We have operated the Stublach Gas Storage Project, a salt cavern storage facility in Cheshire, Northwich since 2007. Now fully completed, the scheme is the largest storage facility in the country, enhancing the security of supply to the UK gas market. Stublach comprises 20 underground salt caverns, created between 2009 and 2018. Each of these caverns stores natural gas over 500 metres below the surface. The salt caverns are formed by pumping water into the ground (solution mining) to dissolve the salt and to create large underground chambers connected to the surface by a series of metal tubes cemented into the overlying rock. The Cheshire salt plains are an ideal geological location for this type of storage.

Stored gas is drawn from the national transmission system (the network of underground pipes crossing the UK) and stored in the salt caverns until it is required by our customers. A gas compression station is located on the Stublach site to move the gas in and out of the caverns when demand requires. On cold winter days, over 20% of gas supplied to consumers comes from UK storage facilities. Storengy UK’s 4.4 TWh storage capacity is equivalent to the energy consumption of 0.6% UK (300,000) households.

The site provides long term employment for 48 members of staff all with varying levels of qualifications and different expertise, everything from engineering, maintenance to commercial and finance. We also provide work for a number of local contractors and suppliers.