What is the most concentrated source of stored energy?
Most Industries are concentrated around coal mines or the following reasons- 1. We know that the major industries are iron and steel industry. 2.The iron and steel industry requires heat to melt the steel to form different shapes. 3.Therefore more heat can be generated by the energy stored in the coals. 4.This energy can be easily available as coal mines are nearly located.
No. Most organisms can use various compounds for energy. First of all there are many sugars that can be used for energy such as glucose, galactose, fructose etc... Proteins are another source of energy although less efficient at storing energy than sugars. Of course when the body has an excess of glucose, the energy reserves are stored as lipids (fat) which can later be used to harvest energy.
Solar energy is the most maintence free type of energy and the easiest to be generated by the average home owner. Power can be sent directly into the panel when it is collected and the home owner gets immediate credit for the power generated or it can be stored in batteries and converted to AC power when needed. It is the cleanest, and most trouble-free way to generate electricity.