SWALEC is part of SSE, which also operates as Atlantic Electric and Gas, Scottish Hydro, and Southern Electric.

SSE is a public listed company. The company is one of the largest suppliers of gas and electricity to homes in the UK, with 9.5 million customers.

SWALEC supplies homes in Wales and the Merseyside area.

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Swalec customer satisfaction survey results

Area of performance Star rating
Which? customer score
Customer service
Value for money
Helping you save energy

Swalec customer score

In September and October 2015 we surveyed 8,902 UK adults who pay for their household energy, about their experience with their gas and electricity suppliers.

The percentage customer satisfaction score is based on the responses consumers gave for both overall satisfaction and their likelihood to recommend the energy supplier to a friend. Both questions are given equal weighting, and only those giving a valid response to both questions are included in the analysis. The responses are analysed and scaled to give a rating from 0-100%.

For a full round-up of the Which? Switch energy satisfaction survey results, see our customer satisfaction survey results page.

SWALEC fuel mix disclosure

All energy suppliers have to provide information about the mix of fuels they use to generate energy supplied to gas and electricity customers and its environmental impact.


The fuel mix below reflects the year 1st April 2014 - 31st March 2015. These figures are officially updated published on the 1st October of each year.

SSE SWALEC fuel mix

Coal: 31%
Natural gas: 27%
Nuclear: 3%
Renewable*: 37%
Other: 2%
Radioactive waste calculations (grams per kWh): 0.00022623
Carbon (grams per kWh): 398
* Wind, hydro and solar power.

Contact Information

Customer services: 0800 34 34 36

Customers who have already requested to switch: 0800 052 5252

Contact Which? Switch by phone

You can call us on 0800 410 1149 or 01259 220 235.

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Energy Customer Satisfaction Results

Tired of poor customer service from your energy supplier? See how customers rated 25 of the UK's gas and electricity suppliers in 2016.

Latest tariff updates

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About Which? Switch

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