資本コストの高さが世界の再生可能エネルギー導入の緩和効果を左右する
High costs of capital shape the mitigation effects of renewable energy deployment globally (原題)
Luke Hatton, Gbemi Oluleye, Malte Jansen, Iain Staffell, Adam Hawkes
🤖 gxceed AI 要約
日本語
低・中所得国（LMICs）では資本コストが高く、再生可能エネルギーの導入障壁となっている。本研究は、LMICsでの再生可能エネルギー導入が高所得国よりプロジェクト当たり20倍以上の排出削減効果を持つ一方、資本コストがLCOEを大幅に引き上げ、世界の再生可能エネルギーの潜在力の大部分を制限していることを示す。2030年の再エネ3倍目標達成には、追加年間コストが米ドルで数千億ドルに上る。
English
High capital costs hinder renewables in low- and middle-income countries (LMICs), despite high mitigation potential. This study shows that renewable projects in LMICs can mitigate over 20 times more emissions per project than in high-income countries, but financing costs raise LCOEs by US$26/MWh (solar) and US$24/MWh (wind), accounting for up to 78% of LCOE. Achieving the 2030 tripling target would require additional annual costs of US$245bn (solar) and US$329bn (wind), underscoring the need to reduce financing costs for an equitable transition.
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GX政策では、途上国へのインフラ輸出やJCM（二国間クレジット制度）を通じた再エネ導入支援が重要であり、本研究成果は資金調達コストの低減が途上国での排出削減効果を高めることを示し、日本の国際協力や民間投資の方向性に示唆を与える。
In the global GX context
Globally, this paper provides quantitative evidence that high financing costs in LMICs are a major barrier to renewable deployment, limiting global mitigation potential. It supports international efforts to lower capital costs through climate finance, multilateral development banks, and policy interventions, aligning with the goals of the Paris Agreement and the global tripling of renewables by 2030.
👥 読者別の含意
🔬研究者:Provides empirical evidence on the impact of capital costs on renewable LCOE and mitigation potential, useful for energy transition modeling and climate finance research.
🏢実務担当者:Highlights the importance of financing terms in renewable project viability, informing investment decisions and project development in emerging markets.
🏛政策担当者:Underlines the need for policies to reduce financing costs in LMICs to unlock renewable potential and achieve global climate targets.
📄 Abstract（原文）
Abstract High costs of capital are a major barrier to renewables deployment in low- and middle-income countries (LMICs), impeding decarbonisation efforts despite strong renewable resources. Using grid carbon intensity trajectories, we show that renewable deployment in LMICs has mitigation potentials over 20 times larger per project than high-income countries, even before accounting for planned fossil projects. High costs of capital increase renewable levelised costs of electricity (LCOEs) in LMICs substantially, adding an average of US$26/MWh (solar) and US$24/MWh (onshore wind) relative to high-income financing terms. Financing costs account for up to 78% of the LCOE in LMICs, compared with 37-39% in high-income countries, restricting a large portion of global renewable potential. Under a scenario consistent with the target of tripling global renewable capacity by 2030, this corresponds to additional annual costs of US$245bn (solar) and US$329bn (wind). Our results highlight the importance of reducing financing costs in LMICs for a more equitable and efficient energy transition.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1038/s41467-026-75666-6first seen 2026-09-03 05:02:28
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