No, the price cap does not cap your total bill. Ofgem caps the unit rate per kWh and the daily standing charge. The more energy your household uses, the higher your bill, regardless of the cap. The current price cap applies to around 19 million UK households on standard variable tariffs who pay by direct debit, prepayment meter, or standard credit.
The April–June 2026 cap of £1,641 (historical) was £117 below January–March, partly because green levies moved into general taxation. July–September 2026 was £1,663. The current October–December 2026 typical dual-fuel Direct Debit figure is £1,723, up 4% / £60 on the previous quarter.