article · Results in Engineering
Transitioning away from fossil fuels requires energy storage systems capable of addressing the intermittent nature of renewable energy, maintaining grid stability, and balancing supply with demand. A quantitative evaluation of mechanical, electrical, electrochemical, thermal, and chemical storage systems assesses their energy density, scalability, round-trip efficiency, operational lifespan, and compatibility with renewable power sources. Across the evaluated technologies, hydrogen storage achieved the highest overall score of 24.0, while lithium-ion batteries and fuel cells each recorded scores of 23.0. These results highlight their strong potential for large-scale renewable energy integration and practical adoption. The analysis also reviews underlying working principles, advantages, and operational limitations, while addressing persistent sector hurdles such as high capital costs, efficiency losses, and infrastructure requirements, alongside potential solutions to support long-term sustainability goals.
Renewable power sources such as solar and wind do not generate electricity constantly, making reliable storage essential for stable power grids. Evaluating storage mechanisms against metrics like lifespan, efficiency, and scale helps planners identify which technologies can best support grid stability and accelerate the transition away from fossil fuels.
This comparative assessment serves grid operators, energy project developers, and system planners selecting storage solutions for renewable energy integration. The evaluation highlights hydrogen, fuel cells, and lithium-ion batteries as leading candidates for near-market and applied utility-scale adoption, while noting that addressing infrastructure requirements and lowering high upfront costs remain essential steps for widespread commercial deployment.
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• Explores the necessity of robust energy storage systems (ESS) for mitigating intermittency issues in renewable energy sources. • Discusses the working principles, fundamental mechanisms, advantages, and limitations of different ESS types. • Identifies major barriers like high costs, efficiency constraints, and infrastructure requirements while proposing potential solutions. • Assesses energy density, scalability, efficiency, longevity, and compatibility with renewable energy integration. • Provides a quantitative evaluation of major ESS technologies, including mechanical, electrical, electrochemical, thermal, and chemical storage. The worldwide energy transition driven by fossil fuel resource depletion and increasing environmental concerns require the establishment of strong energy storage systems to mitigate the intermittency issues of renewable energy sources. ESS technologies are crucial in maintaining grid stability supply-demand balance and supporting energy demand. This review offers a quantitative comparison of major ESS technologies mechanical electrical electrochemical thermal and chemical storage systems assessing them for energy density, scalability, efficiency, longevity and integration compatibility with renewable energy systems. Among the technologies assessed, hydrogen storage achieved the highest overall score of 24.0, followed by lithium-ion batteries and fuel cells, each scoring 23.0, highlighting their strong potential for renewable energy integration, providing a structured evaluation that enables easy comparison among storage technologies and also aiding in the identification of the most sustainable and practically viable solutions. The review further explores the working principles, advantages, and limitations of each ESS type, supported by recent innovations and emerging trends. Key challenges such as high costs, efficiency limitations, and infrastructure requirements are also addressed with potential mitigation strategies. By consolidating current research and providing a comprehensive, comparative analysis, this paper underscores the pivotal role of ESS in enhancing grid stability, enabling large-scale renewable energy adoption, and achieving long-term sustainability goals.
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DOI: 10.1016/j.rineng.2025.105589
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