Question

How much energy from a coal power plant makes it to customers as electricity?

Answer 1

A third

Explanation:Effenciency of conversion to electricity from coal is about 40% from the power plant to customer there are many types of energy loses such step-up,step-down loss,transmission loss,distribution loss etc.Suppose all this make upto 7%.

therefore,
40%-7%=33% will available to customers,i.e a third.