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Solar-powered Cars

One of the ways we can reduce the amount of pollution from traffic seems to power our

vehicles using renewable resources. The cars are reported to use photovoltaic (PV) cells to convert

sunlight into electricity. A single PV cell is known to produce only a small amount of electrical

power. To increase the power, lots of PV cells are connected together to make a 'solar panel'.

Panels can be linked to form a large solar array that is certain to produce enough electricity to

power a car.

When engineers design their electrical systems they have to take into account variations in the

intensity of sunlight. The Sun's energy is supposed to power the car's motor and also charge a

battery for use at night or at times when the Sun is hidden by a cloud. If a car is designed to put all

its energy toward driving and keeps nothing in reserve, it is sure to stop completely in cloudy

weather. If too much energy is diverted to the battery, the engine is found to run too slowly.

Engineers still have many questions and problems to tackle before solar power becomes an

efficient and economical way to fuel vehicles. Today's solar-powered cars are rather expensive but

as the pressure on fossil-fuel resources is certain to increase scientists will continue to search for

alternative energy sources, including harnessing the Sun's energy to drive vehicles. The most

fascinating part of using solar power as an energy source is that it is considered to be pollution-

free and inexhaustible. If research continues, stopping for petrol is likely to become a thing of the

past.