Harnessing Solar Water Pumping Technologies for Sustainable Water Supply in Kenya: A Case Study of Kajiado Central Sub-County, Kenya. A Retrospective Baseline Study
ケニアにおける持続可能な水供給のためのソーラー水ポンプ技術の活用：カジアド中央地区の事例研究（遡及的ベースライン調査） (AI 翻訳)
Saad, Okwiri Minado, Khamah, Ali Hassan, Murimi, Michael Kairu
🤖 gxceed AI 要約
日本語
本論文は、ケニア・カジアド中央地区におけるソーラー水ポンプ技術（SWPT）の長期的性能を調査した。ディーゼル比で運営コスト60～75%削減を確認したが、太陽光の限界費用ゼロが過剰揚水を誘発し、帯水層の枯渇とフッ素基準超過の飲料水問題を引き起こすことを指摘。持続可能な導入には制度的ガバナンスと空間的掘削制限が必要と結論。
English
This paper evaluates the long-term performance of solar water pumping technology (SWPT) in Kajiado Central, Kenya. It finds 60-75% operational cost reduction compared to diesel, but notes that zero marginal cost of solar incentivizes over-pumping, accelerating aquifer depletion and distributing untreated water exceeding WHO fluoride limits. The study calls for institutional governance and spatial drilling limits to ensure sustainable deployment.
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
ケニアの事例だが、太陽光ポンプ導入によるコスト削減と地下水管理のジレンマは、日本の島嶼部や災害時用水供給にも示唆を与える。また、日本の国際協力における再生可能エネルギー・水資源統合プロジェクトの評価指標として参考になる。
In the global GX context
This case study provides empirical evidence from an African dryland context, illustrating the trade-off between renewable energy adoption and common-pool resource sustainability. It contributes to global discussions on water-energy nexus governance, relevant for SDG 6 and 7, and offers lessons for climate adaptation projects in water-scarce regions.
👥 読者別の含意
🔬研究者:This study offers a socio-technical systems perspective on the unintended side effects of solar pumping adoption, useful for water-energy nexus research.
🏢実務担当者:Water utilities and development agencies can use the cost-benefit data and governance recommendations to design solar pumping projects with safeguards against over-extraction.
🏛政策担当者:Kenyan county governments and international donors should integrate spatial drilling limits and water quality monitoring into renewable energy water supply programs.
📄 Abstract（原文）
Kajiado County suffers from acute water scarcity caused by climate-driven droughts and surface-water deficits that severely threaten agro-pastoral livelihoods, forcing a reliance on groundwater extraction across unserved zones of Kajiado Central Sub-County. Weak regulatory oversight has led to uncoordinated, dense borehole clustering that causes localized static water tables to drop rapidly, while private water pricing strains household economies and unregulated extraction bypasses public health monitoring for hazardous geogenic fluoride. This study implements a comparative ex-post facto retrospective research design spanning a 10-year operational horizon (2015–2025) to evaluate the long-term performance of resource-efficient Solar Water Pumping Technology (SWPT) as an alternative to conventional diesel and grid regimes. Synthesizing Common-Pool Resource (CPR) and Socio-Technical Systems (STS) theories, the study relies entirely on archival secondary data sourced from the Kajiado County Ministry of Water, the Water Resources Authority (WRA), and public health registries, evaluated via statistical trend tracking and thematic analysis. The empirical findings reveal that while transitioning to solar water pumping lowers operational costs by 60%–75% compared to diesel, the zero-marginal cost of solar power creates an economic incentive for unrestricted over-pumping that accelerates aquifer drawdown, while the clean energy transition exhibits a major health compliance gap by routinely distributing untreated water that exceeds the WHO 1.5 mg/L fluoride threshold. Technical upscaling must be legally bound to institutional governance; this study provides an empirical baseline for the Kajiado County Government to enforce spatial drilling limits, embed solarized frameworks into t
🔗 Provenance — このレコードを発見したソース
- Zenodo https://zenodo.org/records/21097406first seen 2026-07-02 04:15:35 · last seen 2026-07-03 04:15:50
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