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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…
Lai Yee Khong
This study investigates low- and no-capital energy management strategies for a commercial 500-metric-ton-per-day biodiesel plant located within a Malaysian oleochemical complex in the Klang Valley. Drawing on several years of industrial operating experience a…
Yaw A. Twumasi, Edmund C. Merem, Zhu H. Ning, Harriet B. Yeboah, Priscilla M. Loh, Jeff D. Osei, Olipa Simon, Esi Dadzie, Dorcas T. Gyan, Janeth E. Mjema, Lucinda A. Kangwana, Kingsford K. Annan, Madeline Boyd, Mercy M. Karanja
This study provides a comprehensive analysis of solar energy development in Louisiana, examining current capacity, growth trends, technical and economic feasibility, policy influences, and future prospects within the broader U.S. renewable energy context. Alt…
Paolo Finocchi, Diego Rattazzi, Celina Solari, Clemente Fuggini, Fabrizio Tavaroli
Building Automation represents one of the key leverage points for speeding up the decarbonization of the building sector. In this framework, two schemes exist: the BACS (Building Automation and Control Systems) classification, regulated by the EN ISO 52120-1:…
Gatoto Placide, Richard Cartland, Leonce Havyarimana
Burundi faces persistent energy access challenges, with national electrification rates below 12% and continued dependence on hydropower and biomass. Despite abundant solar resources, systematic assessments of irradiance and temperature variability are scarce,…
Mikel Elguezabal-Mendez, Ane Erviti, Egoi Erviti, Maitena de Elguezabal-Acosta, Amar Ferrer, Noelia Maillo-Aznares, Sergio Rodriguez
This theoretical study compares two renewable energy configurations—Unit A (photovoltaic-only, ground-mounted panels) and Unit B (hybrid solar-wind with elevated photovoltaic panels)—across varying surface areas (1, 5, 10, and 20 hectares) in four locations:…
Mohamed Koroma, Gibrilla Salaam Kamara, Alhaji Mansaray, Ishmail Dainkeh Kamara, Momoh Conteh
The global energy landscape is transforming to tackle climate change, improve energy security, and meet growing energy demands. Energy storage technologies are vital for incorporating “renewable energy”, stabilizing electrical network, and advancing electrifi…
L. Y. Khong, P. V. Chai
The Malaysian economy heavily relies on the agricultural-based oleochemical industry, which is known for its thermal energy-intensive operation but is considered green due to its use of natural fats and oils. It significantly contributes to the economy and fo…
Fadl Bdeir, Chadi Nasrallah
We investigated the concept of NZEB and applied it to a case study of a 100 m 2 home in Beirut weather using Ecotect software. A number of passive design strategies, including building envelope, orientation, glazing, and shading, will be studied in the first…
Ezeddin A. M. Ben Ihrayz, 1 1
The fifth generation (5G) wireless communication requires the massive multiple input multiple output (MIMO) technique. The massive MIMO antenna array of the millimeter wave (mm-wave) is recognized as a key enabler because of its high spectral efficiency. The…
Kajal Sheth, Dhvanil Patel, Gautam Swami
On average, long-haul trucks in the U.S. use approximately 667 million gallons of fuel each year just for idling. This idling primarily facilitates climate control operations during driver rest periods. To mitigate this, our study explored ways to diminish th…
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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).