Question

unknown difference between convectional source of energy and nonconventional source of energy​

Answer 1

Conventional Sources  

1 Conventional sources of energy (e.g. coal, petroleum and natural gas) are non-renewable sources of energy.

2 They have been in use since a long time. For example, firewood and coal have been in use since a long time.

3 Most of these energy sources (e.g. coal and firewood) cause pollution when used.

4 They are common and widely used sources (e.g. thermal power).

non conventional sources

1Non-conventional sources of energy (e.g. solar and wind energy) are renewable sources of energy.

2These sources have recently developed and are still developing. For example, the technology of producing electricity from solar panels has recently developed.

3 they do not cause any pollution (e.g. solar energy, geothermal energy etc.)

4 They are comparatively new sources of energy and hence are not widely used. For example, solar panels and wind mills are not widely used.