If we stop to think of all the ways in which we squander the energy at our disposal throughout the day, we would surely be surprised. And in developing countries with fewer resources, this is something that can make a real difference.
A magnificent example of how to make the most of the energy we produce, regardless of how little it may be, is this idea called Double Warm. It is a simple kitchen meant for people with minimal resources and its design includes water containers on the sides where water is stored to be heated as soon as the kitchen is turned on to cook with. No energy is wasted.