Underground Thermal Energy Storage for Decarbonizing District Heating Systems (ThermStore-DH)

Project Description

Ireland relies heavily on fossil fuels for heating, contributing significantly to national CO2 emissions. ThermStore-DH addresses this challenge by developing an integrated approach to store and reuse heat underground, using underground thermal energy storage (UTES) technologies such as Aquifer Thermal Energy Storage (ATES) and Borehole Thermal Energy Storage (BTES). We will analyze and model Ireland’s limestone-shale geological formations to identify suitable underground storage sites based on geological, engineering, and economic criteria. Geological characterization data, advanced laboratory and field testing, and analysis of groundwater constraints from national groundwater databases will be used to inform a large set of heat and groundwater flow models. These models will examine how underground heat storage systems perform under different geological and groundwater conditions and will help optimize system designs for high efficiency and reliability. By integrating surplus heat from data centres, solar thermal and industrial sources, the project will evaluate overall system performance, economic viability, and environmental benefits. Outputs will include a workflow for identifying suitable geological settings, optimized system designs, and clear recommendations for stakeholders and policymakers. By providing robust data, innovative tools, and practical guidance, this project will accelerate the deployment of low-carbon district heating solutions and help Ireland meet its climate targets by reducing heating-related emissions.