Swansea is a coastal Welsh city with tidal energy potential and a mix of terraced housing and waterfront developments.
Current Ofgem Price Cap
£1,641/year
April — June 2026 | Typical dual fuel household
Electricity
3,100 kWh
Gas
12,700 kWh
The following energy suppliers offer plans in the SA postcode area:
Comparing energy suppliers in Swansea takes just a few minutes. Enter your postcode and current usage or upload a recent energy bill to see how much you could save by switching to a different tariff.
All major suppliers compete for customers in the SA area, meaning there are often deals available below the Ofgem price cap of £1,641/year. Fixed-rate tariffs can lock in savings and protect against future price rises.
Based on typical consumption in the SA postcode area, the average household uses approximately 3,100 kWh of electricity and 12,700 kWh of gas per year.
At the current Ofgem price cap rate, this works out to around £1,641 per year for a dual fuel household. Your actual bill will depend on your property size, insulation, and heating habits.
The cheapest energy supplier in Swansea (SA) varies by usage and tariff type. Currently, suppliers like British Gas, Octopus Energy, EDF offer competitive rates in the SA postcode area. Use AskUKEnergy to compare the latest plans based on your actual usage.
The average annual energy bill in Swansea is approximately £1,641 based on the current Ofgem price cap. Typical annual usage is around 3,100 kWh of electricity and 12,700 kWh of gas.
Switching energy supplier in Swansea is straightforward. Compare plans using AskUKEnergy, choose a tariff, and your new supplier handles the switch. There is no interruption to your supply. The process typically takes 5 working days under the Ofgem switching guarantee.
Upload your bill to see how much you could save.
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Price cap data: Ofgem. Average usage: DESNZ.
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