Sustainable Power Generation Expansion in Island Systems with Extensive RES and Energy Storage

IF 2.1 Q2 ENGINEERING, MULTIDISCIPLINARY
Emmanuel Karapidakis, Christos Kalogerakis, Evangelos Pompodakis
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Abstract

Insular networks constitute ideal fields for investment in renewables and storage due to their excellent wind and solar potential, as well the high generation cost of thermal generators in such networks. Nevertheless, in order to ensure the stability of insular networks, network operators impose strict restrictions on the expansion of renewables. Storage systems render ideal solutions for overcoming the aforementioned restrictions, unlocking additional renewable capacity. Among storage technologies, hybrid battery-hydrogen demonstrates beneficial characteristics thanks to the complementary features that battery and hydrogen exhibit regarding efficiency, self-discharge, cost, etc. This paper investigates the economic feasibility of a private investment in renewables and hybrid hydrogen-battery storage, realized on the interconnected island of Crete, Greece. Specifically, an optimization formulation is proposed to optimize the capacity of renewables and hybrid battery-hydrogen storage in order to maximize the profit of investment, while simultaneously reaching a minimum renewable penetration of 80%, in accordance with Greek decarbonization goals. The numerical results presented in this study demonstrate that hybrid hydrogen-battery storage can significantly reduce electricity production costs in Crete, potentially reaching as low as 64 EUR/MWh. From an investor’s perspective, even with moderate compensation tariffs, the energy transition remains profitable due to Crete’s abundant wind and solar resources. For instance, with a 40% subsidy and an 80 EUR/MWh compensation tariff, the net present value can reach EUR 400 million. Furthermore, the projected cost reductions for electrolyzers and fuel cells by 2030 are expected to enhance the profitability of hybrid renewable-battery-hydrogen projects. In summary, this research underscores the sustainable and economically favorable prospects of hybrid hydrogen-battery storage systems in facilitating Crete’s energy transition, with promising implications for investors and the wider renewable energy sector.
具有广泛可再生能源和储能的岛屿系统的可持续发电扩展
岛屿电网是可再生能源和储能投资的理想领域,因为它们具有出色的风能和太阳能潜力,而且在这种网络中,火力发电机的发电成本很高。然而,为了保证孤岛网的稳定性,电网运营商对可再生能源的扩张实施了严格的限制。存储系统为克服上述限制提供了理想的解决方案,释放了额外的可再生能源容量。在储能技术中,由于电池和氢在效率、自放电、成本等方面具有互补性,混合动力电池-氢储能技术表现出了有利的特点。本文研究了在希腊克里特岛实现可再生能源和混合氢电池存储的私人投资的经济可行性。具体而言,根据希腊的脱碳目标,提出了优化可再生能源和混合电池储氢容量的优化配方,以实现投资利润最大化,同时达到80%的最低可再生能源渗透率。本研究的数值结果表明,混合氢电池储能可以显著降低克里特岛的电力生产成本,可能低至64欧元/兆瓦时。从投资者的角度来看,即使有适度的补偿关税,由于克里特岛丰富的风能和太阳能资源,能源转型仍然有利可图。例如,40%的补贴和80欧元/兆瓦时的补偿关税,净现值可以达到4亿欧元。此外,预计到2030年电解槽和燃料电池的成本将降低,这将提高可再生电池-氢混合动力项目的盈利能力。总之,这项研究强调了混合氢电池存储系统在促进克里特岛能源转型方面的可持续和经济前景,对投资者和更广泛的可再生能源领域具有积极意义。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Inventions
Inventions Engineering-Engineering (all)
CiteScore
4.80
自引率
11.80%
发文量
91
审稿时长
12 weeks
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