generate 2.5% of the world energy demand through solar energy. Solar energy can be considered as the fastest growing technology.
There are some fundamental facts about solar energy that one needs to be presented to; solar energy is measured in kilowatt hours and 1 kilowatt=100 watts. One kilowatt hour is equal to the amount of electricity which is wanted to burn 100 watt light bulb for approximately 10 hours. 866 kilowatt is the consumption by an average American household. The Residential Energy consumption Survey conducted in 2001 shows that an annual energy bill was around $2000.
A reduction in unit costs has added towards an growth 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 increasing rate in the developing countries too as the use of fossil fuel has doubled over the years. When compared to solar energy which is unlimited, fossil fuel reserves are decreasing. Setting up solar energy appliances is relatively easier in the more remote areas in comparison for setting up an expensive power grid structure. 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.