Centrica Results Presentation Deck

Rules of thumb: E&P and Nuclear Please refer to disclaimer on slide 30 of this presentation before using this information. The table shows Centrica's earnings and free cash flow (FCF) sensitivity to changes in commodity prices on a hedged basis for 2022 as at 1 February 2022 Spirit Gas 1 CSL Gas Baseload power Movement 5p/therm 5p/therm £5/MWh 1. Excludes gas from assets held for sale. Sensitivities are based on 90% of 2021 volumes for retained Spirit assets and 100% of 2021 CSL and Nuclear volumes. Earnings impact assumes blended tax rates of Spirit Energy 40%, CSL 40% and UK nuclear 19%. 31 Centrica plc Preliminary Results 2021 2022 Earnings impact ~£2m ~£3m ~£11m 2022 FCF impact ~£6m -~£3m centrica ~£11m

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