What is 1p per kWh worth?
A penny sounds trivial until you multiply it by a year of usage. This converts a rate difference into money.
kWh a year
p/kWh
1p per kWh is worth
£27.00
a year at your usage
A 1p per kWh difference changes your bill by about £27.00 a year, or £2.25 a month. Standing charges are separate: compare both parts before deciding a tariff is cheaper. The GB average electricity unit rate is currently 26.11p per kWh.
Source: Ofgem · Period: 1 July to 30 September 2026 · Last updated: 2026-09-13
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Rules of thumb
At 2,700 kWh of electricity a year, 1p per kWh is £27. At 11,500 kWh of gas, the same penny is £115. That is why a small-looking gas rate difference usually matters more than the same difference on electricity.
Common questions
Is a 1p difference worth switching for?
Only your own numbers can say. Work out the pounds here, then weigh it against any exit fee.
Does the standing charge change this?
Yes, and it is separate. The break-even calculator handles both at once.
See whether you could pay less
Your results above are based on official Ofgem figures and your own numbers. Switching is optional and nothing here changes what the calculation says.
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