Techno-Economic Analysis of a Commercial Factory’s Renewable Energy System Replacement Alternatives

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Renewables typically have a finite life expectancy of around 20 to 30 years. An existing wind energy system for a large commercial factory in the rural area of Barnard Castle, United Kingdom (UK) is nearing the end of its usable life. The existing system is operating at 8 % load factor, providing only 5 % of the site annual load. A techno-economic assessment of three renewable energy proposals will ensure the site’s energy strategy is successful. Three proposals were examined, to continue with the current system until failure, to overhaul the current system and prolong its usable life, or to replace the wind turbines with a rooftop photovoltaic (PV) system. The Net Present Value, Payback Period, Levelised Cost of Electricity and the equivalent Carbon Dioxide emissions were compared for each alternative. The photovoltaic system was the unanimous choice. The Analytical Hierarchy Process was used to systematically select the most appropriate PV module technology for the proposed system, based on the most important factors. Seven different PV module variants were selected and given weighted ratings to determine the most suitable model, the outcome of this was the SunPower SPR-MAX2 360 model. This decision was verified by the Consistency Ratio which indicated an informed decision had been made.
Original languageEnglish
Title of host publication2021 56th International Universities Power Engineering Conference
Subtitle of host publicationPowering Net Zero Emissions, UPEC 2021 - Proceedings
ISBN (Electronic)9781665443890
Publication statusPublished - 30 Sept 2021
Event56th International Universities Power Engineering Conference - Middlesbrough, United Kingdom
Duration: 31 Aug 20213 Sept 2021


Conference56th International Universities Power Engineering Conference
Abbreviated titleUPEC
Country/TerritoryUnited Kingdom
Internet address


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