Question

What is the biggest disadvantage of solar electricity, or at least, why is it not used much more than it currently is?

Carbon dioxide emissions
Leads to water and air pollution
Not renewable
Very costly

Answer 1

Very costly.

Step-by-step explanation:

Answer 2

The reason why solar electricity is not widely used yet is that it is

Very costly

Despite the fact it is a very clean form of energy (it does not produce any carbon dioxide or other forms of waste), solar electricity is not very used yet due to the high cost of the solar panels and building solar plants.