Towards Autonomous District Heating: The Modernization of Kankaanpää District Heating Network The modernization of the Kankaanpää district heating network, led by Vatajankoski (2022–2024), represents a groundbreaking achievement in sustainable energy solutions. Originally reliant on fossil fuels since 1980, the network now integrates renewable energy sources and pioneering technologies, positioning it as a global model for modern energy systems. Key advancements include the implementation of the Finland’s first digital twin platform of a district heating network, enabling real-time optimization. The world’s first sand battery, providing efficient energy storage, further highlights the project’s innovative edge. Additionally, the introduction of an e-boiler and heat buffers enhances system flexibility and reliability, while a flue gas scrubber boosts plant efficiency by capturing heat from flue gases. Data centres and a waste heat plant capture surplus industrial heat, further elevating efficiency—all contributing significantly to the 72% reduction in carbon emissions achieved between 2019 and 2024. Serving Kankaanpää’s central city area and parts of Niinisalo, the DH network covered 100% of the city’s district heating market with a delivery reliability of 99.94% in 2024. The project is a testament to Vatajankoski’s commitment to pioneering sustainable energy practices, serving as an exemplary model for resilient, future-ready energy systems worldwide.
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