Overview

• Cornwall Insight’s final projection puts the typical annual dual‑fuel bill at £1,737 for October to December 2025, a 1% rise from £1,720.
• Ofgem is due to announce the official cap level on 27 August, and the cap limits unit prices rather than total household bills.
• The Warm Home Discount expansion is estimated to add about £15 to a typical bill while providing £150 support to 2.7 million additional people.
• The new prediction reverses Cornwall Insight’s July view of a fall, with consultants citing volatile wholesale markets and geopolitical uncertainty despite lower recent prices.
• A small reduction in January remains possible, though Cornwall Insight says it depends on geopolitics, weather and future policy costs.