What dual fuel means
A dual fuel deal puts electricity and gas with the same supplier. You usually get one account, one provider relationship, and sometimes a bundled discount.
The trade-off is that one supplier must be competitive on both fuels. A strong electricity offer can be weakened by a less competitive gas rate, or the other way around.
How to compare dual fuel deals
Compare the annual electricity cost and annual gas cost separately first. Then compare the combined total with any dual fuel discount included.
Use your own usage where possible. A typical household estimate is helpful for a rough scan, but your heating system, insulation, household size, and work-from-home pattern can shift the result.
- Check electricity unit rate and standing charge.
- Check gas unit rate and standing charge.
- Confirm whether the discount applies to both fuels.
- Check whether both contracts renew on the same date.
When dual fuel works well
Dual fuel often works well for households that value simplicity and where the bundled annual cost is genuinely close to or below the best split-supplier result.
It is less attractive if the bundle hides a weak rate on one fuel or if one discount expires earlier than the other.
Useful sources
- CRU energy suppliers list
- CRU energy market monitoring
- ESB Networks smart meters