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Emission Costs, Consumer Bypass and Efficient Pricing of Electricity

Chi-Keung Woo, Benjamin Hobbs, Ren Orans, Roger Pupp and Brian Horii

Year: 1994
Volume: Volume15
Number: Number 3
DOI: 10.5547/ISSN0195-6574-EJ-Vol15-No3-3
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Electricity generation causes external costs because of the emission of air pollutants. Pricing an electric utility's service at the sum of the utility's marginal generation cost and marginal emission cost, however, is inefficient due to "bypass" by large industrial customers and the need to maintain the utility's financial viability. This paper derives the optimal tax on emission and efficient prices for retail service to two customer classes, one of which has the option to self-generate. These rules are used to evaluate the pricing proposals made in a recent rate case in California. These proposals are shown to be inefficient, in that they encourage over-consumption by residential customers who do not have access to alternative sources of electricity supply.

Marginal Capacity Costs of Electricity Distribution and Demand for Distributed Generation

Chi-Keung Woo, Debra Lloyd-Zannetti, Ren Orans, Brian Horii and Grayson Heffner

Year: 1995
Volume: Volume16
Number: Number 2
DOI: 10.5547/ISSN0195-6574-EJ-Vol16-No2-6
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Marginal costs of electricity vary by time and location. Past researchers attributed these variations to factors related to electricity generation, transmission and distribution. Past authors, however, did not fully analyze the large variations in marginal distribution capacity costs (MDCC) by area and time. Thus, the objectives of this paper are as follows: (1) to show that large MDCC variations exist within a utility's service territory; (2) to demonstrate inter-utility variations in MDCC; and (3) to demonstrate the usefulness of these costs in determining demand for distributed generation (DG).

Blowing in the Wind: Vanishing Payoffs of a Tolling Agreement for Natural-gas-fired Generation of Electricity in Texas

Chi-Keung Woo, Ira Horowitz, Brian Horii, Ren Orans, and Jay Zarnikau

Year: 2012
Volume: Volume 33
Number: Number 1
DOI: 10.5547/ISSN0195-6574-EJ-Vol33-No1-8
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We use a large Texas database to quantify the effect of rising wind generation on the payoffs of a tolling agreement for natural-gas-fired generation of electricity. We find that while a 20% increase in wind generation may not have a statistically-significant effect, a 40% increase can reduce the agreement's average payoff by 8% to 13%. Since natural-gas-fired generation is necessary for integrating large amounts of intermittent wind energy into an electric grid, our finding contributes to the policy debate of capacity adequacy and system reliability in a restructured electricity market that will see large-scale wind-generation development.Keywords: Wind generation, Tolling agreement, Spark spread option, Investment incentive

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