“We are powered by 100% renewable energy.” – The impact of temporal and spatial matching in voluntary green electricity markets
「私たちは100%再生可能エネルギーで稼働しています」―自主的グリーン電力市場における時間的・空間的マッチングの影響 (AI 翻訳)
Lissy Langer
🤖 gxceed AI 要約
日本語
本論文は、GHGプロトコルのスコープ2排出算定方法の改定案（同一時間帯・同一競争ゾーン内でのREC購入義務化）が、市場に与える影響を欧州の実データを用いて分析。国や時間帯、季節によって影響が大きく異なり、一部の国では貯蔵で対応可能だが、他国では容量不足や価格上昇が生じる可能性を示す。
English
This study empirically analyzes the impact of the proposed GHG Protocol revision requiring temporal and spatial matching for RECs in scope 2 accounting, using open European data. It finds that the effect varies by country, time of day, and season; some countries can meet demand with storage, while others face capacity shortages or higher prices.
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
日本の有報やSSBJでもスコープ2排出量の開示は重要課題。GHGプロトコルの改定は、国内の再エネ証書（非化石証書、J-クレジット）の運用にも影響を与える可能性があり、日本企業の調達戦略見直しの示唆となる。
In the global GX context
The GHG Protocol revision is a key global development for corporate climate disclosure (ISSB, SEC). This paper provides empirical evidence on the feasibility of hourly matching, which directly informs the ongoing standard-setting process and corporate renewable procurement strategies.
👥 読者別の含意
🔬研究者:Provides empirical evidence on the market impact of temporal and spatial matching, contributing to the debate on scope 2 accounting reform.
🏢実務担当者:Helps corporate sustainability teams anticipate changes in REC procurement costs and availability under the proposed GHG Protocol revision.
🏛政策担当者:Offers data-driven insights for regulators considering stricter scope 2 requirements, showing country-specific feasibility and risks.
📄 Abstract（原文）
The GHG Protocol establishes the global standard for measuring and reporting corporate scope 2 emissions, mainly from electricity consumption. The current accounting methodology allows companies to purchase renewable energy certificates (RECs) from another country to match their electricity consumption within the same year, allowing them to claim to be powered 100% renewable. However, under a currently proposed revision, companies will have to purchase RECs from the same bidding zone in the same hour of their consumption to make this claim. The intention is that sufficient demand for certificates will lead to an increase in the supply of clean energy. Given the current supply, would there be a shortage of certificates due to additional temporal and spatial matching, or are there sufficient RECs on the market? This study uses open-access data on past European REC sales and renewable energy production to empirically analyse the impact of these measures. We show that the impact greatly depends on country, time of day, and season. Although some countries might be able to meet the GO demand with storage, others require higher capacity or will face higher prices.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.1109/eem68581.2026.11589683first seen 2026-07-24 06:42:51
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