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Open Access

ISSN 2690-1692

© 2025 by the authors; CC BY 4.0 licence

Journal of Energy and Power Technology , Volume 7 , Issue 3 (2025)

Pages: 58

Published: November 2025

(This book is a printed edition that was published in Journal of Energy and Power Technology)

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Cover Story: This paper presents a practical way to harvest energy from indoor lighting. By tuning LED emission to match the silicon bandgap and refining the layout of the photovoltaic panels, the system reaches efficiencies close to 31% with 37% photon recycling. In tall buildings, it offers a steady source of renewable power drawn from everyday light..View this paper.

Volume 7,Issue 3

Open Access Original Research

Photon Recycling for Indoor Energy Harvesting: Optical Optimization of LED-Driven Silicon Photovoltaic Systems

Received: 06 July 2025;  Published: 11 September 2025;  doi: 10.21926/jept.2503013

Abstract

Indoor environments offer a unique opportunity for photon recycling using LED-based illumination, particularly to address energy limitations of solar photovoltaic (PV) systems during nighttime or in low-light conditions. This study presents an optical and electrical performance evaluation of silicon-based photovoltaic (SPV) panels operating under controlled indoor LED lighting. Despite the low irradiance (~1.4 mW/cm2), significant power output was achieved through engineer [...]

Open Access Original Research

Fairness and Reasonableness Tariff Indicator (FRTI) to Meter and Compare Rate Policy in the Electricity Regimes. The Case of Argentina in 2022

Received: 01 May 2025;  Published: 25 August 2025;  doi: 10.21926/jept.2503012

Abstract

The tariff policy for energy services is a fundamental issue for today's societies, especially for end users, including residential, commercial, and industrial. The main objective of this paper is to propose a statistical method to calculate, compare, and evaluate policies of this nature. To this end, firstly, it is intended to rethink an old concept on this type of policy, the principle of fairness and reasonableness, through the linkage with the perspective of human rights, specifically with t [...]

Open Access Original Research

Lithium Stable Flexible Polyethylene Oxide-Based Composite Electrolyte with High Lithium-Ion Conducting NASICON-Type Solid Electrolyte for Lithium Batteries

Received: 28 April 2025;  Published: 13 August 2025;  doi: 10.21926/jept.2503011

Abstract

Solid lithium-ion conducting polymer electrolytes are attractive candidates for battery applications because they are flexible and less flammable, and can be easily prepared as large-sized thin films. However, the room temperature conductivity of conventional polymer electrolytes is relatively low, and detrimental lithium dendrite formation is observed at high current density. In this study, a composite polymer electrolyte of polyethylene oxide (PEO) with lithium bis(trifluoromethanesulfonyl)imi [...]
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