Question

What is the significance of energy ? Differentiate between commercial and non-commercial sources.

Answer 1

Energy is essential for all the three sectors, viz. primary, secondary and teritary sector. It is a critical aspect of the development process of nation. It is also required in houses for cooking, household lighting, heating, etc.

The differences between commercial and non-commercial sources of energy are

$\begin{array}{cc}\text{Commercial Sources of Energy}& \text{Non-Commercial Sources of Energy}\\ \text{Consumers have to pay a price}& \text{Consumers do not have to pay}\\ \text{for energy generated through}& \text{a price for energy generated}\\ \text{these sources.}& \text{through these sources.}\\ \text{These sources of energy are}& \text{These sources are generally}\\ \text{exhaustible.}& \text{renewable.}\\ \text{These sources are used by}& \text{These sources are generally}\\ \text{business.}& \text{used by households}\\ \text{Coal, petroleum and electricity}& \text{Firewood and cow-dung are}\\ \text{are examples of commercial}& \text{examples of non-commercial}\\ \text{sources of energy}& \text{sources of energy}\end{array}$