ケニアの小学校における手頃なエネルギーアクセスのためのセカンドライフバッテリーシステム
Second-life battery systems for affordable energy access in Kenyan primary schools (原題)
Kebir, Nisrine, Leonard, Alycia, Downey, Michael, Jones, Bernie, Rabie, Khaled, Bhagavathy, Sivapriya Mothilal, Hirmer, Stephanie A.
🤖 gxceed AI 要約
日本語
本研究は、ケニアの小学校における太陽光発電とセカンドライフバッテリーの技術経済的実現可能性を評価した。48のシステムシナリオをシミュレーションし、セカンドライフバッテリーは新バッテリーと比較して電力コストを5.6〜35.3%削減し、回収期間も8.2〜42.9%短縮することを示した。廃棄物削減とコスト競争力の両立が可能である。
English
This study evaluates the techno-economic feasibility of solar PV with second-life batteries for Kenyan primary schools. Simulating 48 system scenarios, it finds that second-life batteries reduce levelized cost of electricity by 5.6-35.3% and payback periods by 8.2-42.9% compared to new batteries, offering both cost savings and waste reduction.
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、再生可能エネルギー導入拡大に伴う蓄電池需要増加が課題であり、リユース・リサイクル技術の重要性が高まっている。本研究成果は、日本の蓄電池リユース産業の海外展開や、途上国向けエネルギーアクセス事業のモデルとして参考になる。
In the global GX context
This paper contributes to global discussions on circular economy and energy access, demonstrating that second-life batteries can be cost-competitive in off-grid settings. It provides empirical evidence for scaling battery reuse in developing regions, aligning with SDG7 and climate goals.
👥 読者別の含意
🔬研究者:Provides a robust techno-economic framework for evaluating second-life battery systems in off-grid contexts.
🏢実務担当者:Offers cost and performance benchmarks for deploying second-life batteries in school electrification projects.
🏛政策担当者:Highlights the potential of second-life batteries to enhance energy access and reduce waste, informing policy on battery circular economy.
📄 Abstract（原文）
As the world transitions to net zero, energy storage is becoming increasingly important for applications such as electric vehicles, mini-grids, and utility-scale grid stability. The growing demand for storage will constrain raw battery materials, reduce the availability of new batteries, and increase the rate of battery retirement. As retired batteries are difficult to recycle into components, to avoid huge amounts of battery waste, reuse and repurposing options are needed. In this research, we explore the feasibility of using second-life batteries (which have been retired from their first intended life) and solar photovoltaics to provide affordable energy access to primary schools in Kenya. Based on interviews with 12 East African schools, realistic system sizes were determined with varying solar photovoltaic sizes (5–10 kW in 2.5 kW increments) and lithium-ion battery capacities (5–20 kWh in 5 kWh increments). Each combination was simulated under four scenarios as a sensitivity analysis of battery transportation costs (i.e., whether they are sourced locally or imported). A techno-economic analysis is undertaken to compare new and second-life batteries in the resulting 48 system scenarios in terms of cost and performance. We find that second-life batteries decrease the levelized cost of electricity by 5.6–35.3% in 97.2% of scenarios compared to similar systems with new batteries, and by 41.9–64.5% compared to the cost of the same energy service provided by the utility grid. The systems with the smallest levelized cost of electricity (i.e., 0.11 USD/kWh) use either 7.5 kW or 10 kW of solar with 20 kWh of storage. Across all cases, the payback period is decreased by 8.2–42.9% using second-life batteries compared to new batteries; the system with the smallest payback period (i.e., 2.9 years) uses 5 kW solar and 5 kWh storage. These results show second-life batteries to be viable and cost-competitive compared to new batteries for school electrification in Kenya, providing the same benefits while reducing waste.
🔗 Provenance — このレコードを発見したソース
- base https://strathprints.strath.ac.uk/83949/first seen 2026-09-01 12:00:11
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