電力市場統合が再生可能エネルギー促進によるCO2排出削減コストに与える影響
The Impact of Electricity Market Integration on the Cost of CO 2 Emissions Abatement Through Renewable Energy Promotion (原題)
Felix Michelet
🤖 gxceed AI 要約
日本語
スペイン・フランス間の電力連系線拡張を利用し、市場統合がスペインの風力発電によるCO2削減量と電力価格に与える影響を推定。統合後、スペインの風力による限界CO2削減効果は低下し、フランスでは増加。スペインの風力補助金制度のCO2削減コストは統合前は消費者に便益（29.6€/tCO2）があったが、統合後は純コスト（6.3€/tCO2）に転じた。社会的厚生の観点から、炭素の社会的費用が67€/tCO2（統合前）または72€/tCO2（統合後）を超える場合に補助金政策が厚生改善的であると示す。
English
This paper exploits the expansion of the Spanish-French electricity interconnector to estimate the effect of market integration on CO2 emissions avoided by Spanish wind and electricity prices. Integration increased emissions avoided in France but decreased them in Spain, reducing the net marginal abatement effect of Spanish wind. The cost of reducing CO2 through the Spanish wind subsidy shifted from a consumer gain of 29.6€/tCO2 before expansion to a net cost of 6.3€/tCO2 after. The subsidy is welfare-improving if the social cost of carbon exceeds 67€/tCO2 (pre-expansion) or 72€/tCO2 (post-expansion).
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
日本では、再生可能エネルギーの導入拡大と電力市場改革が進む中、市場統合や連系線強化がCO2削減コストに与える影響は重要な論点。本論文の分析手法は、日本の広域連系や再生可能エネルギー促進政策の評価に示唆を与える。特に、FIT制度の費用対効果を市場統合の文脈で再評価する際の参考となる。
In the global GX context
This paper contributes to the global discourse on electricity market integration and renewable energy policy, providing empirical evidence on cross-border effects and cost-effectiveness. It highlights the importance of considering market integration when assessing the welfare impacts of renewable subsidies, relevant for regions like the EU and the US where interconnections are expanding. The methodology can inform policy design for cost-effective decarbonization.
👥 読者別の含意
🔬研究者:Provides empirical evidence on how market integration alters the cost-effectiveness of renewable subsidies, useful for energy policy and environmental economics research.
🏢実務担当者:Offers insights for utilities and renewable developers on how cross-border interconnection affects the value of wind generation and subsidy costs.
🏛政策担当者:Informs policymakers on the distributional and welfare effects of renewable subsidies under market integration, relevant for designing efficient support schemes.
📄 Abstract（原文）
The integration of electricity markets is widely promoted for enhancing competition and energy security. However, its impact on emissions and renewable energy deployment remains unclear. This paper exploits the expansion of the Spanish-French electricity interconnector to estimate the effect of integration on the quantity and location of CO 2 emissions avoided by Spanish wind production and on electricity prices of both countries. I find that integration has increased the amount of emissions avoided in France but decreased that in Spain for each additional megawatt-hour of Spanish wind. Since the gain in France is smaller than the loss in Spain, the net marginal CO 2 abatement effect of Spanish wind has declined. On prices, the previously non-significant impact on French prices before the expansion becomes significant afterwards, highlighting cross-border merit order effect. I then calculate the cost of reducing 1 ton of CO 2 through the Spanish wind subsidy program. Before the expansion, Spanish consumers gained 29.6€/tCO 2 avoided. After the expansion, the merit order effect no longer offsets the subsidy cost, resulting in a net cost of 6.3€/tCO 2 . Meanwhile, French consumers benefit for free from the abatement of 2.5 megatonnes of CO 2 annually, financed at a cost of 150€/tCO 2 by the Spanish consumer post-expansion. Finally, I assess the marginal welfare effect of wind power, accounting for both emissions abatement and the price-induced reduction in producer surplus. The subsidy policy is welfare-improving if the social cost of carbon exceeds 67€/tCO 2 before the expansion and 72€/tCO 2 afterwards. JEL Classification : D61, Allocative Efficiency; Cost-Benefit Analysis; Q40, Energy: General; Q42, Alternative Energy Sources; Q52, Pollution Control Adoption and Costs; Distributional Effects; Employment Effects
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1177/01956574261469479first seen 2026-08-22 04:41:14
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