Since 2009, the Office of Gas & Electricity Markets (OFGEM) require the so-called 'Big Six' large energy suppliers to provide an annual consolidated statement (CSS) to show the costs, revenues and profits for the different segments of their generation and supply businesses.
*WACOF/E/G’ is weighted average cost of fuel (nuclear), electricity (supply) and gas (thermal and supply) calculated by dividing direct fuel costs by volumes. For the Thermal sub-segment the cost of carbon emissions is added to direct fuel costs before dividing by the generated volume.
This statistic shows the weighted average costs of the domestic gas supply (WACOG) of United Kingdom based energy supplier Centrica from 2010 to 2019, in British pence per therm. In 2019, costs increased to **** British pence per therm.
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Centrica. (March 17, 2020). Weighted average cost of gas (WACOG) of domestic gas supply of Centrica from 2010 to 2019 (in British pence per therm)* [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 26, 2026, from /statistics/555154/centrica-domestic-gas-supply-wacoe/
Centrica. "Weighted average cost of gas (WACOG) of domestic gas supply of Centrica from 2010 to 2019 (in British pence per therm)*." Chart. March 17, 2020. ÌÇÐÄÆƽâ°æ. Accessed July 26, 2026. /statistics/555154/centrica-domestic-gas-supply-wacoe/
Centrica. (2020). Weighted average cost of gas (WACOG) of domestic gas supply of Centrica from 2010 to 2019 (in British pence per therm)*. ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 26, 2026. /statistics/555154/centrica-domestic-gas-supply-wacoe/
Centrica. "Weighted Average Cost of Gas (Wacog) of Domestic Gas Supply of Centrica from 2010 to 2019 (in British Pence per Therm)*." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 17 Mar 2020, /statistics/555154/centrica-domestic-gas-supply-wacoe/
Centrica, Weighted average cost of gas (WACOG) of domestic gas supply of Centrica from 2010 to 2019 (in British pence per therm)* ÌÇÐÄÆƽâ°æ, /statistics/555154/centrica-domestic-gas-supply-wacoe/ (last visited July 26, 2026)
Weighted average cost of gas (WACOG) of domestic gas supply of Centrica from 2010 to 2019 (in British pence per therm)* [Graph], Centrica, March 17, 2020. [Online]. Available: /statistics/555154/centrica-domestic-gas-supply-wacoe/
