| Issue |
E3S Web Conf.
Volume 654, 2025
Energy and Sustainability Conference (ESC2025)
|
|
|---|---|---|
| Article Number | 01001 | |
| Number of page(s) | 9 | |
| Section | Building Energy Efficiency & Retrofitting | |
| DOI | https://doi.org/10.1051/e3sconf/202565401001 | |
| Published online | 21 October 2025 | |
Simple digital solution for buildings energy efficiency estimations
Vytautas Magnus University, K. Donelaičio str. 58, 44248, Kaunas, Lithuania
* Corresponding author: This email address is being protected from spambots. You need JavaScript enabled to view it.
Abstract
With rising energy demands and environmental challenges, the need for energy efficiency becomes urgent. This paper presents a user-friendly, simple digital tool for evaluating energy-saving measures in private buildings, including lighting upgrades, insulation of walls and roof, window replacements, and energy-efficient appliances. The tool estimates energy and financial savings and calculates key financial indicators such as payback period (PBP), net present value (NPV), and internal rate of return (IRR). It aims to support informed decision-making by offering personalised recommendations and scenario comparisons. The developed tool promotes sustainability and cost-effective energy use across diverse building types.
© The Authors, published by EDP Sciences, 2025
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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