アジアにおける企業再生可能エネルギー基準の排出影響
Emissions Impacts of Different Corporate Renewable Energy Standards in Asia (原題)
Nat Steinsultz, Gavin McCormick
🤖 gxceed AI 要約
日本語
GHGPのScope 2ガイダンス改定を背景に、年間量マッチング・時間別マッチング・帰結的排出マッチングの3手法をアジア13カ国で2025〜2035年に比較。同じコストで帰結的排出最適化ポートフォリオは年間・時間別マッチングより1.8〜3.1倍多くの世界排出削減を達成できる。排出削減は高排出グリッドへの投資優先で最大化され、最小コスト容量拡張モデルと履歴データ由来の限界排出率が整合することを示す。
English
Compares annual, hourly (24/7), and consequential emissions matching for corporate renewable procurement across 13 Asian countries (2025–2035) using Transition Zero's capacity expansion modeling. A consequential emissions-optimized portfolio cuts 1.8–3.1× more global emissions than annual or hourly matching at the same cost by prioritizing higher-emission grids. Least-cost capacity expansion model results align with a consequential marginal build emissions rate derived from historical data.
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
GHGPのScope 2改定議論が進む中、日本企業がアジアで再エネ調達を拡大する際の会計基準選択に直接影響する。SSBJや有報でのScope 2開示の考え方、および投資家向けの削減貢献の説明根拠として重要。
In the global GX context
Directly informs the GHGP Scope 2 revision debate by showing that consequential matching can deliver greater global emissions impact than hourly or annual matching in Asian grids. Adds Asian empirical evidence to a literature dominated by US/EU studies, relevant to ISSB/CSRD Scope 2 disclosure and transition finance allocation.
👥 読者別の含意
🔬研究者:Provides a systematic cross-country comparison of procurement standards and validates a marginal build emissions rate against capacity expansion models.
🏢実務担当者:Guides corporate buyers in Asia on how choosing consequential matching can maximize emissions impact per dollar and support credible Scope 2 claims.
🏛政策担当者:Highlights that accounting rules shape where corporate renewable investment flows, informing GHGP and national policy design.
📄 Abstract（原文）
Voluntary corporate renewable energy procurement is a critical driver of global grid decarbonization, and the choices made by purchasers are heavily influenced by the accounting standards used to define emissions claims. As the Greenhouse Gas Protocol (GHGP) revises its Scope 2 Guidance, three primary strategies have emerged: annual volume matching, hourly matching (24/7), and consequential emissions matching. While previous research has evaluated these strategies in the United States and Europe, there is a significant research gap regarding their impact in rapidly developing Asian markets. This study provides a systematic comparison of these three strategies across 13 Asian countries-including India, Indonesia, Vietnam, and Thailand-from 2025 to 2035. Using Transition Zero's Scenario Builder tool for capacity expansion modeling, we evaluate the cost-effectiveness and total emissions reductions of each strategy. We find that a consequential emissions optimized portfolio can reduce 1.8-3.1 times more global emissions than annual or hourly matched portfolios for the same cost by prioritizing investment toward higher emission grids in the region. These findings suggest that a consequential approach to voluntary procurement can increase global impact over locational and temporal matching. We also find good alignment between emissions changes predicted by least-cost capacity expansion models and a consequential marginal build emissions rate calculated from historical data.
🔗 Provenance — このレコードを発見したソース
- openaire https://doi.org/10.2139/ssrn.7226199first seen 2026-11-05 04:24:08 · last seen 2026-11-06 04:23:08
🔔 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。