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Measuring Productivity Gains from Deregulation of the Japanese Urban Gas Industry

Kenta Tanaka and Shunsuke Managi

Year: 2013
Volume: Volume 34
Number: Number 4
DOI: 10.5547/01956574.34.4.9
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Abstract:
The Japanese government initiated a series of regulatory reforms in the mid-1990s. The Japanese urban gas industry consists of various sized private and non-private firms. Numerous previous studies find that deregulation leads to productivity improvements. We extend the literature by analyzing deregulation, privatization, and other aspects of a regulated industry using unique firm level data. This study measures productivity to evaluate the effect of the deregulation reform. Using data from 205 firms from 1993 to 2004, we find that the deregulation effect differs depending on firm size. Competitive pressure contributes to advanced productivity. The deregulation of gas sales to commercial customers is the most important factor for advancing productivity.



Introduction to the Special Issue on "Competition in the Electricity Sector"

David C. Broadstock and Shunsuke Managi

Year: 2020
Volume: Volume 41
Number: Special Issue
DOI:
No Abstract



The Impact of Renewable Energy Generation on the Spot Market Price in Germany: Ex-Post Analysis using Boosting Method

Alexander Ryota Keeley, Ken’ichi Matsumoto, Kenta Tanaka, Yogi Sugiawan, and Shunsuke Managi

Year: 2020
Volume: Volume 41
Number: Special Issue
DOI: 10.5547/01956574.41.SI1.akee
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Abstract:
This study combines regression analysis with machine learning analysis to study the merit order effect of renewable energy focusing on German market, the largest market in Europe with high renewable energy penetration. The results show that electricity from wind and solar sources reduced the spot market price by 9.64 €/MWh on average during the period from 2010 to 2017. Wind had a relatively stable impact across the day, ranging from 5.88 €/MWh to 8.04 €/MWh, while the solar energy impact varied greatly across different hours, ranging from 0.24 €/MWh to 11.78 €/MWh and having a stronger impact than wind during peak hours. The results also show characteristics of the interactions between renewable energy and spot market prices, including the slightly diminishing merit order effect of renewable energy at high generation volumes. Finally, a scenario-based analysis illustrates how different proportions of wind and solar energies affect the spot market price.





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