Eddie PhilipsChoosing the best energy supplier in the UK can be challenging, especially with frequent changes in tariffs, renewable-energy innovations, and supplier performance. This comprehensive guide breaks down the top 30 energy suppliers in the UK, analysing their pricing structure, renewable energy offering, customer service, market reputation, and what makes each stand out.
This blogpost is ideal for readers researching the best companies for electricity, gas, or dual-fuel plans—ensuring clarity, updated insights, and easy comparison.
Top 30 Energy Suppliers in the UK
1. British Gas
British Gas remains the UK’s largest and one of the most established energy suppliers. With decades of experience, the company offers a wide range of tariffs including fixed, variable, smart-meter-based, and electric-vehicle (EV) friendly options. British Gas customers enjoy broad customer support availability, boiler service packages, and exclusive rewards. While it may not always be the cheapest supplier, its reliability, nationwide coverage, and extensive service offering make it a preferred choice for many households.
2. EDF Energy
EDF Energy is one of the UK’s leading suppliers with strong French energy backing. Known for its commitment to nuclear and renewable sources, EDF provides competitive tariffs, especially for low-carbon and green-energy enthusiasts. Their customer service ratings are stable, and the brand strongly promotes sustainability and innovative smart home solutions. EDF’s fixed-rate plans often appeal to consumers seeking price stability.
3. E.ON Next
E.ON Next is the revamped, customer-friendly brand of E.ON. It combines the infrastructure strength of a major supplier with the personalised approach of smaller firms. E.ON Next offers 100% renewable electricity for domestic customers and flexible tariffs geared towards smart-meter users. The company has significantly improved its online support and digital tools for energy management.
4. Scottish Power
Scottish Power is a major UK supplier heavily invested in renewable energy through its parent group, Iberdrola. It offers competitive tariffs, smart meter incentives, and EV-oriented plans. Known for its green initiatives, Scottish Power appeals to environmentally-conscious consumers who value transparency in carbon-neutral electricity generation.
5. Octopus Energy
Octopus Energy has rapidly become one of the UK’s favourite suppliers thanks to its award-winning customer service, fair pricing, and innovative energy tech. The company is widely recognised for its user-friendly app, 100% renewable electricity, and unique tariffs such as Agile, Go, and Intelligent Octopus for EV users. Its transparent billing and high Trustpilot ratings make it a standout in the UK market.
6. OVO Energy
OVO Energy is another customer-centric supplier focused heavily on renewable energy. They offer 100% renewable electricity as standard and carbon-offset gas options. OVO provides home energy storage solutions and smart meter programmes designed to help consumers optimise their energy usage. Their simplified green tariffs and rewards for energy efficiency set them apart.
7. Shell Energy
Shell Energy supplies 100% renewable electricity and offers broadband bundles, making it an attractive choice for households seeking combined services. Customers benefit from rewards through the Shell Go+ loyalty programme, and the company offers stable pricing alongside digital management tools. Their plans also include useful technology add-ons such as smart home devices.
8. Bulb (Now Part of Octopus Energy)
Bulb was once one of the fastest-growing UK energy suppliers, known for renewable tariffs and simple monthly billing. Although it has since been absorbed into Octopus Energy, many former Bulb customers still enjoy competitive tariffs backed by Octopus’ strong service. Bulb’s legacy remains in its simplicity, green focus, and customer transparency.
9. SSE Energy
Formerly one of the UK’s “Big Six,” SSE now supplies gas and electricity through OVO Energy while still being recognised for reliable infrastructure and long-running customer trust. SSE offers competitive tariffs, robust engineering capabilities, and strong smart-meter adoption. Many customers appreciate its clear billing and dependable service.
10. Co-operative Energy
Now powered by Octopus Energy, Co-operative Energy maintains its ethical-values-driven approach by focusing on fairness and transparency. Customers can expect green energy tariffs, community energy options, and straightforward pricing. The company is a favourite among those prioritising sustainable and ethical business operations.
11. Good Energy
Good Energy is a premium green-energy supplier dedicated to sourcing 100% renewable electricity directly from UK wind, solar, and hydro power generators. Although slightly more expensive than some competitors, Good Energy stands out for its genuine environmental credentials and commitment to supporting clean-energy producers. It is ideal for eco-conscious households.
12. Ecotricity
Another specialist in green energy, Ecotricity is well-known for pioneering sustainable electricity in the UK. The supplier invests heavily in clean energy projects like wind farms and sustainable farming. Ecotricity’s tariffs focus on ethical production over low-cost plans, making it appealing to consumers prioritising environmental impact over budget energy deals.
13. So Energy
So Energy offers simple, affordable tariffs with a strong emphasis on renewable electricity. It provides a pick-your-source renewable model, allowing customers to choose the origin of their green electricity. The supplier is appreciated for its no-nonsense billing and easy-to-use digital tools.
14. Outfox the Market
Outfox the Market is known for offering some of the most competitively priced tariffs in the UK. Despite its aggressive pricing, it still provides 100% renewable electricity and decent customer service. Budget-conscious households often choose Outfox for its low fixed-rate options.
15. Utility Warehouse
Utility Warehouse (UW) is a unique energy supplier offering bundle packages including electricity, gas, broadband, mobile, and insurance. Customers benefit from significant discounts when combining services. Its cashback card and loyalty rewards programmes add value, especially for multi-service subscribers.
16. PFP Energy
PFP Energy supplies low-cost energy tariffs with a focus on simplicity. While its customer service record fluctuates, the supplier often appeals to consumers looking for straightforward budget tariffs without complex conditions.
17. Green Network Energy (Brand Legacy)
Although no longer active as a standalone firm, Green Network Energy’s tariffs and customer base helped shape competitive renewable options in the UK. The brand’s influence remains historically significant in green-energy pricing.
18. Zebra Power
Zebra Power offers straightforward tariffs and a simple digital experience. While smaller than major competitors, the supplier prioritises transparent billing and low variable-rate deals. Its customer base values predictability and affordability.
19. Neon Reef
Neon Reef provided competitively priced green electricity tariffs known for simplicity. Though folded into other suppliers, the brand’s approach to low-cost renewable energy still influences market competitiveness.
20. Together Energy (Legacy Brand)
Together Energy once offered low-cost tariffs and employed many community-focused initiatives. While the brand has exited the market, its impact on competitive pricing continues to play a role in supplier structure today.
21. E Energy
E Energy specialises in serving prepayment meter customers, offering simple tariffs and nationwide coverage. It is a practical choice for those managing pay-as-you-go energy or wanting easy top-up options.
22. Boost Energy
Boost Energy, part of OVO Group, focuses on PAYG (pay-as-you-go) energy solutions. Boost’s app, flexible top-ups, and prepayment-friendly tariffs appeal to households needing an easy-to-manage energy structure.
23. People’s Energy (Legacy Influence)
People’s Energy was known for its customer-ownership model and transparent pricing. Though no longer operating, its legacy in community-driven energy supply is still referenced in sustainability debates.
24. Atlantic Energy (Part of SSE/OVO Legacy)
Atlantic Energy customers now fall under SSE/OVO, but the brand formerly offered competitive fixed-rate plans and strong customer support. Its historical role shaped modern UK energy transitions.
25. Bristol Energy (Heritage Brand)
Bristol Energy previously focused on ethical tariffs and community energy projects. While now taken over by Together Energy’s portfolio, its community-level approach still influences local energy schemes.
26. Engie UK
Engie supplies energy to both businesses and residential customers, though its business energy arm is more dominant. Its focus on clean technology, energy efficiency, and commercial solutions makes it a notable player in the corporate energy sector.
27. Flogas
Flogas supplies off-grid gas (LPG) and has expanded into electricity supply. It is ideal for rural households or commercial customers using LPG heating. Their service reliability and flexible pricing make them a trusted off-grid provider.
28. ESB Energy
ESB Energy provides competitively priced green electricity and is backed by Ireland’s powerful ESB Group. Known for great customer service and affordable fixed tariffs, ESB Energy continues to grow across the UK.
29. SP Energy Networks (Grid Operator with Influence)
Though primarily a network operator, SP Energy Networks plays a significant role in UK electricity distribution. Its innovations in smart grids support broader supplier performance, making it relevant in energy-sector discussions.
30. Northumbria Energy
Northumbria Energy is a small but growing supplier offering simple, low-cost energy plans. With competitive fixed tariffs and minimal fees, it appeals to households looking for predictable, no-frills energy supply.
Conclusion
The UK energy market features a wide range of suppliers—from major national companies to smaller green-focused brands. Whether you prioritise renewable energy, cost savings, customer service, or technological innovation, there is a supplier that fits your needs.