Techno-economic feasibility of grid-independent residential roof-top solar PV systems in Muscat, Oman

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Title: Techno-economic feasibility of grid-independent residential roof-top solar PV systems in Muscat, Oman
Authors: Al-Saqlawi, J
Madani, K
Mac Dowell, N
Item Type: Journal Article
Abstract: Oman is a country characterised by high solar availability, yet very little electricity is produced using solar energy. As the residential sector is the largest consumer of electricity in Oman, we develop a novel approach, using houses in Muscat as a case study, to assess the potential of implementing roof-top solar PV/battery technologies, that operate without recourse to the electricity grid. Such systems target the complete decarbonisation of electricity demand per household and are defined in this study as grid-independent systems. The approach adopted starts with a technical assessment of grid-independent systems that evaluates the characteristics of the solar panel and the battery facility required to provide grid-independence. This is then compared to a similar grid-connected system and any techno-economic targets necessary to enhance the feasibility of residential roof-top PV systems in Muscat are identified. Such an analysis was achieved through developing a detailed techno-economic mathematical model describing four sub-systems; the solar panel DC source, the grid-independent sub-system, the grid-connected sub-system and the economic sub-system. The model was implemented in gPROMS and uses real hourly weather and climate conditions matched with real demand data, over a simulated period of 20 years. The results indicate that, in the context of the system studied, grid-independent PV systems are not feasible. However, combined with a sufficiently high electricity price, grid-independent systems can become economically feasible only with significant reductions in battery costs (>90% reductions).
Issue Date: 15-Dec-2018
Date of Acceptance: 8-Oct-2018
ISSN: 0196-8904
Publisher: Elsevier
Start Page: 322
End Page: 334
Journal / Book Title: Energy Conversion and Management
Volume: 178
Copyright Statement: © 2018 Elsevier Ltd. All rights reserved. This manuscript is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Licence
Keywords: 0906 Electrical And Electronic Engineering
Publication Status: Published
Online Publication Date: 2018-10-18
Appears in Collections:Centre for Environmental Policy
Faculty of Natural Sciences

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