Reducing Energy Storage Requirements in Renewable Mini-grids through Hybridization
ハイブリッド化による再生可能エネルギーミニグリッドのエネルギー貯蔵要件の削減 (AI 翻訳)
Amaha AH, Rao AB
🤖 gxceed AI 要約
日本語
本研究は、ハイブリッド再生可能エネルギーシステム（HRES）の構成選択がバッテリー貯蔵要件に与える影響を定量的に評価した。5つの構成を比較し、ハイブリッド化により蓄電容量を250kWhから50kWhに削減、LCOEを56.8%低減できることを実証。新たにBattery Capacity Reduction Index (BCRI)とEmission Reduction Index (ERI)を提案し、クリーン生産の観点から上流のバッテリー材料需要削減にも貢献する。
English
This study quantitatively evaluates how hybridization in renewable mini-grids reduces battery storage requirements. Comparing five configurations, it shows that hybridization can cut storage from 250 kWh to 50 kWh and reduce LCOE by 56.8%. It introduces two indices (BCRI and ERI) for cross-configuration assessment and links configuration choice to reductions in upstream battery material demand.
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
日本の離島や山間部での再生可能エネルギーミニグリッド導入において、蓄電池コストが大きな課題となっている。本論文のハイブリッド化による蓄電容量削減手法は、日本におけるコスト効率的なオフグリッド電化の設計指針として活用できる。
In the global GX context
Globally, battery storage is a key cost driver for off-grid renewable mini-grids, especially in developing countries. This paper provides a systematic framework to reduce storage requirements through hybridization, with transferable indices (BCRI, ERI) that can guide project design and policy planning for sustainable rural electrification.
👥 読者別の含意
🔬研究者:Provides a stepwise hybridization framework and comparative indices (BCRI, ERI) for evaluating mini-grid configurations, useful for further research in off-grid system design.
🏢実務担当者:Offers clear evidence that hybridization reduces battery capacity and LCOE, aiding project developers in selecting cost-effective configurations for rural mini-grids.
🏛政策担当者:Highlights the potential for reducing battery material demand and end-of-life burden, supporting policies that promote hybrid renewable systems for rural electrification.
📄 Abstract（原文）
<title>Abstract</title> <p>Comparative assessment of hybrid renewable energy systems (HRES) is critical for identifying cost-effective and storage-efficient mini-grid configurations. Battery energy storage remains one of the dominant cost and material burdens in off-grid renewable mini-grids, particularly in solar-only systems. This study demonstrates that storage requirements can be substantially reduced through system-level hybridization, shifting the design focus from component sizing to configuration selection. Five configurations are evaluated for a calibrated rural mini-grid (175 kWh/day, 50 kW peak) using HOMER Pro under consistent reliability constraints. Two dimensionless indices are introduced for cross-configuration assessment: the Battery Capacity Reduction Index (BCRI) and Emission Reduction Index (ERI). Progressive hybridization reduced battery storage requirements from 250 to 50~kWh while decreasing LCOE by 56.8%. The optimal hybrid configuration achieved 100% renewable operation with zero direct CO\textsubscript{2} emissions. Sensitivity analysis confirmed robust economic ranking across key techno-economic and resource parameter variations. The study contributes: (i) a stepwise hybridization framework for isolating the structural effect of hybridization on storage demand; (ii) transferable comparative indices for cross-study assessment; and (iii) a cleaner-production perspective linking configuration choice to reductions in upstream battery-material demand and end-of-life burden. The framework supports comparative sustainable energy technology assessment for rural electrification planning.</p>
🔗 Provenance — このレコードを発見したソース
- Research Square https://doi.org/10.21203/rs.3.rs-9818671/v1first seen 2026-06-04 04:26:22
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