Energy is the most important component of economic infrastructure. It is a critical aspect of the development process of a nation. It is essential for industries as no commodity is produced without using energy. Now days, energy is used even in the agricultural sector. It is needed to operate tube-wells, tractors and thrashers. It is also required in houses for cooking. One cannot even think of a day without electricity and other sources of energy like petrol, LPG, etc. Therefore, we can say that energy is the lifeline of the entire production activity.
| Commercial Energy|| Non Commercial Energy|
|(i) The sources of energy that are available to the users at some price are referred to as commercial energy.||(i) The sources of energy that are usually available freely to the users are referred to as non-commercial energy.|
|(ii) This form of energy is used for commercial purposes.||(ii) This form of energy is used for domestic consumption.|
|(iii) For example, coal, petroleum, natural gas and electricity.||(iii) For example, Firewood, agricultural waste, animal waste (cow dung)|