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Energy companies advice guides

Which? energy company reviews reveal the best and worst suppliers based on feedback from their customers, plus our expert verdict on their procedures, practices around customer service and complaints and pricing.

6 articles

Best and worst energy companies

See which energy companies came top of our annual customer satisfaction survey.

Energy company reviews

We've surveyed thousands of energy customers about their provider. Find out which ones you can rely on and which offer poor customer service in our energy company reviews.

Green energy suppliers

Which? explains the renewable energy sources we use in the UK, including solar energy and wind turbines

FAQs on energy price rises

Answers to some of Which? members' most common questions, including what to do if you can’t keep up with your bills.

30 June 2022

Northern Ireland electricity and gas

Find out which energy companies came top in Northern Ireland in our annual customer satisfaction survey.

30 June 2022

Small energy companies

Find out more about small, independent energy firms. Should you switch to a small energy company?