Rendesco
Utility System ConstructionEngland, United Kingdom51-200 Employees
Rendesco designs, installs, and operates clean heat systems that move heat from below the surface into buildings, delivering sustainable heat and hot water. The company concentrates on ground-source heat networks and heat pumps to decarbonise heating across the UK and currently manages more than 70 networks that serve over 3,000 homes. It is based in London, England, and has been active since 2012 in the utility system construction sector focused on advancing clean heat solutions. The organisation draws on a cross-disciplinary technical team with backgrounds in investment, property, construction and renewable energy to deliver its projects. Each property served is associated with significant CO2 reductions—about 18 tonnes compared with gas boilers and around 3 tonnes relative to an air-source heat pump. In 2025, Rendesco formed a collaboration with Lastmile UK to design and construct what is described as one of the world's largest ambient heat networks, featuring a water reservoir as the heat source and heat sink.