Please use this identifier to cite or link to this item:
http://bura.brunel.ac.uk/handle/2438/20275
Title: | A financial model for lithium-ion storage in a photovoltaic and biogas energy system |
Authors: | Lai, CS Locatelli, G Pimm, A Tao, Y Li, X Lai, LL |
Keywords: | Lithium-ion energy storage;Financing;Financial model;Solar PV;Storage degradation |
Issue Date: | 23-May-2019 |
Publisher: | Elsevier |
Citation: | Applied Energy, 2019, 251 |
Abstract: | Electrical energy storage (EES) such as lithium-ion (Li-ion) batteries can reduce curtailment of renewables, maximizing renewable utilization by storing surplus electricity. Several techno-economic analyses have been performed on EES, but few have investigated the financial performance. This paper presents a state-of-the-art financial model obtaining novel and significative financial and economics results when applied to Li-ion EES. This work is a significant step forward since traditional analysis on EES are based on oversimplified and unrealistic economic models. A discounted cash flow model for the Li-ion EES is introduced and applied to examine the financial performance of three EES operating scenarios. Real-life solar irradiance, load, and retail electricity price data from Kenya are used to develop a set of case studies. The EES is coupled with photovoltaics and an anaerobic digestion biogas power plant. The results show the impact of capital cost: the Li-ion project is unprofitable in Kenya with a capital cost of 1500 $/kWh, but is profitable at 200 $/kWh. The study shows that the EES will generate a higher profit if it is cycled more frequently (hence a higher lifetime electricity output) although the lifetime is reduced due to degradation. |
URI: | http://bura.brunel.ac.uk/handle/2438/20275 |
DOI: | http://dx.doi.org/10.1016/j.apenergy.2019.04.175 |
ISSN: | 0306-2619 http://dx.doi.org/10.1016/j.apenergy.2019.04.175 |
Appears in Collections: | Dept of Electronic and Electrical Engineering Research Papers |
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