Economic evaluation of photovoltaic and energy storage technologies for future domestic energy systems – A case study of the UK

Wang, Yue, Das, Ridoy, Putrus, Ghanim and Kotter, Richard (2020) Economic evaluation of photovoltaic and energy storage technologies for future domestic energy systems – A case study of the UK. Energy, 203. p. 117826. ISSN 0360-5442

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Developments in photovoltaic (PV) technologies and mass production have resulted in continuous reduction of PV systems cost. However, concerns remain about the financial feasibility for investments in PV systems, which is facing a global shrinking of government support. This work evaluates the investment attractiveness of rooftop PV installations and the impact of energy storage systems (ESS), using the UK as a case study. The evaluation considers the location of installation, the temporal evolution of the supporting policies, local energy consumption, electricity price and cost of investment at different years. Furthermore, the use of electric vehicles (EVs) as an alternative to ESS for complementing PV systems is also investigated. Optimisation techniques are employed to schedule ESS and EV energy exchange in order to maximise the investment return. The results show that the net present value of PV systems in the UK has dropped from £28,650 in 2011 to £1,200 in 2017, due to declining government support towards PV technologies. It further shows that by incorporating ESS with PV systems, the benefit in 2017 can be increased by 46%. Conversely, employing the EV as energy storage would not bring additional benefits, considering the associated battery degradation and the current battery manufacturing cost.

Item Type: Article
Uncontrolled Keywords: PV, Energy storage, Electric vehicle, Feed-in tariff, Net present value, Non-linear optimisation
Subjects: H200 Civil Engineering
H800 Chemical, Process and Energy Engineering
H900 Others in Engineering
Department: Faculties > Engineering and Environment > Geography and Environmental Sciences
Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User: Elena Carlaw
Date Deposited: 13 May 2020 11:22
Last Modified: 15 Sep 2020 11:00

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