Energy Sources

We need use our energy sources wisely and economically, and conserve as much of our energy resources as we can. How can we do this? Firstly, we must reduce our dependence on non-renewable resources. For example, can we design or invent vehicles that do not use petrol or diesel as fuel, not electrically or sunlight? If we can, then we reduce our consumption of petroleum. Many scientists and engineers are working on this idea. Or, can we use water and wind power, rather than diesel or petrol or coal power, to generate electrically?

Secondly, we must look for and use alternative fuels and sources. Rather than using coal, kerosene or cooking gas, can we use animal wastes or plant wastes? We have now learnt to extract energy from animal wastes such as cow dung or plant wastes. One successful method is to ferment animal wastes in closed vessels and produce a gas called biogas, which is just as good as cooking gas. The waste from the biogas plant can be used as manure in fields and plantations. A second example is the use of windmills, where wind is used to turn a paddle wheel and to produce electricity or to lift water.

Thirdly, we must make greater and clever use of the sun. The sun is a perennial source of light and heat for the earth, and it is free! If we could device methods for capturing the heat and/or light from the sun and transforming it into electricity, we would greatly benefit.