The impact of variable renewable energy penetration on wholesale electricity prices in Japan

Sakaguchi, Makishi and Fujii, Hidemichi (2021): The impact of variable renewable energy penetration on wholesale electricity prices in Japan.

Abstract

The merit order effect (MOE), which renewable energy sources can decrease wholesale electricity prices, plays an important role in establishing low-carbon societies. After the liberalization of the electricity market, the trade volume of the Japan Electric Power Exchange (JEPX) day-ahead spot market drastically increased between 2016 and 2019; however, price spikes still occur often. Ordinary least squares and quantile regression analyses were applied in this study to investigate how wind and solar photovoltaics (PV) energy generation affect the JEPX day-ahead spot price by time, price range, and area, and we concluded that the MOE of wind increased between 2016 and 2019 while that of PV decreased during this time. In regard to the high price ranges, although wind generation is not significant in terms of reducing price spikes, PV had this effect in 2016 and 2017 but not during the other years covered. The study area was divided into four regions, and each area followed trends that were different from those of the national analysis. Overall, the key finding of our study is that wind power has more potential to reduce electricity prices than PV.

• Item Type: MPRA Paper
• Language: English
• Keywords: merit order effect; wholesale electricity market; renewable energy
• Subjects: Q - Agricultural and Natural Resource Economics ; Environmental and Ecological Economics > Q4 - Energy > Q42 - Alternative Energy Sources; Q - Agricultural and Natural Resource Economics ; Environmental and Ecological Economics > Q4 - Energy > Q43 - Energy and the Macroeconomy; Q - Agricultural and Natural Resource Economics ; Environmental and Ecological Economics > Q5 - Environmental Economics > Q54 - Climate ; Natural Disasters and Their Management ; Global Warming

References

Cabinet of Japan, 2020. Press conference by the chief cabinet secretary. (Accessed on 12 October 2021). https://japan.kantei.go.jp/tyoukanpress/202010/26_p.html

Chubu Electric Power Grid, Demand Data. Available online: https://powergrid.chuden.co.jp/denkiyoho/ (Accessed on 12 October 2021).

Chugoku Electric Power Transmission & Distribution Company, Demand Data. Available online: https://www.energia.co.jp/nw/service/retailer/data/area/index.html (Accessed on 12 October 2021).

Clò, S., Cataldi, A., Zoppoli, P., 2015. The merit-order effect in the Italian power market: the impact of solar and wind generation on national wholesale electricity prices. Energy Policy 77, 79–88. https://doi.org/10.1016/j.enpol.2014.11.038.

Cludius, J., Hermann, H., Matthes, F.C., Graichen, V., 2014. The merit order effect of wind and photovoltaic electricity generation in Germany 2008–2016: estimation and distributional implications. Energy Econ. 44, 302–313. https://doi.org/10.1016/j.eneco.2014.04.020.

Csereklyei, Z., Qu, S., Ancev, T., 2019. The effect of wind and solar power generation on wholesale electricity prices in Australia. Energy Policy 131, 358–369. https://doi.org/10.1016/j.enpol.2019.04.007.

Dickey, D.A., Fuller, W.A., 1979. Distribution of the estimators for autoregressive time series with a unit root. J. Am. Stat. Assoc. 74, 427–431. https://doi.org/10.2307/2286348.

Hagfors, L.I., Paraschiv, F., Molnar, P., Westgaard, S., 2016. Using quantile regression to analyze the effect of renewables on EEX price formation. Renew. Energy Environ. Sustain. 1, 32. https://doi.org/10.1051/rees/2016036.

Hokkaido Electric Power Network, Demand Data. Available online: https://www.hepco.co.jp/network/renewable_energy/fixedprice_purchase/supply_demand_results.html (Accesed on 12 October 2021).

Hokuriku Electric Power Transmission & Distribution Company, Demand Data. Available online: http://www.rikuden.co.jp/nw_jyukyudata/area_jisseki.html (Accessed on 12 October 2021).

IEA,2021. IEA World Energy Statistics and Balances 2021(database). https://www.iea.org/data-and-statistics/data-product/world-energy-balances

IPCC, 2018. Summary for policymakers of IPCC special report on global warming of 1.5°C approved by governments. (Accessed on 12 October 2021) https://www.ipcc.ch/2018/10/08/summary-for-policymakers-of-ipcc-special-report-on-global-warming-of-1-5c-approved-by- governments/ Japan Electric Power Exchange. Available online: http://www.jepx.org/market/index.html (Accessed on 12 October 2021).

Kansai Transmission and Distribution, Demand Data. Available online: https://www.kansai-td.co.jp/denkiyoho/area-performance.html (Accessed on 12 October 2021).

Keeley, A.R., Matsumoto, K.I., Tanaka, K., Sugiawan, Y., Managi, S., 2021. The impact of renewable energy generation on the spot market price in germany: ex-post analysis using boosting method. Energy J. 41. https://doi.org/10.5547/01956574.42.S12.akee.

Kyushu Electric Power Transmission and Distribution, Demand Data. Available online: https://www.kyuden.co.jp/td_service_wheeling_rule-document_disclosure.html (Accessed on 12 October 2021).

Maciejowska, K., 2020. Assessing the impact of renewable energy sources on the electricity price level and variability – A quantile regression approach. Energy Econ. 85, 104532. https://doi.org/10.1016/j.eneco.2019.104532.

Maekawa, J., Hai, B.H., Shinkuma, S., Shimada, K., 2018. The effect of renewable energy generation on the electric power spot price of the Japan electric power exchange. Energies 11, 2215. https://doi.org/10.3390/en11092215.

Marshall, A., 1890. Principles of Economics, Palgrave Macmillan, Amherst, NY.

Ministry of Economy, Trade, and Industry, 2018. The strategic energy plan. Available online: https://www.enecho.meti.go.jp/en/category/others/basic_plan/.

Ministry of the Environment, 2020. Entrusted work concerning the development and disclosure of basic zoning information concerning renewable energies (FY 2019).

Ministry of Finance, Trade Statistics of Japan. Available online: https://www.customs.go.jp/toukei/info/index_e.htm

Paraschiv, F., Ermi, D., Pietsch, R., 2014. The impact of renewable energies on EEX day-ahead electricity prices. Energy Policy 73, 196–210. http://dx.doi.org/10.1016/j.enpol.2014.05.004

Quint, D., Dahlke, S., 2019. The impact of wind generation on wholesale electricity market prices in the midcontinent independent system operator energy market: an empirical investigation. Energy 169, 456–466. https://doi.org/10.1016/j.energy.2018.12.028.

Renewable Energy Institute, 2018. Analysis of Wind Power Costs in Japan, 50 pp.–Translated from Japanese https://www.renewable-ei.org/en/activities/reports/img/pdf/20180125/JapanWindPowerCostReport_EN_20180124.pdf

Renewable Energy Institute, 2019. Solar Power Generation Costs in Japan Current Status and Future Outlook https://www.renewable-ei.org/pdfdownload/activities/Report_SolarPVCostJapan_EN.pdf

Shikoku Electric Power Transmission & Distribution Company, Demand Data. Available online: https://www.yonden.co.jp/nw/renewable_energy/data/supply_demand.html (Accessed on 12 October 2021).

Sirin, S.M., Yilmaz, B.N., 2020. Variable renewable energy technologies in the Turkish electricity market: quantile regression analysis of the merit-order effect. Energy Policy 144, 111660. https://doi.org/10.1016/j.enpol.2020.111660.

TEPCO Power Grid, Demand Data. Available online: https://www.tepco.co.jp/forecast/html/area_data-j.html (Accessed on 12 October 2021).

Tohoku Electric Power Network, Demand Data. Available online: https://setsuden.nw.tohoku-epco.co.jp/download.html (Accessed on 12 October 2021).

Yoshihara, K., Ohashi, H., 2017. Assessing the Impact of Renewable Energy Sources: Simulation Analysis of the Japanese Electricity Market. Discussion Paper Series 17-E-063, RIETI, Tokyo, Japan.

Zipp, A., 2017. The marketability of variable renewable energy in liberalized electricity markets – An empirical analysis. Renew. Energy 113, 1111–1121. https://doi.org/10.1016/j.renene.2017.06.072.