Soil Environment Services has been undertaking power cable backfill thermal resistivity testing to ENA Testing Specifications for nearly 20 years. We have a specialised thermal testing and research laboratory which includes a Calibrated Hotbox and highly experienced staff who have worked on some of the biggest cable routes in the UK. Current work includes both thermal and electrical resistivity testing on solar array sites and research investigations into various low carbon backfill althernatives to reduce the carbon footprint of cement in ‘cement’ bound sand.