Solar energy is the most widely available renewable energy source and it is sufficient to meet entire needs of the world. However, it is not used extensively. Why?

Solar energy is one of the Renewable sources of energy and it is sufficient to meet the entire needs of the world.

But it is not used extensively because of the inconsistency. Inconsistency means that sun rays are not consistent throughout the year. If the weather is not good or in winters earth does not receive sun rays continuously.

And another reason to not to set up solar energy is that it is very expensive not everyone can afford it.