The UK energy regulator Ofgem raised the energy price cap by 13% from 1 July 2025, reflecting higher wholesale oil and gas costs caused by the US-Israel war with Iran, according to BBC Business. The cap affects millions of households in England, Scotland and Wales, with typical annual bills rising by £221 to £1,862 on the old consumption basis.
Wholesale Cost Drivers
The increase is directly attributed to higher wholesale oil and gas costs as a result of the ongoing US-Israel war with Iran, BBC Business reported. While specific wholesale price levels are not detailed, the regulator's quarterly adjustment mechanism captures these upstream cost movements. The cap is set every three months for around 33 million households on standard variable tariffs.
Regulatory Price Cap Adjustment
Between 1 July and 30 September 2025, gas prices for typical dual-fuel direct debit households are capped at 7.33 pence per kilowatt hour (kWh), up from 5.74p previously. Electricity prices are capped at 26.11p per kWh, up from 24.67p. This results in a typical annual bill of £1,862 under the old consumption estimates. For customers paying by standard credit, the typical bill is £2,005, while prepayment customers face £1,812.
| Customer Type | Typical Annual Bill (1 July 2025) | Increase from Previous Quarter |
|---|---|---|
| Direct debit (old consumption) | £1,862 | +13% |
| Standard credit | £2,005 | +13% |
| Prepayment | £1,812 | +13% |
Changing Consumption Patterns
Ofgem has revised its definition of a 'typical' household, recognising that many households have cut back usage due to high prices and improved energy efficiency. The new typical annual consumption is 9,500 kWh of gas and 2,500 kWh of electricity, down from the previous 11,500 kWh and 2,700 kWh respectively. Under these new assumptions, the typical direct debit bill from 1 July is £1,663, representing a 12% increase. The regulator last changed these estimates in 2019 and 2023.
Forward Cap Trajectory
According to BBC Business, the price cap is projected to fluctuate over the next year. Based on the chart data, the cap for typical direct debit households (old consumption) is expected to be:
- October 2025: £1,892
- January 2026: £1,758
- April 2026: £1,641
These projections suggest a gradual decline from the July 2025 peak, contingent on wholesale cost movements and geopolitical developments.
Market Implications
For commodity traders and procurement teams, the UK energy price cap serves as a downstream indicator of wholesale cost pressures. The 13% increase signals that upstream oil and gas costs have been passed through to regulated retail tariffs. The ongoing US-Israel-Iran conflict remains a key risk factor for European gas and global oil markets. The quarterly resetting of the cap provides a transparent mechanism for monitoring the lagged impact of wholesale volatility on end-user prices. The reduction in typical consumption estimates also highlights demand-side elasticity, which may influence longer-term demand forecasts for gas and electricity generation fuels.
Sources:
