E-ISSN 2705-3954 | ISSN 0794-4756
 
2026, Vol: 33, Issue: 1
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Original Research 
NJE. 2025; 32(1): 116-120


Design and Economic Analysis of a Stand-alone Photovoltaic System for a University Building in Nigeria

Ignatius Kema Okakwu.


Abstract
The important of energy supply in a University building in any Country cannot be over-emphasized. One major needs of a University is constant power supply. This study focuses on the use of a stand-alone PV-system to power the department of Electrical and Electronics Engineering, Ibogun campus, Nigeria. The ratings of PV-panels, charge controller, battery and inverter, together with their numbers were determined in this study. The results reveals that a total number of 94 PV panels, 16 batteries, 1 inverter and 1 charge controller are required. The ratings of the system component obtained were 23.24kW, 1189.24Ah, 100A and 12.5kVA for PV panels, battery capacity, charge controller and inverter respectively. The result also reveals the NPV and DPBP of the system to be ₦32,834,459.71 and 1.7 years respectively. The COE of the stand-alone system was determined to be ₦0.7859/kWh, which is far short of the grid tariff in Nigeria.

Key words: PV system, energy, cost of energy, net present value, payback period, university


 
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Pubmed Style

Ignatius kema okakwu. Design and Economic Analysis of a Stand-alone Photovoltaic System for a University Building in Nigeria. NJE. 2025; 32(1): 116-120.

Web Style

Ignatius kema okakwu. Design and Economic Analysis of a Stand-alone Photovoltaic System for a University Building in Nigeria. https://www.njeabu.com.ng/?mno=230396 [Access: June 26, 2026].

AMA (American Medical Association) Style

Ignatius kema okakwu. Design and Economic Analysis of a Stand-alone Photovoltaic System for a University Building in Nigeria. NJE. 2025; 32(1): 116-120.


Vancouver/ICMJE Style

Ignatius kema okakwu. Design and Economic Analysis of a Stand-alone Photovoltaic System for a University Building in Nigeria. NJE. (2025), [cited June 26, 2026]; 32(1): 116-120.


Harvard Style

Ignatius kema okakwu (2025) Design and Economic Analysis of a Stand-alone Photovoltaic System for a University Building in Nigeria. NJE, 32 (1), 116-120.


Turabian Style

Ignatius kema okakwu. 2025. Design and Economic Analysis of a Stand-alone Photovoltaic System for a University Building in Nigeria. Nigerian Journal of Engineering, 32 (1), 116-120.


Chicago Style

Ignatius kema okakwu. "Design and Economic Analysis of a Stand-alone Photovoltaic System for a University Building in Nigeria." Nigerian Journal of Engineering 32 (2025), 116-120.


MLA (The Modern Language Association) Style

Ignatius kema okakwu. "Design and Economic Analysis of a Stand-alone Photovoltaic System for a University Building in Nigeria." Nigerian Journal of Engineering 32.1 (2025), 116-120. Print.


APA (American Psychological Association) Style

Ignatius kema okakwu (2025) Design and Economic Analysis of a Stand-alone Photovoltaic System for a University Building in Nigeria. Nigerian Journal of Engineering, 32 (1), 116-120.


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Nigerian Journal of Engineering (NJE) is a publication of the Faculty of Engineering, Ahmadu Bello University, Zaria - Nigeria. NJE publishes origina ... Read more.



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