A group of STEM students from Queen Elizabeth’s Grammar School in Horncastle made the trip to Carrington to learn about energy production at the anaerobic digestion (AD) plant. The group started by visiting the forage operations to look at the machinery and logistics involved in harvesting energy crops. The tour returned to the AD plant to look at how crops are stored and then tested in the onsite laboratory. The highlight of the trip was climbing to the top of the digester tank to see the biogas bubbling up through the liquid feed mix. The group were fascinated to learn that whilst the plant powers some seven thousand homes, the excess heat has been used to dry 7400 tonnes of grain and woodchip since December 2016.