Geospatial life cycle greenhouse gas emissions of coal electricity in the United States
米国における石炭火力発電の地理空間ライフサイクル温室効果ガス排出量 (AI 翻訳)
Marie-Odile Payne Fortier, Amir Sharafi, Alyssa Rose Pfadt-Trilling, Sierra J Lema, Christy Duong, Sonia Ronquillo Perez, Ravinderjit Sidhu, Stephanie Orozco, Vasco Ramirez
🤖 gxceed AI 要約
日本語
米国の石炭火力発電所ごとのライフサイクルGHG排出量を評価。採掘、輸送、燃焼、廃棄物管理などを含む。EPAとEIAのデータを用い、平均排出量は約1170gCO2eq/kWh。非CO2排出は再生可能エネルギーの全ライフサイクル排出を上回る可能性があり、CCS付き石炭でも再生可能エネルギー並みの低排出にはならないことを示唆。
English
This study provides an updated life cycle GHG emission benchmark for US coal-fired power plants, incorporating mining, transport, combustion, and waste management. Using EPA and EIA data, average emissions are around 1170 g CO2eq/kWh. Non-CO2 emissions alone can exceed the life cycle emissions of renewables, suggesting that coal with CCS may not achieve renewable-level low emissions.
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
米国石炭火力の最新LCAデータは、日本の石炭火力排出係数見直しや、CCS導入効果の現実的な評価に参考となる。また、ライフサイクル思考の重要性を示し、日本のGHGインベントリ改善に示唆を与える。
In the global GX context
This paper updates the life cycle emission factors for US coal electricity, challenging assumptions about CCS effectiveness. It reinforces the need for full life cycle accounting in global climate policy and can inform ISO-compliant LCAs and emission inventories worldwide.
👥 読者別の含意
🔬研究者:Provides updated life cycle emission factors and methodology for coal electricity, useful for LCA and energy system modeling.
🏢実務担当者:Offers benchmark emission factors for corporate GHG inventories and carbon footprinting, especially for US-based operations.
🏛政策担当者:Highlights that non-CO2 emissions from coal life cycle can be significant, informing policies on CCS and renewable energy targets.
📄 Abstract（原文）
Abstract Coal-fired electricity generates significant direct combustion emissions, but the full life cycle greenhouse gas (GHG) emissions are less understood in the United States under current conditions. This analysis presents an updated benchmark to the life cycle GHG emissions of coal-fired electricity by coal power plant in the US. The analysis includes the impacts of mining and coal delivery; direct land use change from surface mining and power plant-associated infrastructure; power plant infrastructure construction; direct combustion emissions of CO2, N2O, and CH4; sulfur removal; and coal combustion residuals management, expressed as CO2 equivalents. Carbon dioxide emissions data was obtained from both the US Environmental Protection Agency (EPA) and the Energy Information Administration (EIA), yielding two results for each facility. Using data from the EPA, the emissions of coal-fired electricity ranges from 910 to 1724 g CO2eq/kWh, with an average of 1175 g CO2eq/kWh. With EIA data, results range from 962 to 1690 and an average of 1163 g CO2eq/kWh. The life cycle GHG emissions results are higher than the current benchmark from harmonization of the coal life cycle assessment (LCA) literature. The direct CO2 emissions from combustion comprised 91% of the total impact on average, but other emissions contributed 4 to 28% to the total, with a range from 45.9 to 478 g CO2eq/kWh. The non-CO2 emissions alone are higher than the life cycle GHG emissions of renewables, indicating the importance of quantifying emissions from the other stages of the coal life cycle. This also suggests that electricity from coal with carbon capture would not necessarily reach the low emissions of renewables on a life cycle basis. These updated life cycle GHG emissions values can be used in GHG inventories and policymaking as well as in future LCAs that involve energy from coal in the US.
🔗 Provenance — このレコードを発見したソース
- crossref https://doi.org/10.1088/2634-4505/ae6e6bfirst seen 2026-05-16 04:34:23 · last seen 2026-05-16 04:38:20
🔔 こうした論文の新着を逃したくない方は キーワードアラート に登録（無料・3キーワードまで）。
gxceed は公開メタデータに基づく研究支援データセットです。要約・翻訳・解説は AI 支援で生成されています。 最終的な解釈・検証は利用者が原典資料に基づいて行うことを前提とします。