Geothermal (or ground source energy) systems provide an energy-efficient way of heating and cooling buildings and are becoming increasingly popular in the UK. WJ offers a wide range of services for geothermal clients by drawing on well-established capabilities for borehole drilling, well development including acidisation, pumping and recharge tests, pump and pipework installation, instrumentation and telemetry. Further details of these services can be found on the relevant sections of our website. WJ has particular expertise in supplying and installing plant for the borehole side of open-loop geothermal systems. This includes fabrication of bespoke well headworks for manhole chambers, installation and commissioning of steel and HDPE pipework and the integration of process instrumentation into a building management system (BMS).