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Production Efficiency (PE) is a core element of the industry production optimisation and asset stewardship focus which is vital to maximising economic recovery from the UKCS

The total cost of decommissioning UK offshore oil and gas production, transportation and processing infrastructure has reduced by 19%, on a like-for-like basis, to £48bn compared with the 2017 base-line estimate of £59.7bn

This report documents the purpose, scope, estimating methodology, inputs, analysis, assurance and outputs of the Authority’s 2017 United Kingdom Continental Shelf (UKCS) Decommissioning Cost Estimate

Operating costs (OPEX) in the United Kingdom Continental Shelf (UKCS) fell in 2016 in terms of both total OPEX and average unit operating cost (UOC), measured per barrel of oil equivalent (boe).

Production efficiency (PE) has risen for a fourth consecutive year, in 2016 it reached 73%, driving increased production in the United Kingdom Continental Shelf (UKCS)

Decommissioning cost estimates continue to fall and have reduced by a further 4% in 2021

The purpose of this annual report is to provide an estimate of the UKCS’s remaining recoverable petroleum resources. The Authority estimates that there remains in the range 10 to 20 billion barrels or more of oil equivalent (boe), including discovered and undiscovered petroleum resources

Updated March 2025

updated 20 May 2025