DeponiGasTeknik DGT AB is a consulting firm working in the Environment and Energy sector. A special field is to design and develope plants for extraction and utilization of landfill gas. Amoung the plants that DeponiGasTeknik has designed through the years are a new compressorstation in Helsingborg. Other interesting projects are the fixed link across Öresund where DeponiGasTeknik has design a system on the old landfill to prevent gas to penetrate the railway and highway area. An other project is the digestercells in Växjo which are a development of the common biocells. Finally are an example presented on the closed digesters that DeponiGasTeknik has designed in Helsingborg for around 30 000-40 000 m3 waste per year.