This is good. A BIG problem, with renewable energy is storing large amounts of it until it is wanted to be used, when sun not shining and or wind not blowing. B

This is good. A BIG problem, with renewable energy is storing large amounts of it until it is wanted to be used, when sun not shining and or wind not blowing. Batteries are expensive, ( have limited capacity compared to the total supply needed) and need to be regularly replaced. The need for upgraded/ new transmission lines and network infrastructure is another large cost.