Southern
Energy Prices in Portsmouth 2026
A typical Portsmouth household pays around £142 per month for gas and electricity — £1 above the UK average of £141. Below: costs by property type, how Portsmouth compares and how to find a better deal.
Average monthly bill
£142
Estimated annual cost
£1,704
Estimated saving
£266/yr
Average energy costs by property type
| Property | Monthly | Annual |
|---|---|---|
| Flat / 1-bed | £92 | £1,104 |
| Terrace / 2-bed | £121 | £1,452 |
| Semi / 3-bed | £142 | £1,704 |
| Detached / 4+ bed | £192 | £2,304 |
How Portsmouth compares
Portsmouth reflects typical Southern region pricing.
Are you overpaying?
If your monthly bill is more than £156 for a similar-sized property, you may be paying above the typical Portsmouth range. Use our 30-second checker to see how much you could save.
Finding the best deal in Portsmouth
- Check your current rate — look at the unit rate (p/kWh) and standing charge on your latest bill.
- Compare fixed vs variable — fixed deals lock in your price, variable follow the price cap.
- Look at the whole price, not just the headline rate. Standing charges add up.
- Watch exit fees — typically £30–£60 per fuel for fixed tariffs.
- Switch online — the process takes about 5 days and your supply is never interrupted.