The controversy of harnessing solar energy.

          We often hear about solar cars, solar heating, and solar batteries. But will solar energy ever be a major source of energy for society?

          Solar energy is cheaper than other fossil fuels because we can get an abundant source from the sun. In sunny desert areas, 50 % of the sun's radiation that reaches the ground could be used to produce electricity for businesses and industry and to provide heat, light, and hot water for homes. Experimental solar ponds can also produce hot water to drive generators.

          Unfortunately, we can't yet power out homes entirely on sunlight. Solar energy can only be used effectivelly in bright light. Its greatest potential therefore is in hot countries that have clear skies for most of the year. But, unfortunately most houses aren't in the sunniest parts of the world. Moreover, in order to harness solar power solar cells are very cheap to run, but relatively expensive to buy and many people can't afford them.

          Needless to say, solar energy is a useful and non-pollution source of energy. Unfortunately, solar cells, the main device to harness the sun's energy are still very expensive.

Solar Energy

Vocabularies item:

Solar energy: Energy derived from the sun in the form of solar radiation.

Fuels: Combustible matter used to maintain fire, as coal, wood, oil,or gas, in order to create heat or power.

Reaches: To get to or get as far as in moving, going, traveling, etc.

Harness: The combination of straps, bands, and other parts forming theworking gear of a draft animal.