Reason For Regulating Natural Monopolies Essay


Discuss about the Reason for Regulating Natural Monopolies and the Effective Strategies.



A natural monopoly is a single firm that supplies a certain line of product for the whole market. It originates from the definition of monopoly where a single seller suppliers the entire market (Bennett & Coleman, 2017). This firm has the ability to produce high level of output at a lower cost (Molinuevo & S?ez, 2014). This ability is created by the presence on entry barriers and the fact that the single firm has increased economies of scale. The government has a role of ensuring that businesses are operated efficiently and that the output is sold at a fair price. The government has two options to ensure fair pricing is observed; one is that it can own the natural monopoly or it can regulate those that are privately owned (McEachern, 2013). The notion that the natural monopoly needs to be regulated is self-explanatory that there is a possibility of unfair practices if the single firm is left to operate with no regulation (Int'L Business Publications, 2015). The major reason why the government should regulate this firm is because it is the only firm that the whole economy depends on and that the product is on high demand and thus a high possibility of high pricing. Economic regulation has two view; one is that it is interested in the consumers’ or public welfare by controlling the natural monopoly where a single firm’s production is more efficient than in a competitive industry. The other view is that producers are interested in the regulation because they depend on it when fixing prices, raising profits and creating entrance barriers. This paper will try to determine whether there is more benefit in regulating a natural monopoly rather than encouraging competition. It will also identify the group that benefit much from the regulation.

The theories put forward to explain the strategies the government should implement to regulate the natural monopolies are many. Some of the theories to be covered are the marginal cost pricing, average cost pricing, price caps, etc. All these theories try to establish the way in which the goods offered by the natural monopoly is affordable to the citizens and thus an improvement in social welfare. Other theories such as capture theory and public interest theory shows the interests the government have under regulation. The capture theory tell us that the regulator are interested with the operations of the producer. The public interest theory poses that the interest of the government is on maximizing social welfare by preventing an abuse of market power.


Pettinger (2012) gave several types of natural monopolies and argued that it is more efficient for a single firm to supply the whole economy than a multiple of firms. The reason he posed out is that the fixed costs for the single firm is high and that there is a huge capital requirement to initiate the distribution of the resources supplied by a natural monopoly. He argued that the average cost for the multiple firms would be higher compared to the single firm because this firm already has significant economies of scale. Some of the examples given include tap water; laying of pipes to supply to the entire economy is capital intensive, electricity; its distribution networks are very expensive to initiate, railway transportation; the cost of laying the rails is very high and thus not practically available for competition, the gas distribution and postal services, etc. Economies of scale is the advantage of reduced costs of production enjoyed when a natural monopoly firm produced high level of output as shown in the image below.

The economies of scale creates a rationale for the government to allow the operation of a natural monopoly rather than allowing competition in this industry. The Average cost of producing Qa units by a multiple of producers is Aca, whereas the cost for producing the higher level quantity Qb by the same natural monopoly is ACb. If a single firm is able to produce quantity Qb at a cost ACB, let’s assume that there was entrant of another firm in this industry; if Qb is the maximum level of demand, then it means that the two firms will produce the same level of output; say that each firm produces a half of Qb. This would be at a higher cost as indicated by quantity Qc and cost ACc. This firm has market power for being able to produce at the lowest cost; and this is where the public interest theory comes in. Terry (2012) noted at if there is much benefit for the single firm to supply to the entire economy, the abuse of market power can only be eliminated by the government regulation of price and quantity.

Unregulated Natural Monopoly Pricing

If the firm was to make its own pricing decision, it would aim at maximizing its profit by producing 10 units of output and selling at $8. This is where its marginal revenue equates its marginal cost (MR = MC) (Welker, 2017). If production took place at this point, the natural monopoly makes an economic profit equal to the shaded area ighj. At this point the consumer surplus is area kij; the consumer surplus is so small and the rest is the producer surplus. This is achievable through causing a deadweight loss equal to jbc. The reason for making an economic profit is that the AC curve at this production point is below the demand curve. The average total cost of producing 10 units is $5 and any price charged above this is the economic profit.

Marginal Cost Pricing

This is the first option the regulators can consider implementing; this is by ensuring that the optimal social output of 25 units are produced and sold at a social optimal price of $2. This is at the intersection of marginal cost and the industry’s demand curve. The government regulation may be such that it forces the natural monopoly to produce at this competitive level and sell at the lower price. If this happens, the natural monopoly will make economic losses since producing 25 units of output requires a cost of $4 which is above the price at which the final output is sold. The economic loss is equivalent to area acdf and may affect the sustainability of the monopoly’s production in the future. However, it’s possible for this output to be produced and sold at $2 if only the government subsidized the firm for the economic losses (, 2017). This is where the capture theory comes in; the government have to ensure that no losses results on the producer’s side from producing at the regulated price level. At this point, the consumer surplus is very high and is equivalent to area ack and thus maximizes the social welfare which is the government’s goal. There is much benefit for the consumers, while the government subsidies allow the natural monopoly to break even.

Average Cost Pricing

This is the second option and is considered to be the most appropriate level although the social welfare is not maximized. This is where 20 units of output are produced and sold at the fair-return price shown above. This is at the intersection of the firm’s ATC and the industry’s demand curve (Mankiw, 2011). This is the point at which the firm breaks even and makes no economic profit or loss. Since normal profits are made at this level, regulation would help in sustaining the future production process for this firm. The output produced is higher than the 10 units produced without regulation and the price is lower than $8 the unregulated price. The consumer surplus is also higher than for unregulated monopoly and is equivalent to area kfe.

Regulator’s RPI-X Price Capping

This is where the government employs various bodies to limit price increases for utilities such as electricity, water and gas (Tejvan, 2016). The formula used by the regulators is known as the RPI-X where X is the real amount of price increase. An increase is allowable during inflation period. For instance if X is set at 2% and inflation rises by 5%, the natural monopoly may raise price by 5 – 2 = 3%. The advantage of this is that it is adjustable according to the additional cost requirement where the value of x is reduced. If a natural monopoly is said to be charging high prices, the value of X is raised. It creates an incentive for cost cutting since profit is increased if cost is lowered. The challenge is determining the value of X.

Peak Load Pricing

This is a two-period kind of price discrimination. There is a period when certain utilities demand is very high and lower in others. This may happen during a single day. An example of such is the electricity consumption; more demand for electricity is experienced during the night as compared to during the day. The peak period is at night and off-peak period during the day. It’s advisable for the natural monopolist to charge hiked prices during the peak period and lower prices when demand is low (Schindler, 2012). This increases efficiency because demand is reduced when prices are high; this enables the supplier to meet the increased demand.

The peak demand curve is d and the off-peak demand curve is d1. The peak demand quantity is x and the off-peak demand quantity is x1. The peak price is P1 and the off-peak price is P. point A is the peak equilibrium whereas point E is the off-peak equilibrium. There are net gains for increased demand in the off-peak period and reduced demand in the peak period. Peak load pricing is thus advantageous in promoting efficiency in distribution. However, it is a disadvantage to firms whose production operations are tied to peak period since it adds to their production costs.


A natural monopoly should be maintained as a sole provider of the specific good rather than making this industry a competitive one. It is more economical for the single firm to produce for the whole market demand rather than when more firms are involved. An investor should understand his/her market structure in order to determine the regulations governing the business. Competition is good for an economy, but some natural monopolies should be allowed some market powers with regulation. The various regulations by the government are applicable on different situations which the government should take into consideration.


It has been deducted from the above research that a natural monopoly is profit oriented if unregulated and thus will only produce the quantity that maximizes its profit (the economic profit level is at MC = MR). At this point, the price for the good charged is unaffordable since it’s very high. There is lack of competition in this market and this gives the supplying firm significant market power over its output and price; more often, this market power is abused and market price is hiked by limiting output. The government regulates the natural monopoly to ensure that there is sufficient output production that is sold at a lower price by preventing it from maximizing its profit; this is by ensuring that it fixes output and price. There is a challenge for regulators in regulating the price for the natural monopoly; the price that is said to maximize the social welfare is inefficient as it leads to the monopoly making economic losses, and the price charged by the monopoly in order to make some economic profit do reduce the social welfare. The reason for regulation by the government is therefore because it need some firms to retain their monopoly state without abusing their market power. But the outcome of regulation is considered better than without regulation. The research has therefore provided the insight on why natural monopolies should be regulated and also provided various ways in which this can be done.


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