Cheapest energy suppliers right now in the UK! (2025)

Last updated: 21st March 2025

As winter tightens its grip and temperatures drop across the UK, many households are bracing for higher energy bills. We’ve looked at the cheapest energy suppliers right now in March 2025, so you can see if you can save by switching.

With heating systems working overtime to combat the chill, the search for the cheapest energy supplier has never been more urgent. Adding to the challenge, Ofgem has announced a 6.4% increase in the energy price cap that will take effect on 1st April 2025, pushing costs even higher for millions of consumers, with the average bill expected to rise by £111 per year.

Table of Contents

Keep reading to find the cheapest energy providers available right now and see if you can find a better deal than your current energy supplier.

Octopus Energy are currently the cheapest big-name supplier.

You can now get £50 credit, too, when you sign up to them using our special link.

Click here to get £50 credit when you sign up to Octopus

Who is the cheapest energy supplier in the UK now? (March 2025)

Octopus Energy is currently the cheapest supplier in 2025 for most users, offering both the cheapest fixed tariff and cheapest variable tariff available. However, these tariffs are only the cheapest if you include the £50 referral credit you can receive.

Without the £50 credit, Tulo Energy offer the cheapest variable tariff and Outfox The Market offer the cheapest fixed tariff*.

Below we’ve summarised each of the cheapest energy suppliers:

Octopus Energy

Octopus Energy is a rapidly growing supplier renowned for excellent customer service and innovative, tech-driven solutions. Their ‘Octopus 14M Fixed January 2025 v1’ tariff is a 12-month fixed-rate plan with an estimated monthly cost of £143 and no early exit fees.

The company is committed to sustainability, offering 100% renewable electricity. Octopus Energy also provides a unique ‘Tracker’ tariff, which is often cheaper than the tariffs available from any other suppliers.

Octopus Energy has a Trustpilot rating of 4.8 out of 5, based on over 469,000 reviews.

Tulo Energy

Tulo Energy is a relatively new or small energy provider offering the ‘Vari-One’ tariff – a variable monthly rolling contract with no early exit fees. With an estimated monthly cost of £139, it’s among the more affordable options currently available.

However, due to its recent market entry, there is limited customer feedback to assess its service quality. As of now, Tulo Energy only has 150 Trustpilot reviews, but they do have a rating of 4.5 out of 5.

OVO Energy

OVO Energy is one of the UK’s leading independent energy suppliers, known for its commitment to renewable energy and customer-centric services.

They offer the ‘Extended Fixed 09 January 2025’ tariff, a 18-month fixed-rate plan with an estimated monthly cost of £136. The tariff has an early exit fee of £150.

OVO Energy holds a Trustpilot rating of 4.2 out of 5, based on over 195,000 reviews.

Utility Warehouse

Utility Warehouse offers a unique approach by bundling energy services with other utilities like broadband and mobile contracts.

Their ‘UW Fixed 36’ tariff is a fixed-rate plan until 31 Dec 2025, with an estimated monthly cost of £142. To benefit from this tariff at the stated price, customers must subscribe to at least two other services from Utility Warehouse, which may not always be competitively priced. The tariff comes with an early exit fee of £150.

Utility Warehouse boasts a Trustpilot rating of 4.4 out of 5, based on over 58,000 reviews.

British Gas

British Gas is the UK’s largest energy supplier with a long-standing history. They offer the ‘Fixed Tariff v21’, an 12-month fixed-term contract with an estimated monthly cost of £140. The tariff includes an early exit fee of £100.

The company has a Trustpilot rating of 4.2 out of 5, based on over 260,000 reviews.

Outfox The Market

Outfox The Market is a smaller energy supplier known for competitive pricing. Their ‘Fix’d Dual Jan25 v1.0’ tariff is a 12-month fixed-rate plan with an estimated monthly cost of £140 and an early exit fee of £50. They also offer longer fixed-term tariffs with varying exit fees.

Outfox The Market holds a Trustpilot rating of 4.6 out of 5, based on over 40,000 reviews.

EDF Energy

EDF Energy is part of the global EDF Group and is one of the UK’s major energy suppliers. They offer the ‘Simply Fixed 2Yr Jan27v4’ tariff, a fixed-rate plan until 31 January 2027, with an estimated monthly cost of £141. The tariff has an early exit fee of £150. EDF Energy provides green electricity options but not green gas.

EDF Energy has a Trustpilot rating of 4.7 out of 5, based on over 114,000 reviews.

E.ON Next

E.ON Next is the consumer brand of E.ON UK, focusing on renewable energy solutions and customer service. They offer several fixed-rate tariffs like ‘Next Fixed 18m v15’ and ‘Next Fixed 12m v42’, with estimated monthly costs of £141 and £133 respectively. Both tariffs have an early exit fee of £100.

The company holds a Trustpilot rating of 4.5 out of 5, based on over 142,000 reviews.

Get £50 when you join Octopus Energy by clicking here

Cheapest suppliers in the UK right now (Gas and Electricity)

This table lists the cheapest energy suppliers in the UK that are currently available in March 2025. It provides a comparison of rates and tariffs to help you find the most affordable energy suppliers.

As a quick summary for the cheapest suppliers right now:

Octopus Energy are the cheapest supplier for both fixed and variable tariffs if you include the £50 sign-up credit at £1,667 per year (or £139 per month). Click here to get £50 credit when you sign up to Octopus.
Tulo Energy offer the cheapest variable tariff at £1,668 per year (or £139 per month)
Outfox The Market offer the cheapest fixed tariff at £1,684 per year (or £140 per month)

Supplier Name	Tariff Name	Tariff Type	Tariff Length	Cost Per Month	Cost Per Year	Early Exit Fee
Octopus Energy	Octopus 14M Fixed	Fixed	14 months	£139	£1,667	£0
Tulo Energy	Vari-One	Variable	No End Date	£139	£1,668	£0
Outfox The Market	Fix’d Dual	Fixed	12 months	£140	£1,684	£50
ScottishPower	Help Beat Cancer Flexi	Variable	No End Date	£140	£1,685	£0
British Gas	Fixed Tariff	Fixed	12 months	£140	£1,686	£100
E.ON Next	Next Fixed 18m	Fixed	18 months	£141	£1,687	£100
Outfox The Market	18 – Month Fix’d Dual	Fixed	18 months	£141	£1,687	£50
EDF Energy	Simply Fixed 2Yr	Fixed	until 31 Jan 2027	£141	£1,688	£150
EDF Energy	Simply Fixed Direct 1Yr	Fixed	until 31 Jan 2026	£141	£1,691	£0
EDF Energy	Simply Fixed 1Yr	Fixed	until 31 Jan 2026	£141	£1,691	£50
Utility Warehouse	UW Fixed 36	Fixed	until 31 Dec 2025	£142	£1,699	£150
Octopus Energy	Flexible Octopus	Variable	No End Date	£141	£1,700	£0
Outfox The Market	2-year Fix’d Dual	Fixed	24 months	£142	£1,701	£140
So Energy	So Wisteria Two Year – Green	Fixed	24 months	£142	£1,708	£150
British Gas	The Longer Fix v18	Fixed	24 months	£143	£1,711	£150
E.ON Next	Next Pledge Tracker 12m	Variable	No End Date	£143	£1,712	£0
EDF Energy	Simply Tracker	Variable	No End Date	£143	£1,715	£0
Utility Warehouse	Double Gold	Variable	No End Date	£143	£1,715	£0
Co-op Energy	Co-op 14M Fixed	Fixed	14 months	£143	£1,717	£0
Sainsbury’s Energy	Sainsburys Fix and Reward Fixed 18M	Fixed	18 months	£143	£1,718	£100
E.ON Next	Next Fixed 12m	Fixed	12 months	£143	£1,720	£100
Sainsbury’s Energy	Sainsburys Fix and Reward Fixed 12m	Fixed	12 months	£145	£1,739	£100
E.ON Next	Next Gust 12m	Fixed	12 months	£145	£1,741	£100
Tulo Energy	SVT	Variable	No End Date	£145	£1,743	£0
Utility Warehouse	Gold	Variable	No End Date	£145	£1,745	£0
OVO Energy	Extended Fixed	Fixed	18 months	£146	£1,747	£150
So Energy	So Wisteria One Year – Green	Fixed	12 months	£146	£1,752	£100
OVO Energy	1 Year Fixed	Fixed	12 months	£146	£1,754	£100
So Energy	So Flex	Variable	No End Date	£147	£1,763	£0
Ebico	Ebico Standard	Variable	No End Date	£147	£1,764	£0
OVO Energy	Simpler Energy	Variable	No End Date	£147	£1,764	£0
Good Energy	Good Energy Standard	Variable	No End Date	£147	£1,764	£0
Good Energy	Good Energy Deemed DD	Variable	No End Date	£147	£1,764	£0
Utility Warehouse	Value	Variable	No End Date	£147	£1,764	£0
E.ON Next	Next Fixed	Fixed	24 months	£147	£1,765	£200
Utilita	Smart Energy	Variable	No End Date	£147	£1,765	£0
ScottishPower	Standard	Variable	No End Date	£147	£1,765	£0
British Gas	Standard Variable	Variable	No End Date	£147	£1,765	£0
EDF Energy	Standard (Variable)	Variable	No End Date	£147	£1,765	£0
Sainsbury’s Energy	Sainsbury’ Standard Variable	Variable	No End Date	£147	£1,765	£0
Sainsbury’s Energy	Sainsburys Track and Reward	Variable	No End Date	£147	£1,765	£0
Outfox The Market	Fox Standard Dual	Variable	No End Date	£147	£1,765	£0
Home Energy	Fair Variable Dual	Variable	No End Date	£147	£1,765	£0
Sainsbury’s Energy	Sainsburys Fix and Reward Fixed 24M	Fixed	24 months	£149	£1,784	£200
Co-op Energy	Co-op Community Power 14M Fixed	Fixed	14 months	£149	£1,785	£0
OVO Energy	2 Year Fixed + Heating Control	Fixed	24 months	£151	£1,807	£190
Ebico	Ebico Prime 12	Fixed	12 months	£152	£1,826	£100
OVO Energy	1 Year Fixed + Greener Electricity	Fixed	12 months	£153	£1,834	£100
100Green	Sparkling SVT	Variable	No End Date	£166	£1,987	£0
Ebico	Ebico Signature	Fixed	12 months	£167	£2,000	£100
100Green	Sparkling Fixed	Fixed	until 31 Dec 2025	£168	£2,016	£0
100Green	Eko Energy	Fixed	until 31 Mar 2025	£171	£2,058	£0
Ecotricity	Standard Variable Green Tariff	Variable	No End Date	£173	£2,080	£0

*We have used the usage data for an average 3-bed house in the East Midlands. Please get a quote from the energy supplier to see if they are cheaper for you, as prices vary depending on location and usage.

Price cap rates for March 2025

Below are the new average rates from 1st January based on the new price cap pricing from Ofgem:

Electricity Unit Rate: 24.86p/kWh
Daily Electricity Standing Charge: 60.97p/day
Gas Unit Rate: 6.34p/kW
Daily Gas Standing Charge: 31.65p/day

A couple looking at their bills and trying to work out the cheapest energy suppliers

Tips for Securing the Best Energy Deal

1. Compare Regularly

Energy prices change frequently, so it’s essential to compare deals regularly. Websites like Uswitch, Compare the Market, and MoneySuperMarket make this process straightforward by showing you a range of options based on your postcode and usage.

2. Consider Your Usage Patterns

Some tariffs are more beneficial depending on your usage patterns. For instance, if you use more energy during off-peak hours, a time-of-use tariff like Octopus Agile could save you money. Conversely, if your usage is consistent, a fixed-rate plan might be more suitable.

3. Check for Exit Fees

Some energy plans come with exit fees, which can make switching more expensive. Always check the terms and conditions of your current and potential new plan to ensure you won’t be hit with unexpected costs.

4. Look for Incentives and Rewards

Many energy companies offer incentives to new customers, such as cashback or bill credits. These can provide additional savings and make a new plan even more attractive.

5. Consider Green Energy

While price is important, considering the environmental impact of your energy usage is also crucial. Many of the cheapest energy deals now come from suppliers offering 100% renewable electricity, allowing you to save money and reduce your carbon footprint.

Final thoughts

Switching energy suppliers might seem like a hassle, but the potential savings make it well worth the effort. The current market offers a range of options, from flexible, variable tariffs to stable, fixed-rate plans, so there’s something to suit every household’s needs.

As we head into the summer months, now is the perfect time to review your energy usage and make the switch to a more cost-effective plan. Keep an eye on the market, use comparison tools, and don’t be afraid to make a change. Your wallet will thank you.