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Wind, Storage, Interconnection and the Cost of Electricity Generation

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  • Di Cosmo, Valeria
  • Malaguzzi Valeri, Laura

Abstract

We evaluate how increasing wind generation affects wholesale electricity prices, balancing payments and the cost of subsidies using the Irish Single Electricity Market (SEM) as a test system, with hourly data from 1 January 2008 to 28 August 2012. We model the spot market using a system of seemingly unrelated regressions (SUR) where the regressions are the 24 hours of the day. Wind has a negative impact on the system marginal price, with every MWh increase in wind generation (equal to about 0.2% of the average wind generation in our sample) leading to a decrease of the system marginal price of €0.018/MWh, or about 0.3% of its average value. We use time series models to analyse the balancing market and show that wind generation increases balancing payments, as do the forecast errors of demand and wind. Every MWh of additional wind generation is associated with an increase in constraint payments of €3.2, or about 0.01%. Lack of storage increases the impact of wind on balancing payments whereas the lack of interconnection has no effect. Overall, wind decreases costs through its effect on the electricity price more than it increases constraint payments, even when storage is on outage. The effect of wind remains positive after including the cost of subsidies given to wind generation.

Suggested Citation

  • Di Cosmo, Valeria & Malaguzzi Valeri, Laura, 2017. "Wind, Storage, Interconnection and the Cost of Electricity Generation," ESP: Energy Scenarios and Policy 253733, Fondazione Eni Enrico Mattei (FEEM).
  • Handle: RePEc:ags:feemes:253733
    DOI: 10.22004/ag.econ.253733
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    9. Ioannidis, Filippos & Kosmidou, Kyriaki & Papanastasiou, Dimitra, 2023. "Public awareness of renewable energy sources and Circular Economy in Greece," Renewable Energy, Elsevier, vol. 206(C), pages 1086-1096.
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    11. Carlini, Federico & Christensen, Bent Jesper & Datta Gupta, Nabanita & Santucci de Magistris, Paolo, 2023. "Climate, wind energy, and CO2 emissions from energy production in Denmark," Energy Economics, Elsevier, vol. 125(C).
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    Keywords

    Resource /Energy Economics and Policy;

    JEL classification:

    • L94 - Industrial Organization - - Industry Studies: Transportation and Utilities - - - Electric Utilities
    • Q42 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Energy - - - Alternative Energy Sources

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