- Elgar original reference
Edited by Joanne Evans and Lester C. Hunt
Chapter 22: The Economics and Regulation of Power Transmission and Distribution: The Developed World Case
22 The economics and regulation of power transmission and distribution: the developed world case Lullit Getachew and Mark N. Lowry 1 Introduction In this chapter we focus on the economics and regulation of power transmission and distribution (T&D) in the developed world. These wires businesses are natural monopolies. Both involve large fixed costs to transmit and distribute power, a commodity that cannot be stored. Once set up, the T&D assets provide power using variable inputs and exhibit declining average costs indicating the presence of scale economies over a large range of outputs. Thus, it is not economic to have two companies providing ‘wires’ services to customers in the same area. Traditionally, this situation has led to provision of a ‘wires’ license to a business over a defined service territory. To prevent monopoly abuses, countries have historically set up mechanisms to regulate their rates and service provisions and/or have placed them under state ownership. Regulation of T&D utilities has evolved remarkably in the last two decades. Statistical research on the cost of T&D services plays an increasingly prominent role in the regulatory process. The licensing agreements under which T&D utilities operate compel them to provide service to all customers in their service territories. The number of customers connected to their systems is one important ‘driver’ of cost as firms must plan for and invest to accommodate the number of connections. Their planning also takes into consideration the maximum amount of power they expect to wheel or...
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