Solar Energy in Your Home

Solar energy, radiant light and heat from the sun, has been harnessed by humans since ancient times using a range of ever-evolving technologies. As far back as 5,000 years ago, people "worshiped" the sun. Ra, the sun-god, who was considered the first king of Egypt. In Mesopotamia, the sun-god Shamash was a major deity and was equated with justice. In Greece there were two sun deities, Apollo and Helios. We are now harnessing the sun's power for our own use and it is considered one of the best sources of Green Energy.

Every hour the sun beams onto Earth more than enough energy to satisfy global energy needs for an entire year. 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.

There are many companies who will install solar energy panels on your roof and pay you a percent of the cost of energy generated. Solar cells are also called photovoltaic cells - or PV cells for short - and can be found on many small appliances, like calculators, and even on spacecraft. They were first developed in the 1950s for use on U.S. space satellites. They are made of silicon, a special type of melted sand.

Solar technologies are broadly characterized as either passive solar or active solar depending on the way they capture, convert and distribute solar energy. Active solar techniques include the use of photovoltaic panels and solar thermal collectors to harness the energy.

Solar energy is lauded by environmentalists as an inexhaustible and renewable fuel source that is pollution and mostly noise free. The technology is utilized almost everywhere. For instance, solar cells generate energy for far-out places like satellites in Earth orbit and remote buildings deep in the Rocky Mountains as easily as they can power downtown buildings and futuristic cars.

Even with most intelligent people now admitting that Global Warming is now a fact and will possibly be an economic disaster with increasing damage due to extreme weather it will not be changed overnight. A drastic switch to low carbon-emitting technologies, such as wind and hydroelectric power, may not yield a reduction in global warming until the latter part of this century, new research suggests. Our governments have a hard time planning beyond their next election. The chances of them making any tough decisions politically is hard to imagine.

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