The gas to grid plant Icknield in UK - Case Study
Location: Ipsden, Oxfordshire (UK)
Capacity: 960 kWel
Input materials: Pig slurry, farm by-products, energy crops
Features: Production of 700 Nm³ biomethane, 360 kWel CHP, Supply natural gas to 2,150 households, Fermentation residue as fertiliser
38 million kilowatt hours per year
Icknield Gas Ltd. is the first biogas plant in Great Britain with a gas processing facility from EnviTec Biogas AG. Since the end of 2014, the 370 cubic metre plant, along with a 360 kWel combined heat and power plant in Ipsden, Oxfordshire, is feeding into the existing network of the Southern Gas Networks. The delivery pressure of the EnviThan plant is thereby sufficiently high; an additional compression is thus not required. The CHP is used for parasitic demands with the balance being fed into the grid.
The biogas plant is operated using a combination of corn silage, pig slurry, grain and whole-plant silage. This way, around 10,000 tonnes of pig slurry can be used annually, preventing the need to spread raw slurry onto local fields. Using the EnviThan biogas upgrading, Icknield Gas Ltd. supplies an annual energy volume of approximately 35 million kilowatt hours (kWh) of biomethane.
A British home consumes an average of about 16,500 kWh of gas per year – with the new plant, the customer can supply gas to about 2,150 households. Furthermore, the subsequent use of the fermentation residue as fertiliser will lead to a reduction in the use of chemical fertilisers in the neighbouring agricultural area.
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