The Effectiveness of Wind and Solar Power Generation in CO2 Emissions Abatement in Greece
ギリシャにおけるCO2排出削減に対する風力・太陽光発電の有効性 (AI 翻訳)
Georgios I. Maniatis, Nikolaos T. Milonas
🤖 gxceed AI 要約
日本語
本論文は、ギリシャ電力系統の2012年8月から2018年12月までの1時間ごとの運用データを用いて、風力発電と太陽光発電の限界的なCO2削減効果を実証的に推定した。風力発電は太陽光発電よりもMWhあたりの炭素削減効果が高く、特に炭素集約型のベースロード電源を代替する。一方、太陽光発電はゼロカーボンの水力発電や純輸入電力を代替する傾向があり、国内での削減効果を弱めている。また、限界排出回避量は非線形であり、系統負荷や連系線潮流、再エネ普及率によって変動する。
English
This study uses hourly dispatch data from the Greek electricity system (Aug 2012 – Dec 2018) to estimate the marginal CO2 abatement efficiency of wind and solar power. Wind power achieves higher carbon savings per MWh than solar, primarily by displacing carbon-intensive thermal baseload, while solar often displaces zero-carbon hydro and imports, reducing its domestic abatement. The marginal emissions avoided are nonlinear, varying with system load, interconnections, and renewable penetration. The findings provide a benchmark for evaluating renewable integration.
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
ギリシャの事例ではあるが、風力と太陽光のCO2削減効果の違いを定量的に示した点は、日本においても再エネ大量導入時の系統運用や発電ミックス計画に示唆を与える。特に、太陽光が水力や輸入電力を代替するという「漏れ」効果は、日本の地域間連系線を通じた影響分析にも応用可能である。
In the global GX context
This paper offers empirical evidence on the differential CO2 abatement efficiency of wind and solar, highlighting that solar's displacement of zero-carbon sources can reduce its net benefit. These findings are globally relevant for grid operators and policymakers designing renewable energy support schemes, especially as renewable penetration increases and curtailment becomes more common.
👥 読者別の含意
🔬研究者:Provides an econometric framework to quantify ex-post displacement dynamics and non-linear marginal emissions, applicable to other grids.
🏢実務担当者:Offers insights for grid operators on the carbon value of wind vs. solar, informing unit commitment and renewable integration strategies.
🏛政策担当者:Highlights that renewable portfolio design should consider technology-specific abatement efficiency to maximize decarbonization outcomes.
📄 Abstract（原文）
This study empirically isolates the marginal CO2 abatement efficiency of wind and solar power within the Greek electricity system, utilizing hourly dispatch data from August 2012 to December 2018—a period characterizing the grid’s “pre-saturation” technical potential. By employing an econometric framework to capture ex-post displacement dynamics, we identify a statistically significant but highly heterogeneous abatement impact across renewable technologies. Our analysis reveals that wind power consistently achieves higher carbon savings per MWh than solar photovoltaics, primarily by driving deeper displacement of carbon-intensive thermal baseload. Conversely, solar generation exhibits a stronger propensity to displace zero-carbon hydroelectric output and net imports, thereby dampening its domestic abatement efficiency. Furthermore, we demonstrate that the marginal emissions avoided are non-linear, fluctuating significantly with system load, interconnection flows, and renewable penetration levels. These findings establish an “unconstrained efficiency” benchmark for the Greek grid, providing the necessary counterfactual to evaluate the diminishing returns and curtailment penalties characterizing the high-penetration era of renewables.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.3390/en19081971first seen 2026-05-05 08:02:59 · last seen 2026-05-05 19:14:30
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