Reducing Power System Costs in LMICs through Grid-Connected Green Hydrogen: Evidence from Kenya.
送電網に接続されたグリーン水素による低・中所得国の電力システムコスト低減：ケニアからのエビデンス (AI 翻訳)
Xi Xi, Boniface Kinyanjui, D. Kammen
🤖 gxceed AI 要約
日本語
本研究は、ケニアを対象に系統接続された水素電解槽の効果を評価。柔軟な需要として機能する電解槽が再生可能エネルギーの出力抑制を低減し、系統全体の電力コストを17%以上削減、2050年までに累積1億3500万ドルのコスト削減を達成することを示す。空間分析ではインフラ投資の集中を明らかにし、公平性を考慮した計画の必要性を強調。調整された系統計画がグリーン水素の経済性と低炭素化に不可欠と結論。
English
This study evaluates grid-connected green hydrogen electrolyzers in Kenya using a multinodal capacity expansion model. Electrolyzers acting as flexible demand reduce renewable curtailment, enable greater wind integration, and lower system-wide electricity costs by over 17%, achieving cumulative savings of $135 million by 2050 while producing cost-competitive hydrogen. Spatial results reveal concentrated infrastructure investment, highlighting the need for equity-oriented planning. Coordinated planning of electrolyzers, wind, and transmission is critical for cost reductions and low-carbon hydrogen.
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
ケニアの事例ではあるが、系統連系型水素電解槽のコスト低減効果と公平性の課題は、日本の水素戦略や電力系統計画にも示唆を与える。特に、再生可能エネルギー導入拡大と水素の役割を検討する際の参考となる。
In the global GX context
This paper provides empirical evidence from an LMIC context showing that grid-connected hydrogen electrolyzers can reduce system costs and support renewable integration. It contributes to global discourse on green hydrogen economics, equity, and infrastructure planning, relevant to countries exploring hydrogen in power systems.
👥 読者別の含意
🔬研究者:This paper offers a detailed modeling framework for grid-connected hydrogen in an LMIC setting, useful for energy system modelers and hydrogen researchers.
🏢実務担当者:Energy planners in LMICs can use these insights for integrated hydrogen and power system design to optimize costs and reduce curtailment.
🏛政策担当者:Policymakers should note the systemic cost benefits of coordinating hydrogen with grid planning and address equity concerns in infrastructure investment.
📄 Abstract（原文）
Green hydrogen could support decarbonization and industrial development in low- and middle-income countries (LMICs), but high electricity costs and export-oriented project designs raise concerns about economic viability and equity. We evaluate the role of grid-connected hydrogen electrolyzers in Kenya using a multinodal capacity expansion model with county-level spatial resolution. By acting as flexible demand, electrolyzers reduce renewable curtailment, enable greater wind integration, and lower system-wide electricity costs. Across representative scenarios, electrolyzer deployment reduces levelized cost of electricity by more than 17% and yields over $135 million in cumulative system cost savings by 2050 while producing hydrogen that is at least as cost-competitive as standalone projects. Spatial results reveal concentrated infrastructure investment, highlighting the need for equity-oriented planning. We find that coordinated planning of electrolyzers, wind, and transmission is critical for achieving both cost reductions and low-carbon hydrogen. These results suggest that grid-integrated hydrogen, when embedded in power system planning, can support certification, reduce electricity costs, and generate broader domestic economic benefits. In this sense, grid-connected electrolyzers can enable green hydrogen not only in Kenya, but for Kenya.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.1021/acs.est.5c09802first seen 2026-05-15 19:20:47
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