The storage capacity is around 330 million cubic metres of gas. The caverns were formed using seawater to leach out salt deposits around two kilometres underground, and the facility has been in operation since 2012.
Aldbrough has the capacity to deliver gas to the National Transmission System at a rate of up to 40 mcm per day, equivalent to the average daily consumption of eight million UK homes, and the ability to have up to 30 mcm of gas per day injected. Aldbrough provides around 7% of the total gas storage capacity in the UK and around 25% of gas deliverability.
The Aldbrough facility is owned by SSE and Equinor (UK) Ltd, who hold two-thirds and one third respectively.