Data centres can be part of a decarbonisation solution

By the Editorial Team · Thursday, September 3, 2026

The growing energy demands of data centres, especially for AI infrastructure, have raised concerns about increased carbon emissions, but experts highlight the potential to reuse their excess heat for heating nearby buildings. This approach could help reduce reliance on fossil fuels and lower overall emissions, turning data centres into assets for community decarbonisation if widely adopted.

The rapid expansion of data centres, driven in part by increasing demand for artificial intelligence infrastructure, has raised concerns about rising carbon emissions associated with their energy consumption. However, experts suggest that data centres can also play a role in reducing overall carbon footprints if their excess heat is harnessed effectively.

Data centres require significant amounts of electricity to power servers and cooling systems, generating considerable heat as a byproduct. While this heat is typically vented and wasted, emerging technologies and strategic planning offer opportunities to capture and redirect it to nearby buildings, such as homes, schools, and hospitals. By reusing this heat for space heating, communities can reduce their reliance on fossil fuel-based energy sources, potentially lowering emissions that would otherwise result from traditional heating methods.

Mark Lee, CEO of Deep Green, emphasized that evaluating data centres purely on their direct emissions overlooks the potential carbon savings from heat recovery. He argues that as the demand for AI and data infrastructure grows, energy use should be optimized to serve dual purposes—both computing needs and community heating. This integrated approach could transform data centres into contributors to decarbonisation efforts rather than solely as emission sources.

This perspective adds complexity to the ongoing debate about the environmental impacts of large-scale computing facilities. While data centre growth undeniably increases electricity demand, leveraging their thermal output may offer a valuable pathway to mitigate associated emissions. The extent to which heat recovery can be implemented and its overall effectiveness in reducing carbon footprints will depend on regional infrastructure, technology adoption, and collaboration between data centre operators and local communities.

This article was reported by synthesizing coverage from multiple independent news outlets to present a balanced, unbiased account. Read about our editorial standards. Spotted an error? Let us know.