by Walid Mohamed Mahmud

Received: 09 September 2024;  Published: 26 March 2026;  doi: 10.21926/jept.2601006

Electrical submersible pumps (ESPs) are an efficient and reliable artificial lift method for lifting large volumes of fluids from wellbores at flexible rates. Despite their advantages, including high flow rates and real-time downhole telemetry, ESPs are prone to frequent and unforeseen failures under harsh reservoir conditions, resulting in costly production delays and interventions. This paper presents an integrated evaluation of ESP failure mechanisms based on an analysis of run and pull repor [...]

by Brendan Ifeany Ekwueme  , Ogheneruona Endurance Diemuodeke  , Mohammed Moore Ojapah  and Chidozie Ezekwem

Received: 17 September 2025;  Published: 09 March 2026;  doi: 10.21926/jept.2601005

The work focused on modelling and optimisation of integrated renewable energy conversion technologies based on sunlight, wind, and biomass, with dual energy storage (battery and hydrogen), for Patani Island, Delta State, Nigeria. The study was aimed at satisfying the energy demand of the Patani Island community (5°13’43” N, 6°11’29” E). A mathematical model was developed to describe the integrated system, and a genetic algorithm was employed to optimize the allocation of energy demand, energy ge [...]

by Zhichao Wang  , Daisuke Mori  , Sou Taminato  , Yasuo Takeda  , Osamu Yamamoto  and Nobuyuki Imanishi

Received: 18 November 2025;  Published: 26 February 2026;  doi: 10.21926/jept.2601004

A thin film of PEO₁₈Li(CF₃SO₂)₂N(LiTFSI)-tetraethylene glycol dimethyl ether (G4)-Li_1.4Al_0.4Ge_0.2Ti_1.4(PO₄)₃-LiCl·H₂O (LAGTP·LiCl) was prepared by addition of 1,2-dimethoxyethane (DME). The grain boundary resistance of PEO₁₈ [...]

by Emeka H. Amalu  and Justice O. Nwaneto

Received: 26 June 2025;  Published: 13 February 2026;  doi: 10.21926/jept.2601003

As the demand for cleaner-greener energy surges owing to more nations adopting Net Zero Emission by 2050, wind turbine (WT) technology is increasingly poised as one of the technologies to match the demand. Capacity building in the development of cost-effective WT tower with improved reliability and safety has become critical to delivering Net Zero mandate. This research demonstrates implementation of Taguchi Design of Experiment (DoE) in conjunction with Signal-to-noise ratio (S/N) to optimise b [...]

by Uchechukwu Nwaiwu  , Fan He  , Matthew Leach  and Lirong Liu

Received: 31 July 2025;  Published: 12 January 2026;  doi: 10.21926/jept.2601002

Increasing local energy access in developing countries, particularly in off-grid regions where mini-grids are often overloaded, remains a critically underexplored area in energy transition. These regions often face significant technical and economic challenges, such as low generation capacity, high energy costs, limited energy access, and heavy reliance on diesel fuels. This study explores capacity expansion by integrating small-scale geothermal energy into such a mini-grid system to enhance the [...]

by Journal of Energy and Power Technology Editorial Office

Received: 04 January 2026;  Published: 04 January 2026;  doi: 10.21926/jept.2601001

The editors of Journal of Energy and Power Technology would like to express their sincere gratitude to the following reviewers for assessing manuscripts in 2025. We greatly appreciate the contribution of expert reviewers, which is crucial to the journal's editorial process. We aim to recognize reviewer contributions through several mechanisms, of which the annual publication of reviewer names is one. Reviewers can download a certificate of recognition directly from our submi [...]