TEG Group, formerly known as TEG Environmental, is a waste to fertiliser company. TEG started out on Ofex (Plus-quoted) before moving to Aim in July 2004 at 50p a share. TEG uses Silo Cage in-vessel composting technology. It can take between eight and 21 days to carry out the process. TEG generates revenues from operating plants and also building plants for other people. There are plants operational in Norfolk, Yorkshire, Lancashire, Wales and Scotland. In 2009, TEG entered into a joint venture with Munich-based UTS Biogastechnik to develop anaerobic digestion plants in the UK.