Salisbury Square Development Achieves Milestone: First Geothermal Borehole Completed for Standalone Cooling and Heating System, a First in the Square Mile
The Salisbury Square Development, located in the heart of the Square Mile, has achieved a significant milestone in sustainability with the completion of its first geothermal borehole. This groundbreaking project marks a major step forward in embracing renewable energy sources and reducing carbon emissions in one of London’s most prestigious areas.
Funded and delivered by the City of London Corporation, the Salisbury Square Development is set to become a new civic hub. It will house a flagship facility for His Majesty’s Courts and Tribunal Services (HMCTS), providing state-of-the-art judicial facilities, as well as a modern headquarters for the City of London Police. Additionally, the development includes grade A office spaces, the refurbishment of a listed building, and an enhanced public realm, all contributing to the City’s reputation as a world-leading business destination.
The geothermal boreholes, reaching an impressive depth of over 240 meters, are among the deepest ever constructed in the City of London. These boreholes will serve as part of a ground source heat pump solution, leveraging the stable temperatures found deep underground. By utilizing this geothermal energy, the development can achieve highly efficient heating and cooling without the need for traditional fossil fuel-based systems. It’s a prime example of harnessing all-electric solutions powered by renewable sources, thereby reducing greenhouse gas emissions and fostering a sustainable future.
Chris Hayward, Policy Chairman at the City of London Corporation, emphasized the significance of this achievement, stating, “The completion of the first geothermal borehole is a major step forward in our plans to create a sustainable and low-carbon development. We are committed to using innovative technologies to reduce our carbon emissions, reach our Net Zero 2040 target, and create a more sustainable London.”
Assistant Commissioner Paul Betts of the City of London Police added that this milestone contributes to the development of the Future Police Estate, providing state-of-the-art and efficient facilities while minimizing the force’s environmental impact. By embracing sustainable practices and reducing their carbon footprint, the Salisbury Square Development and the City of London Police are enhancing their ability to serve the community while preserving the environment.
Jeremy Eavis, Project Director for Mace Construct, expressed their commitment to supporting the City of London’s sustainability goals through innovation. The installation of a closed-loop ground source heat pump system, powered by the network of geothermal boreholes, will free the Salisbury Square Development from reliance on the gas grid, resulting in a significant reduction in operational carbon emissions.
This remarkable achievement aligns with the City of London Corporation’s Net Zero 2040 commitment and showcases their dedication to responsible and sustainable development. Furthermore, Mace, as the main contractor for the project, exemplifies responsible business practices by striving to save 10 million tonnes of carbon for their clients as part of their sustainability ambitions outlined in their Responsible Business Strategy.
The completion of the first geothermal borehole is not only a landmark moment for the Salisbury Square Development but also a testament to London’s ambition in leading the way towards a greener and more sustainable future. By embracing renewable energy and adopting innovative solutions, this development sets a positive example for future projects, demonstrating that economic growth and environmental responsibility can go hand in hand.
