Initially, two steel firms are each releasing 100 units of pollution, for a total of 200 units. The government wants to reduce emissions by 40%. The steel firms have the following marginal abatement costs (MAC):
MAC(1)=3(A1)
MAC(2)=5(A2)
where A is units of abatement.
If Pigou tax approach is used, what would be the cost to each of the two firms? How much would the government receive?