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)-Li1.4Al0.4Ge0.2Ti1.4(PO4)3-LiCl·H2O (LAGTP·LiCl) was prepared by addition of 1,2-dimethoxyethane (DME). The grain boundary resistance of PEO18LiTFSI-LAGTP·LiCl was considerably reduced by the addition of G4, and a large-sized thin film of the composite polymer electrolyte was prepared easily by the addition of 10 wt.% DME. The electrical conductivity of [(PEO18LiTFSI-2G4)-5 wt.% LAGTP·LiCl]-10 wt.% DME was 1.2 × 10-4 S cm-1 at 25°C, a [...]

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 submission system. Additionally, reviewers can [...]

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 generation, and energy [...]

by G.-Fivos Sargentis  , Nikolaos Papadodimas  , Ioannis Benekos  , Nikolaos M. Katsoulakos  , Panayiotis Dimitriadis  , Nikos Tepetidis  , Romanos Ioannidis  , Ilias Arvanitidis  , Marios Athanasios Angelidis  , Danai Saperopoulou  , Georgios David Laoutaris  , Matthaios Maravelakis  , Orestis I. Amiralis  , David Markantonis  , Athanasia Alexandridou  , Nikos Mamassis  and Demetris Koutsoyiannis

Received: 20 December 2025;  Published: 20 April 2026;  doi: 10.21926/jept.2602008

The increasing penetration of renewable energy sources (RES) in the energy mix, particularly solar photovoltaic and wind power, poses significant challenges to electricity grid reliability due to their inherent stochastic variability. This study develops a stochastic framework to assess the ability of RES to balance electricity demand, with a focus on storage requirements and reliability implications. Using North Euboea, Greece, as a representative case study, normalized hourly time series of electricity demand, so [...]

by Leonardo Alves Messias  , José Luis Domingos  , Thiago Augusto Mendes  , Bruno Barzellay Ferreira da Costa  , Ana Carolina Fernandes Maciel  , Saymon Fonseca Santos Mendes  and Raphael de Aquino Gomes

Received: 17 October 2025;  Published: 03 April 2026;  doi: 10.21926/jept.2602007

The increasing demand for renewable energy sources has intensified the adoption of photovoltaic systems. This study proposes predictive models for solar power generation that operate without dependence on on-site meteorological stations. The proposed approach integrates generation data from geographically distributed plants and accounts for the distance to meteorological stations when constructing climatic variables. Two machine learning techniques, Random Forest (RF) and Long Short-Term Memory (LSTM) networks, wer [...]

by Peter Ebhodaghe Akhator  and Ufuoma Georgina Unueroh

Received: 16 February 2026;  Published: 15 May 2026;  doi: 10.21926/jept.2602009

Waste-derived briquettes offer a promising alternative to fossil fuels and are characterised by low production costs, high volumetric calorific value, robust mechanical strength, and excellent durability. To optimize their adoption, four variants of waste-derived briquettes were produced with different mass ratios of sawdust to polyethylene terephthalate (PET) plastic (100:0, 90:10, 80:20, and 70:30) using high-pressure compaction without binders. Thermogravimetric analysis (TGA) and the Coats-Redfern method were e [...]