A Comparative Study of Pricing Mechanisms to Reduce Side-Payments in the Electricity Market: A Case Study for South Korea

Under marginal-cost pricing, some generators cannot recover their production costs at the market price due to non-convexities in the electricity market. For this reason, most electricity markets pay side-payments to generators whose costs are not sufficiently recovered, but side-payments present the...

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Main Authors: Hansol Shin, Tae Hyun Kim, Kyuhyeong Kwag, Wook Kim
Format: Article
Language:English
Published: MDPI AG 2021-06-01
Series:Energies
Subjects:
Online Access:https://www.mdpi.com/1996-1073/14/12/3395
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author Hansol Shin
Tae Hyun Kim
Kyuhyeong Kwag
Wook Kim
author_facet Hansol Shin
Tae Hyun Kim
Kyuhyeong Kwag
Wook Kim
author_sort Hansol Shin
collection DOAJ
description Under marginal-cost pricing, some generators cannot recover their production costs at the market price due to non-convexities in the electricity market. For this reason, most electricity markets pay side-payments to generators whose costs are not sufficiently recovered, but side-payments present the problem of deteriorating transparency in the market. Recently, convex hull pricing and extended locational marginal pricing have been reviewed or gradually introduced to reduce side-payments. Another method is to include non-convex costs in the market price, which is applied in the Korean electricity market. Although it is not generally considered in the electricity market, the Vickrey auction method is also one of the pricing mechanisms that can reduce side-payments. The main purpose of this study is to analyze the financial impact of these alternative pricing mechanisms on market participants through rigorous simulation. We applied the alternative pricing schemes to the Korean electricity market, and the impacts are analyzed by comparing the cost aspect of an electricity sales company and the profit aspect of generation companies. As a result of the simulation study, each pricing mechanism not only differed in the degree to which side-payments are reduced but also has different effects on the type of generators.
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spelling doaj.art-cbbc73e79f7143c685482ba080c7e5332023-11-21T23:21:42ZengMDPI AGEnergies1996-10732021-06-011412339510.3390/en14123395A Comparative Study of Pricing Mechanisms to Reduce Side-Payments in the Electricity Market: A Case Study for South KoreaHansol Shin0Tae Hyun Kim1Kyuhyeong Kwag2Wook Kim3Department of Electrical and Electronics Engineering, Pusan National University, Busan 46241, KoreaDepartment of Electrical and Electronics Engineering, Pusan National University, Busan 46241, KoreaDepartment of Electrical and Electronics Engineering, Pusan National University, Busan 46241, KoreaDepartment of Electrical Engineering, Pusan National University, Busan 46241, KoreaUnder marginal-cost pricing, some generators cannot recover their production costs at the market price due to non-convexities in the electricity market. For this reason, most electricity markets pay side-payments to generators whose costs are not sufficiently recovered, but side-payments present the problem of deteriorating transparency in the market. Recently, convex hull pricing and extended locational marginal pricing have been reviewed or gradually introduced to reduce side-payments. Another method is to include non-convex costs in the market price, which is applied in the Korean electricity market. Although it is not generally considered in the electricity market, the Vickrey auction method is also one of the pricing mechanisms that can reduce side-payments. The main purpose of this study is to analyze the financial impact of these alternative pricing mechanisms on market participants through rigorous simulation. We applied the alternative pricing schemes to the Korean electricity market, and the impacts are analyzed by comparing the cost aspect of an electricity sales company and the profit aspect of generation companies. As a result of the simulation study, each pricing mechanism not only differed in the degree to which side-payments are reduced but also has different effects on the type of generators.https://www.mdpi.com/1996-1073/14/12/3395marginal-cost pricingsystem marginal price (SMP)convex hull pricingextended locational marginal price (ELMP)Vickrey auctionside-payment
spellingShingle Hansol Shin
Tae Hyun Kim
Kyuhyeong Kwag
Wook Kim
A Comparative Study of Pricing Mechanisms to Reduce Side-Payments in the Electricity Market: A Case Study for South Korea
Energies
marginal-cost pricing
system marginal price (SMP)
convex hull pricing
extended locational marginal price (ELMP)
Vickrey auction
side-payment
title A Comparative Study of Pricing Mechanisms to Reduce Side-Payments in the Electricity Market: A Case Study for South Korea
title_full A Comparative Study of Pricing Mechanisms to Reduce Side-Payments in the Electricity Market: A Case Study for South Korea
title_fullStr A Comparative Study of Pricing Mechanisms to Reduce Side-Payments in the Electricity Market: A Case Study for South Korea
title_full_unstemmed A Comparative Study of Pricing Mechanisms to Reduce Side-Payments in the Electricity Market: A Case Study for South Korea
title_short A Comparative Study of Pricing Mechanisms to Reduce Side-Payments in the Electricity Market: A Case Study for South Korea
title_sort comparative study of pricing mechanisms to reduce side payments in the electricity market a case study for south korea
topic marginal-cost pricing
system marginal price (SMP)
convex hull pricing
extended locational marginal price (ELMP)
Vickrey auction
side-payment
url https://www.mdpi.com/1996-1073/14/12/3395
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