EXAMINING THE FEASIBILITY OF MINE THERMAL ENERGY STORAGE (MTES) IN NOVA SCOTIA: A CASE STUDY OF GLACE BAY

Abstract

Mine Thermal Energy Storage (MTES) offers a promising solution for sustainable heating by repurposing abandoned, water-filled mines as underground thermal reser-voirs. This study assesses the feasibility of implementing MTES in Nova Scotia, with a focus on the Sydney Coalfield region, particularly Glace Bay. The research combines geological analysis, residential heat demand estimation, thermal storage capacity esti-mation, and cost-benefit evaluation to determine whether abandoned coal mines can support district heating applications. Results show that MTES can deliver substantial heating cost reductions compared to oil-based systems, while significantly lowering greenhouse gas emissions. The study also explores the integration of MTES with local renewable energy sources, including wind and solar, to enhance energy system flexi-bility and reliability. International case studies from Springhill (Canada), Heerlen (Netherlands), and Bochum (Germany) are analyzed to illustrate the scalability, per-formance, and operational challenges of MTES systems. Key technical barriers—such as water quality management, infrastructure investment, and seasonal variability in heat demand—are discussed. Overall, the findings highlight MTES as a viable and sustainable energy storage approach for Nova Scotia and other regions with legacy mining infrastructure.