Solar energy is a renewable, clean energy that has been around for thousands of years in one form or another. Following are the key solar energy facts. 

Solar energy is all about harnessing the power of the sun to produce energy. The sun rains enough solar energy on the Earth in one day to power the entire energy needs of the world for one year. Solar energy is considered a renewable energy source because it will exist for as long as our sun does, estimated to be another 4.5 billion years. Solar energy is also considered a clean energy because it does not produce pollutants or byproducts harmful to the environment. 

Solar energy was the first energy source used by mankind. Of course, the use was limited to drying things and heating caused by direct contact, but it was a use. In modern times, solar energy has been a power source since the early 1950s, but was not widespread due to technological issues which rendered it an ineffective and expensive energy source. With technology advancements, solar energy is moving to the forefront as a potential alternative to fossil fuels. 

The future is indeed bright for solar energy as new solar nanotechnology is close to creating solar platforms that boggle the mind. For instance, a few companies are trying to create solar quantum dots, which will be mixed in the paint you use for your home. Yes, you will actually paint on solar energy panels that will power your home. 

Currently, solar energy is produced primarily through the use of solar cells, also known as photovoltaic cells. The process works by placing the cells in direct sunlight. Sun hits the cells causing a chemical reaction that creates an electric current. The current is then turned into electricity. The problem with these cells, however, is they are only about 15 percent efficient. 

Solar energy is typically classified in two ways, passive solar and active solar. Both approaches produce solar energy, but in very different ways. 

Passive solar is exactly what it sounds like. It does not involve panel systems or other moving mechanisms to produce solar energy. Instead, passive solar involves planning a structure in such a way as to capture the power of the sun with windows, tanks and so on. These systems can be used to heat homes, water and so on. 

Active solar energy systems typically involve some form of solar panels. The panels are oriented to maximize exposure to the sun. Depending on the system, the panels will then either directly convert sunlight to electricity, which is then transformed from direct current electricity to alternate current electricity and stored in batteries or fed into the grid system of the local utility. Active systems are more expensive and complex. 

Solar energy has numerous advantages over other energy platforms. It is produces no pollution, requires little maintenance and comes with significant financial incentives in the form of tax deductions, tax credits and rebates from manufactures. In a majority of states, solar energy can also be sold back to utilities per a concept known as net metering. This reduces the need for batteries and significantly cuts utility bills.  

Unfortunately, solar energy has some disadvantages as well. The initial cost of purchase and installation can be expensive. Second, areas with limited sunlight are problematic. Third, solar energy obviously can’t be produced at night. Despite these disadvantages, solar energy is a booming energy platform. 

The largest producers of solar energy in the world are Germany, Japan and the United States. California has recently introduces a solar initiative devoting over three billion dollars to promoting solar energy use by residents in the state. As these solar energy facts demonstrate, the solar energy platform is coming on strong. 

Many a person, myself included, has gone on and on about the benefits of solar energy. Given this position, one must wonder as to the solar energy uses available for our daily lives. 

Solar energy is an important advance in the effort to save the environment. Perhaps the most easily usable and most convenient of the renewable energy sources (which also include wind and water), solar energy has been used since the beginning of time as a heating source. In the 1830's one of the other solar energy uses was developed, as a solar energy cooker was used on a safari. Since then, many other solar energy uses have been formulated, and almost everyone can take advantage of one of these uses. 

One of the most common of the solar energy uses is to use it as a power source. Since the 1970's, many people have been putting solar collectors on their roofs and using the resulting collected power to run their households. While having enough solar collectors to obtain power that will run an entire house may not be common, it can be done. Most of these types of solar powered homes run their appliances and other needs directly off the solar collectors' power during the day, and use power that was stored from the solar cells in batteries at night. In this way, the homeowner can avoid ever having to use power that was generated by a non-renewable resource. 

Another of the common solar energy uses is to use solar power to heat your hot water. These systems can either use passive solar energy (in the case of heating a tank of water by leaving it out in the sun) or by using solar collectors with a heat transfer fluid. These systems require the homeowner to install solar panels, behind which run tubes filled with fluid. These tubes collect the heat from the sun and transfer it into the fluid – these tubes, filled with the heated fluid, then run around a water storage system, and the heat from the fluid is transferred into the water.  Another way is to have water running through the tubing and have it obtain the sun's heat directly -  this heated water is then pumped into swimming pools, so that pool owners don't need to run a pool heater to keep their water warm. 

In the last 10 to 15 years, solar manufacturers have started to develop new, creative applications for solar power. One development is the portable solar panel, a popular product used on RVs by vacationers. On a smaller scale, there are solar panel packs that fold out like a small ledger and are used to power up anything from laptops to cell phones. As time passes, new products along this line are expected to continue to come on the market. 

It doesn't matter which of the solar energy uses you choose to implement in your own home or life – even a small use of solar power over traditional power sources can help the environment. The more we can use solar energy, the less dependent we become on non-renewable resources, and the more we help the Earth.