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ID: 111334

Is smart charging policy for electric vehicles worthwhile? / Lyon, Thomas P; Michelin, Mark; Jongejan, Arie; Leahy, Thomas

Lyon, Thomas P	Journal Article
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Publication

2012.

Summary/Abstract

Plug-in electric vehicles (PEVs) offer the potential for both reducing reliance on oil and reducing greenhouse gas emissions. However, they may also increase the demand for electricity during peak periods, thereby requiring the construction of new generating units and increasing total costs to electricity consumers. We evaluate the economic costs and benefits of policies that shift charging demand from daytime to off-peak nighttime hours, using data for two different independent system operators and considering a number of sensitivity analyses. We find that the total savings from demand-shifting run into the billions of dollars, though as a percentage of total electricity costs they are quite small. The value of smart charging policy varies significantly across electric grids. Time-of-use pricing is worthwhile under all of the cases we study, but the economic benefits of optimal charging of electric vehicles do not appear to justify investing in the smart grid infrastructure required to implement real-time pricing.

Key Words

Electric utilities ; Electric Vehicles ; Time - of - Use Pricing

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ID: 112931

Why do electricity utilities cooperate with coal suppliers? a t / Zhao, Xiaoli; Lyon, Thomas P; Wang, Feng; Song, Cui

Zhao, Xiaoli	Journal Article
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Publication

2012.

Summary/Abstract

The asymmetry of Chinese coal and electricity pricing reforms leads to serious conflict between coal suppliers and electricity utilities. Electricity utilities experience significant losses as a result of conflict: severe coal price fluctuations, and uncertainty in the quantity and quality of coal supplies. This paper explores whether establishing cooperative relationships between coal suppliers and electricity utilities can resolve conflicts. We begin with a discussion of the history of coal and electricity pricing reforms, and then conduct a theoretical analysis of relational contracting to provide a new perspective on the drivers behind the establishment of cooperative relationships between the two parties. Finally, we empirically investigate the role of cooperative relationships and the establishment of mine-mouth power plants on the performance of electricity utilities. The results show that relational contracting between electricity utilities and coal suppliers improves the market performance of electricity utilities; meanwhile, the transportation cost savings derived from mine-mouth power plants are of importance in improving the performance of electricity utilities.

Key Words

Cooperation ; Electricity and Coal Firms ; Coal and Electricity Price

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