Answer:
a. economies of scale.
Explanation:
Economics of scale refers to a scale in which there is a benefit of the cost that occurs when there is an efficient production
It can be accomplished by rising the production at less cost this arise as cost are allocated among the larger number of goods
Here, the local electricity who generated the company has a monopoly and are safe from the entry barrier
So this is a case of economies of scale
Hence, the correct option is a. economies of scale
