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Call for papersThe 2026 special issue on Climate & Health is open for submissions.Learn more
Open Journal of Energy Efficiency (OJEE) is an open access journal published quarterly. The goal of this journal is to provide a platform for scientists and academicians all over the world to promote, share, and discuss various new issues and developments in all areas of energy efficiency. All manuscripts must be prep…
Boussaibo Andre, Waoudowa Kande Veronique, Ndjiya Ngasop Stephane, Gautier Kitmo
In the dry tropical zone where access to water is increasingly difficult for populations, solar pumping units are increasingly installed to provide water to population. In the local market, there are essentially two types of solar panels, namely monocrystalli…
Patience Afi Seglah, Komikouma Apelike Wobuibe Neglo, 1 1, 1 1
Global crises, notably climate shocks, degraded ecosystems, and growing energy demand, enforce sustainable production and consumption pathways. A circular bioeconomy offers the opportunities to actualize resource and eco-efficiency enhancement, valorization o…
Salem Baidas
The renewable energy industry has grown its contribution to the global energy mix, particularly in terms of electricity generation. This study investigates the implications of an increasing renewable energy share on OAPEC countries and proposes a comprehensib…
Salem Baidas
Several Organization of Arab Petroleum Exporting Countries (OAPEC) member states (OMSs) have updated their nationally determined contributions (NDCs) with the aim of achieving zero carbon emissions by 2050. Carbon neutrality requires shifting from a linear ca…
Emiliano Finocchi
This study presents a comparative analysis of electricity, hydrogen, and biodiesel as energy vectors, with a focus on powering an aluminum smelter in southern Italy. It evaluates these vectors in terms of efficiency, land requirements for carbon-neutral energ…
Jusu Momoh Ngobeh, Mustapha Sannoh, Joseph Thullah
The unfettered reliance on fossil fuels for centuries has pushed the world to the brink of severe environmental crises. While individual studies on renewable energy generation capacity have been conducted, a comprehensive analysis is lacking. This study aims…
Irene Amahagbor Macaulay, Joshua Innocent Magaji, Innocent Ehiaguina Bello, Abugu Nkechinyere Anthonia
Compliance to local energy efficiency strategies can significantly reduce energy consumption in buildings and promote sustainability. However, Nigeri a Building Energy Efficiency Code (BEEC) seems to be just paper work without enforcement or compliance. Asses…
Ezeddin A. M. Ben Ihrayz, 1 1
This paper introduces the simulation, and control s using Simulink of MATLAB for PCTRAN (Personal Computer Transient Analysis) of the power control system (PWR) type pressurized water reactor of PWR WESTINGHOUSE AP1000. The power controller model produces mat…
Alpha Chukwumela Ajie, Mohammed Moore Ojapah, Endurance Ogheneruona Diemuodeke
Increasing global environment al issues and depleting fossil fuel reserves has necessitated the need for alternative and sustainable fuel. In this paper, the effects of biodiesel and its blend on engine emission and performance characteristics in an internal…
Yvonne H. Ukpaukure, Victor Aimikhe, Mohammed Ojapah
The utilization of liquefied petroleum gas (LPG) as an alternative automobile fuel in Nigeria was studied, focusing on varying different blend ratios of propane and butane as an alternative fuel in a single - cylinder, four-stroke, and spark ignition (SI) eng…
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Open Journal of Energy Efficiency (OJEE) is an open access journal published quarterly. The goal of this journal is to provide a platform for scientists and academicians all over the world to promote, share, and discuss various new issues and developments in all areas of energy efficiency. All manuscripts must be prep… All articles are open access under a CC BY 4.0 licence, with authors retaining copyright.
Authors submit their manuscript, metadata, and declarations through the portal. There is no submission fee.
The editorial office screens the manuscript for scope, completeness, and formatting before assigning a handling editor.
At least two independent reviewers evaluate the manuscript under single-blind review. Where revisions are required, authors respond point by point.
On acceptance the article processing charge is invoiced and the CC BY 4.0 copyright handover is signed.
The article is copyedited, typeset, and given a DOI, then publishes open access with a permanent link.
Manuscripts must be original and not under consideration elsewhere. Submit in Microsoft Word or LaTeX with figures at 300 dpi minimum. Structure research articles as Abstract, Introduction, Methods, Results, Discussion, and References.
Use the journal's numbered (Vancouver) reference style. Cite sources consecutively in the order they appear, and ensure every reference is complete and retrievable.
Declare all funding sources, conflicts of interest, and ethical approvals (including informed consent and animal-care statements where applicable).