Best and worst energy companies
Frustrated with your energy firm? Find out what thousands of energy customers think of their suppliers. Use our research to choose the best gas and electricity company for you.
19 July 2021
Energy companies advice guides
5 articles
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.
Green energy suppliers
Find out about different types of green energy and what you're getting when you buy electricity from different renewable energy companies
18 July 2021
Northern Ireland electricity and gas
Find the best Northern Ireland electricity and gas energy firm for you, based on the opinions of hundreds of Northern Ireland electricity and gas customers.
16 July 2021
Small energy companies
There are more than 50 energy companies, including a raft of small suppliers. We explain the pros and cons of choosing small gas and electricity companies.
12 July 2021