Off‐Grid Renewable Hydrogen Systems in Australia: A Multi‐Regional Techno‐Economic and Environmental Evaluations
オフグリッド再生可能水素システムの豪州における複数地域の技術経済および環境評価 (AI 翻訳)
T. K. Roy, Sajeeb Saha, Md. Apel Mahmud
🤖 gxceed AI 要約
日本語
本研究は、オフグリッド再生可能水素製造システムの信頼性制約付き技術経済・環境評価フレームワークを開発し、豪州12地域に適用した。Pilbaraでは水素製造コスト2.92ドル/kg、内部収益率7.08%を達成し、ライフサイクル排出量は従来のグレー水素比で最大95%削減可能であることを示した。感度分析では、電解槽コストと太陽光設備利用率が経済性の主要因と特定された。
English
This study develops a reliability-constrained techno-economic and environmental evaluation framework for off-grid renewable hydrogen production and applies it to twelve Australian regions. Pilbara achieves the lowest levelized cost of hydrogen at $2.92/kg and highest IRR of 7.08%, with lifecycle emissions reductions up to 95% versus grey hydrogen. Sensitivity analysis identifies electrolyser capital cost and solar capacity factor as key economic drivers.
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
本論文は、日本の離島や遠隔地での再エネ水素導入評価に応用可能なフレームワークを提供する。豪州のデータではあるが、地域間比較手法は日本の水素戦略（水素基本戦略等）の投資判断にも示唆を与える。
In the global GX context
This paper provides a comparative framework for evaluating off-grid renewable hydrogen systems, relevant for global hydrogen deployment decisions. It demonstrates strong regional variability in cost and emissions, offering insights for policymakers and investors prioritizing low-carbon hydrogen in remote areas.
👥 読者別の含意
🔬研究者:The cross-regional comparison framework and sensitivity analysis methodology can be adopted for hydrogen techno-economic studies in other geographies.
🏢実務担当者:Investors can use the LCOH and IRR benchmarks to identify cost-effective locations for off-grid green hydrogen projects.
🏛政策担当者:The 95% emission reduction potential and cost drivers highlight supportive policies needed for electrolyser cost reduction and renewable capacity expansion.
📄 Abstract（原文）
Green hydrogen (H 2 ), produced from standalone hybrid renewable energy systems, is increasingly recognized as a sustainable substitute for diesel in remote regions. Despite substantial progress, most existing studies are limited to site‐specific analyses and lack systematic regional comparison, making it difficult to generalize techno‐economic and environmental outcomes. To address this gap, this work develops a reliability‐constrained techno‐economic and environmental evaluation framework for off‐grid renewable hydrogen production and applies it to twelve representative regions across Australia using hourly time‐series simulations over a full annual horizon. The proposed framework integrates solar photovoltaic generation, wind energy, lithium‐ion battery storage, proton‐exchange‐membrane electrolysers, hydrogen storage tanks and power conversion units within a unified modelling structure. System performance is assessed using standardized indicators, including levelized cost of hydrogen (LCOH), net present cost, internal rate of return (IRR) and lifecycle emissions. The results reveal strong regional variability driven primarily by renewable resource quality and hydrogen demand scale. Among the assessed regions, Pilbara achieves the lowest LCOH of $2.92/kg and the highest IRR of 7.08%. From an environmental perspective, renewable hydrogen systems reduce lifecycle emissions by up to 95% compared with conventional grey hydrogen pathways. Sensitivity analysis further identifies electrolyser capital cost and solar capacity factor as the dominant drivers of economic competitiveness. Overall, the proposed framework enables transparent cross‐regional comparison of off‐grid renewable hydrogen systems and provides decision‐relevant insights for policymakers and investors to prioritize cost‐effective, low‐carbon hydrogen deployment in remote applications.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.1049/rpg2.70240first seen 2026-05-15 19:47:31
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