The Integration of E-Methanol in District Heating Systems in Sweden

Sammanfattning

This thesis explores the potential integration of e-Methanol into Sweden’s district heating systems, addressing both its application as a renewable fuel and the utilization of excess heat from production processes. The study aims to assess technical feasibility and environmental outcomes, providing insights into how e-Methanol can support Sweden’s long-term decarbonization goals. A qualitative case study approach was applied, complemented by technical and environmental analyses. Primary data were collected through industry engagement with Liquid Wind and case-specific insights from the FlagshipONE project in Örnsköldsvik. The research evaluates boiler compatibility, combustion characteristics, emissions, and the potential for heat recovery using technologies such as industrial heat pumps. Results indicate that e-Methanol is compatible with existing boiler systems, enabling relatively straightforward retrofitting. Its combustion profile reduces nitrogen oxide and particulate emissions compared to conventional methanol, while lifecycle assessments demonstrate substantial greenhouse gas reductions. Furthermore, integration of excess heat into district heating networks enhances system efficiency and can provide measurable cost savings, though economic viability depends on electricity prices and policy support. The thesis suggests that e-Methanol can serve as a vital source of renewable heat and a sustainable transportation fuel, both of which can contribute to Sweden's energy transition.