Conventional sources of energy | Non-conventional sources of energy |
They are exhaustible. | They are inexhaustible |
They cause pollution. | They do not cause pollution. |
eg: coal, petroleum, natural | eg: wind energy, solar energy |
Thermal electricity generation | Solar thermal electricity generation |
It uses non-renewable source of energy for electricity generation such as fossil fuels, natural gas or nuclear fuels. | It uses renewable source of energy i.e. solar energy for electricity generation. |
This method of electricity generation is not environment friendly. It causes air pollution. | This is environment friendly method of electricity generation. It does not cause air pollution. |
This method requires maintenance. | This method does not require maintenance. |