what are advantages and disadvantages of conventional sources of energy and non conventional sources of energy

The following are the advantages and disadvantages of conventional sources of energy.

• Advantages

1. Less expensive in terns of harnessing
2. Convinient to use

• Disadvantages

1. Harmful effects on environment
2. Are exhaustible

The following are the advantages and disadvantages of non-conventional sources of energy.

• Advantages

1. Available in nature, thereby avialable free of cost
2. Are inexhaustible

• Disadvantages

1. Expensive to harness 
2. Can be inconvinient to use