バッテリー対水素エネルギー貯蔵を備えたオフグリッドハイブリッド再生可能エネルギーシステムの最適化と政策ベースの技術・経済・環境分析：チャド・ファルチャナにおける太陽光/風力タービンシステムのケーススタディ
Optimisation and Policy-Based Techno-Econo-Environmental Analysis of Off-Grid Hybrid Renewable Energy Systems with Battery vs. Hydrogen Energy Storage Options: Case Study of a Photovoltaic/Wind-Turbine System in Farchana, Chad (原題)
Idriss IAk, Yimen N
🤖 gxceed AI 要約
日本語
チャド東部の村落電化を対象に、PV/風力ハイブリッドシステムをバッテリー型と水素型で最適化し、HOMERと政策経済分析を組み合わせて評価した。バッテリー型はCOE 0.334 USD/kWh、水素型は0.4812 USD/kWhで、再生可能エネルギープレミアムタリフ（RPT）の必要水準は貯蔵方式で大きく異なる。貯蔵技術別のタリフ設計の重要性を示し、SDG7達成に貢献する。
English
This study optimises off-grid PV/wind hybrid systems with battery vs. hydrogen storage for rural electrification in Farchana, Chad, using HOMER and a policy-based economic analysis. Battery storage yields a COE of USD 0.334/kWh versus USD 0.4812/kWh for hydrogen. Required Renewable Energy Premium Tariff rates differ substantially by storage type, highlighting the need for storage-differentiated tariff design to support SDG 7.
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
日本企業のGX戦略とは直接の接点は薄いが、水素貯蔵のコスト比較やプレミアムタリフ設計は、日本の水素政策・海外インフラ輸出・JCM案件形成の参考になる。
In the global GX context
This adds empirical evidence on storage-differentiated renewable support tariffs in sub-Saharan Africa, relevant to global debates on transition finance and just energy transition. It offers a comparative techno-economic benchmark for hydrogen vs. battery storage in off-grid contexts.
👥 読者別の含意
🔬研究者:オフグリッドHRESの最適化と政策支援設計に関する定量比較手法を提供する。
🏢実務担当者:水素貯蔵とバッテリー貯蔵のコスト差を踏まえたミニグリッド事業の投資判断に有用。
🏛政策担当者:貯蔵方式別にタリフ水準を差別化する政策設計の必要性を示唆する。
📄 Abstract（原文）
Hybrid renewable energy systems (HRES) have recently emerged as promising solutions to address the limitations of single-source renewable energy systems for rural electrification in sub-Saharan Africa. However, the cost of energy (COE) for these systems remains prohibitively high for rural populations, limiting the viability of HRES projects for independent power producers (IPPs). This study presents an integrated two-step framework. The first phase utilises HOMER software to optimise a photovoltaic/wind turbine (PV/WT) system combined with either battery or hydrogen fuel cell energy storage. The second phase involves a policy-based economic analysis that evaluates the impact of the Renewable Energy Premium Tariff (RPT) support scheme, under two annual debt interest rate scenarios (15% and 5%), on the economic viability of each optimised system, integrated into a hypothetical mini-grid designed to electrify Facharna, a village in Eastern Chad. The optimal system architecture consists of a 234-kW PV array, five wind turbines, and 400 batteries, resulting in a COE of USD 0.334/kWh for the battery-based system. Alternatively, a 392-kW PV array, ten wind turbines, a 600-kg hydrogen tank, a 250-kW electrolyser, and a 250-kW fuel cell yield a COE of USD 0.4812/kWh for the hydrogen-based system. The policy-based techno-economic analysis indicates that RPT rates of 0.576 and 0.431 USD/kWh are required for the battery-based system to be viable under 15% and 5% debt interest rate scenarios, respectively. In contrast, the hydrogen-based system requires 0.783 and 0.604 USD/kWh under the same conditions. These findings underscore the importance of incorporating energy-storage-system-based differentiation in RPT scheme design and are expected to contribute to a sustainable electricity supply in rural areas of sub-Saharan Africa (SSA) and support the achievement of Sustainable Development Goal (SDG) 7.
🔗 Provenance — このレコードを発見したソース
- Research Square https://doi.org/10.20944/preprints202609.1699.v1first seen 2026-09-23 04:36:27 · last seen 2026-09-28 04:39:37
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