Options
Optimization-based integration of a metal hydride storage in a residential energy system – A techno-economic analysis
Citation Link: https://doi.org/10.15480/882.16901
Publikationstyp
Journal Article
Date Issued
2026-06-01
Sprache
English
TORE-DOI
Journal
Volume
15
Article Number
109146
Citation
Energy Reports 15: 109146 (2026)
Publisher DOI
Scopus ID
Publisher
Elsevier
The increased use of electrified heating systems in residential buildings places additional demands on the power grid, alongside the growing load from, e.g., photovoltaic power. One solution to relieve the strain on the power grid could be to increase the energy autarky of residential buildings by increasing the consumption of self-generated electricity. Higher self-consumption requires an energy storage system that is capable of storing large amounts of electricity (seasonally). Metal hydride storage systems could be a technically feasible solution. Excess heat from the metal hydride storage tank could contribute to the heating system and further reduce electricity consumption. This study aims to investigate the extent to which a metal hydride storage system can be used in a single-family house to relieve stress on the power grid significantly. To investigate this novel approach, a design and operation optimization is performed to determine the most cost-effective system configuration at maximum autarky level. Compared to a reference case with no seasonal energy storage, the autarky level could be increased by integrating a metal hydride storage system by 27%-points to 79% resulting in a feed-in reduction of 35% into the superior power grid. In addition, grid electricity consumption can be reduced by up to 45%. However, such a system results in a 4.3-fold increase in total annual costs. Even with positive developments in the future (technological and economic), this factor can only be reduced to 2.5. Independent of the clear cost increase under current cost relations, the integration of metal hydride storage systems into a future home energy system is a technically viable option.
Subjects
Autarky
Energy system optimization
Metal hydride storage
Residential energy system
DDC Class
690: Building, Construction
621.3: Electrical Engineering, Electronic Engineering
540: Chemistry
Publication version
publishedVersion
Loading...
Name
1-s2.0-S2352484726001150-main.pdf
Type
Main Article
Size
3.62 MB
Format
Adobe PDF