Flexible and low-carbon renewable technologies in response to climate change

To address climate change and align with the EU’s REPowerEU strategy, modern energy systems must become more flexible, low-carbon, and environmentally compliant. Flexibility – the ability to adapt to fluctuations in energy supply, demand, and regulatory constraints – is essential in designing and operating district energy systems, particularly when integrating variable renewable energy sources. This paper investigates how system flexibility can be enhanced through renewable technologies, focusing on large-scale heat pumps. These technologies not only support deep decarbonization but also promote responsive and sustainable operation of district heating networks, in line with environmental policies and emission targets. The study analyzes how thermal system flexibility can be allocated across components and coordinated over time, geography, and energy markets. A detailed performance evaluation of large-scale heat pumps is presented, demonstrating their potential to reduce greenhouse gas emissions while improving overall system resilience and operational efficiency. Findings underscore the critical role of embedding flexibility across all levels of energy infrastructure to meet climate obli- gations, support the energy transition, and ensure regulatory compliance. By leveraging technologies like heat pumps, energy systems can better adapt to climate-related challenges and contribute meaningfully to a sustainable, low-carbon future.