Which of the following are features of smart grids? (Select the best four answers.)
A smart grid doesn't allow customers to produce their own power.
Customers can set appliances to run when cheap energy is available.
Customers can sell electricity back to the power plant.
A smart grid can only use one source of energy.
Electricity is usually produced by wind farms
Electricity is routed in the most efficient way possible
Customers pay the same price for electricity, no matter what time of day it is.