Solar energy is frequently used in residential homes to heat water. This is an easy application, as the desired end result (hot water) is the storage facility. Solar energy is also relatively weak because it must first pass through the atmosphere, which protects the Earth from the sun's intensity. As such, the intermittent and variable manner in which solar energy arrives on the Earth's surface means it creates reliability problems. Solar energy is produced at the core of the sun by nuclear fusion. This energy is then radiated to the convection zone, where mixing transfers the energy to the photosphere.

Photovoltaic energy is the conversion of sunlight into electricity. A photovoltaic cell, commonly called a solar cell or PV, is the technology used to convert solar energy directly into electrical power. Photovoltaic solar energy is produced when the sun's energy, in the form of photons, strikes a photovoltaic cell and is transmitted to electrons within the semiconductor material in the PV cell, causing an electrical current. Each photovoltaic cell generates only a small amount of energy, so many cells are grouped together into a module; then several modules are combined to form a solar panel. Photovoltaic energy systems cost an average of $12,000 to $18,000 per kilowatt, according to data from Solar Services Inc. The price goes down per kilowatt installed.

Solar energy is an easy source of renewable energy to harness for home use. There are many residential solar power systems of different sizes which absorb and store different levels of energy. Solar energy is derived ultimately from the sun. It can be divided into direct and indirect categories. Solar energy is also often used to heat water (a solar collector is mounted in direct sunlight, which warms a heat transfer fluid, which in turn heats the water in your hot water tank).

Solar energy is the energy force that sustains life on the earth for all plants, animals, and people. The earth receives this radiant energy from the sun in the form of electromagnetic waves, which the sun continually emits into space. Solar energy is produced by solar cells, which are also known as photovoltaic devices. The cells are flat structures that absorb the solar energy in sunlight to produce electrical energy. Solar energy is the technology used to harness the sun's energy and make it useable. Today, the technology produces less than one tenth of one percent of global energy demand.

Solar energy is inexhaustible and nonpolluting, but converting solar radiation to electricity is not yet commercially competitive, because of the high cost of producing large-scale solar cell arrays and the inherent inefficiency in converting light to electricity. Solar energy is a highly reliable and proven technology for producing clean energy at your home. A good quality professionally installed solar PV system is likely to outlast the rest of your home. Solar energy is on the rise, and new developments will hopefully keep taking place in order to make this energy form as efficient and cost effective as possible. Take the importance of clean, renewable energy into consideration as you go to the polls this year.

Solar energy is cost effective in terms of fuel (because no fuel is required) and its price would not be affected by the supply and demand of fuels. Solar energy is also pollution free.