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Solar energy for residential houses is nothing new. It has just been relegated to the background in lieu of rising cost of real estate; newer more advanced building materials, design and the limitation of resources.

Solar PV for Holmes

Since man started building homes, sunlight played a major influence in the design. In fact, even in the more advanced urban planning method of the Ancient Chinese and Greeks, the orientation of the buildings is as much as possible directed towards where it could capture the most sunlight.

The ancients might not be as intellectually sophisticated then to use catch phrases as passive solar and thermal mass but when they build, they were building in compact proportion, employing overhangs, producing insulations and building in manners that direct the airflow within the structure and producing well lit, well ventilated spaces using the relative position of the sun to the orientation of their structures.

Lately, as the conventional sources of energy became more expensive, homeowners were once again turning to the sun for energy requirements.

Since the 1950’s, harnessing the sun’s rays has been developing and today the solar cell technology has achieved very efficient levels that modern (so-called green house) designs apply the sun’s power to provide energy for the home.

While solar energy is free, the device that will convert it to run our appliances is not. To provide solar energy for the home, solar cells called photovoltaic made from semi-conducting materials, are grouped into modules. These solar panels are mounted on rooftops, yards or open spaces where it can capture the maximum amount of sunlight.

Whenever possible, the panels will be installed facing north in South Africa to get the most out of the sunlight. Tracking systems are also used to follow the direction of the sun. Solar panels collect energy from the sunlight. The process basically is that when the panels are exposed to sunlight, the electrons are separated from the atoms. This movement of the electrons creates electricity.

Powering homes by solar will still, for a while be augmented by a local power distribution agency. To many, this is already a good starting point.

However, due in part to the rising costs of energy, the technology for solar energy has been undergoing rapid phases of development. Experts are confident that within five years, powering homes through Solar PV systems will be made widely available for those who prefer to make use of alternative energy.

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