AbstractWith the increased use of non-renewable resources for the production of energy and their consequent decline and probable exhaustion, decision-makers have to look at other means of providing power. A sustainable energy future requires us to work within the limits imposed by environmental and natural resource constraints.The efficient use of renewable resources is of paramount importance, as is the replenishment of the stock of fuelwood in developing countries. Of equal significance is to harness the effects of solar radiation especially in areas of abundant sunlight. Full awareness of the problems is fundamental to their solution.