The British Geological Survey (BGS) in association with the Department of Energy & Climate Change (DECC) has completed an estimate for the resource (gas-in-place) of shale gas in part of central Britain in an area between Wrexham and Blackpool in the west, and Nottingham and Scarborough in the east. The estimate is in the form of a range to reflect geological uncertainty. The lower limit of the range is 822 tcf (trillion cubic feet) and the upper limit is 2281 tcf, but the central estimate for the resource is 1329 tcf.
This shale gas estimate is a resource figure (gas-in-place) and so represents the gas that the BGS thinks is present, but not the gas that might be possible to extract. The proportion of gas that it may be possible to extract is unknown as it depends on the economic, geological and social factors that will prevail at each operation.