The Green Trilemma of Banks and its Potential Solution: The Green Preferential Capital Requirements
銀行のグリーントライレンマとその解決策：グリーン優遇的資本規制 (AI 翻訳)
A. Bethlendi, Norbert Holczinger
🤖 gxceed AI 要約
日本語
本論文は、銀行の安全性、収益性、環境配慮の3つの目標間のトレードオフである「グリーントライレンマ」を定式化し、グリーン融資を促進するための優遇的資本規制を提案する。ハンガリー中央銀行のGreen Preferential Capital Requirement Program（GPCRP）を評価し、単位コストがEU ETS価格を下回り、プルーデンシャルリスクを増加させずに炭素排出削減に寄与することを実証した。
English
This paper formalizes the green trilemma of banks balancing safety, income, and green goals, proposing green differentiated capital requirements. It evaluates Hungary's Green Preferential Capital Requirement Program (GPCRP), a pioneering green supporting factor. Results show cost efficiency, with unit costs below EU ETS prices, and significant carbon emission reductions without materially increasing prudential risk.
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、銀行のグリーン融資促進策として差別的な資本規制はまだ導入されていない。本論文のハンガリー事例は、日本の金融規制当局や銀行にとって示唆に富む。特に、SSBJや気候変動対応の文脈で、銀行のポートフォリオのグリーン化を進めるための政策手段として参考になる。
In the global GX context
In the global context, this paper provides empirical evidence for a green supporting factor in banking regulation, an often-discussed but rarely implemented policy tool. It contributes to the debate on transition finance and how prudential regulation can align with climate goals, relevant for Basel Committee discussions and central banks.
👥 読者別の含意
🔬研究者:Researchers in sustainable finance and central banking can use the formal model and empirical methodology to evaluate similar programs.
🏢実務担当者:Corporate sustainability teams can understand how bank capital requirements might influence lending terms for green projects.
🏛政策担当者:Regulators and central banks can consider the cost-effectiveness of green differentiated capital requirements as a policy instrument.
📄 Abstract（原文）
Abstract The traditional trade-off between banks’ safety and income should be amended with a green factor creating the green trilemma. Banks must find the balance between the three mentioned goals. Firstly, we build up a formal model of the green trilemma and point out the need for incentives to support green lending. The introduction of green differentiated capital requirements can be a solution. However, there is little empirical experience about the application of this policy tool. Secondly, we assess the Green Preferential Capital Requirement Program (GPCRP) of the Central Bank of Hungary, which is a pioneer green supporting factor program. We measure the cost efficiency of this program. The cost is prudential, meaning that the benefit of prudential release is distributed between bank owners and green borrowers. The program’s unit cost is much below the current EU ETS prices. Our results underline the effectiveness of the program: without material increase in prudential risk, the GPCRP contributes to avoiding significant amounts of carbon emission.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.2478/jcbtp-2026-0009first seen 2026-05-15 17:38:01
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