Cheapest Fixed Energy Tariffs in the UK (September 2026)
Fuse Energy’s August 2026 Fixed (18m) V15 is the lowest-priced qualifying September tariff at £1,489 a year.
Overview
Quick Summary
36 tariffs from 14 suppliers met the common September 2026 filters. Fuse Energy’s August 2026 Fixed (18m) V15 ranked first at £1,489 a year (£124 a month). Prices are estimates for the stated usage, region and payment method, not personalised quotes.
Top tariffs this month
- #1 BEST VALUEFuse EnergyAugust 2026 Fixed (18m) V15£124/mo£1,489 / year18-month term · exit fee £100
- #2Fuse EnergyAugust 2026 Fixed (24m) V1£124/mo£1,490 / year24-month term · exit fee £100
- #3E.ON NextNext Fixed 24m Exclusive v11£126/mo£1,510 / year24-month term · exit fee £200
#1 Fuse Energy — August 2026 Fixed (18m) V15: £1,489 a year (£124 a month), with 18-month term and £100 exit fee.
#2 Fuse Energy — August 2026 Fixed (24m) V1: £1,490 a year (£124 a month), with 24-month term and £100 exit fee.
#3 E.ON Next — Next Fixed 24m Exclusive v11: £1,510 a year (£126 a month), with 24-month term and £200 exit fee.
Supplier highlights
Fuse Energy
TOP PICKWho they are: Fuse Energy had 4 qualifying tariffs in this September comparison.
Why choose them: August 2026 Fixed (18m) V15 was its lowest-priced qualifying tariff at £1,489 a year (£124 a month), with 18-month term and £100 exit fee.
E.ON Next
Who they are: E.ON Next had 4 qualifying tariffs in this September comparison.
Why choose them: Next Fixed 24m Exclusive v11 was its lowest-priced qualifying tariff at £1,510 a year (£126 a month), with 24-month term and £200 exit fee.
Outfox Energy
Who they are: Outfox Energy had 6 qualifying tariffs in this September comparison.
Why choose them: Fix'd Dual Aug26 24M v1 - Family Advantage+ was its lowest-priced qualifying tariff at £1,516 a year (£126 a month), with 24-month term and £200 exit fee.
Ecotricity
Who they are: Ecotricity had 1 qualifying tariff in this September comparison.
Why choose them: EcoFixed - 2 Year August 26 v4 was its lowest-priced qualifying tariff at £1,559 a year (£130 a month), with 24-month term and £200 exit fee.
Utility Warehouse
Who they are: Utility Warehouse had 3 qualifying tariffs in this September comparison.
Why choose them: UW Fixed Saver 95 was its lowest-priced qualifying tariff at £1,595 a year (£133 a month), with 11-month term and £150 exit fee.
Sainsbury’s Energy
Who they are: Sainsbury’s Energy had 2 qualifying tariffs in this September comparison.
Why choose them: Sainsburys Fix and Reward Fixed 24m v51 was its lowest-priced qualifying tariff at £1,640 a year (£137 a month), with 24-month term and £200 exit fee.
Octopus Energy
Who they are: Octopus Energy had 1 qualifying tariff in this September comparison.
Why choose them: Octopus 12M Fixed August 2026 v6 was its lowest-priced qualifying tariff at £1,642 a year (£137 a month), with 12-month term and £100 exit fee.
Pricing data is from uSwitch.
British Gas
Who they are: British Gas had 3 qualifying tariffs in this September comparison.
Why choose them: Fix and Boiler Bonus v14 was its lowest-priced qualifying tariff at £1,649 a year (£137 a month), with 21-month term and £200 exit fee.
EDF Energy
Who they are: EDF Energy had 2 qualifying tariffs in this September comparison.
Why choose them: Simply Fixed 2Yr Sep28v4 was its lowest-priced qualifying tariff at £1,691 a year (£141 a month), with 24-month term and £200 exit fee.
100Green
Who they are: 100Green had 1 qualifying tariff in this September comparison.
Why choose them: Exclusive Spring 100% Green 12M September 27 was its lowest-priced qualifying tariff at £1,717 a year (£143 a month), with 12-month term and no exit fee.
Good Energy
Who they are: Good Energy had 1 qualifying tariff in this September comparison.
Why choose them: Good Energy 12m Fix Aug26 was its lowest-priced qualifying tariff at £1,724 a year (£144 a month), with 12-month term and £150 exit fee.
So Energy
Who they are: So Energy had 3 qualifying tariffs in this September comparison.
Why choose them: So Kestrel 18m was its lowest-priced qualifying tariff at £1,735 a year (£145 a month), with 18-month term and £190 exit fee.
OVO Energy
Who they are: OVO Energy had 3 qualifying tariffs in this September comparison.
Why choose them: 1 Year Fixed + Boiler Cover 27 August 2026 was its lowest-priced qualifying tariff at £1,742 a year (£145 a month), with 12-month term and £100 exit fee.
Scottish Power
Who they are: Scottish Power had 2 qualifying tariffs in this September comparison.
Why choose them: Exclusive Help Beat Cancer Fixed Sep 2027 SM2 was its lowest-priced qualifying tariff at £1,830 a year (£152 a month), with 12-month term and no exit fee.
Methodology
This page ranks fixed tariffs only by estimated annual cost, lowest first. Tariff type, contract term and exit fee are kept as separate facts: a tracker or variable tariff can still have a term or an exit fee. All price figures use a representative East Midlands postcode, Monthly Direct Debit and the stated Ofgem medium-use assumptions. Electricity-only, gas-only and dual-fuel rows may appear; readers should compare like with like and obtain a personalised quote before switching.
All tariffs (36)
All 36 tariffs ranked by annual cost.
| # | Supplier | Tariff | Annual | Term | Exit |
|---|---|---|---|---|---|
| ★ 1 | Fuse Energy | August 2026 Fixed (18m) V15 | £1,489 | 18mo | £100 |
| 2 | Fuse Energy | August 2026 Fixed (24m) V1 | £1,490 | 24mo | £100 |
| 3 | E.ON Next | Next Fixed 24m Exclusive v11 | £1,510 | 24mo | £200 |
| 4 | Outfox Energy | Fix'd Dual Aug26 24M v1 - Family Advantage+ | £1,516 | 24mo | £200 |
| 5 | Outfox Energy | Fix'd Dual Aug26 18M v1 - Family Advantage+ | £1,516 | 18mo | £150 |
| 6 | Ecotricity | EcoFixed - 2 Year August 26 v4 | £1,559 | 24mo | £200 |
| 7 | E.ON Next | Next Fixed 24m v65 | £1,566 | 24mo | £200 |
| 8 | Utility Warehouse | UW Fixed Saver 95 | £1,595 | 11mo | £150 |
| 9 | Sainsbury’s Energy | Sainsburys Fix and Reward Fixed 24m v51 | £1,640 | 24mo | £200 |
| 10 | Utility Warehouse | UW Fixed 95 | £1,640 | 11mo | £150 |
| 11 | Octopus Energy | Octopus 12M Fixed August 2026 v6 | £1,642 | 12mo | £100 |
| 12 | British Gas | Fix and Boiler Bonus v14 | £1,649 | 21mo | £200 |
| 13 | British Gas | Fixed Exclusive Jun28 v1 | £1,649 | 21mo | £200 |
| 14 | Sainsbury’s Energy | Sainsbury's Energy Fix and Save 24m v3 | £1,649 | 24mo | £200 |
| 15 | E.ON Next | Next Fixed 12m v151 | £1,651 | 12mo | £100 |
| 16 | Outfox Energy | Fix'd Dual Aug26 12M v6 | £1,653 | 12mo | £150 |
| 17 | Outfox Energy | Fix'd Dual Aug26 18M v6 | £1,653 | 18mo | £150 |
| 18 | Outfox Energy | Fix'd Dual Aug26 24M v8 | £1,653 | 24mo | £200 |
| 19 | Fuse Energy | August 2026 Fixed (13m) V21 | £1,655 | 13mo | £100 |
| 20 | Outfox Energy | Fix'd Dual Aug26 12M v10 - Family Advantage+ | £1,673 | 12mo | £150 |
| 21 | E.ON Next | Next Gust 12m v62 | £1,675 | 12mo | £100 |
| 22 | EDF Energy | Simply Fixed 2Yr Sep28v4 | £1,691 | 24mo | £200 |
| 23 | Fuse Energy | September 2026 Fixed (12m) V1 | £1,692 | 12mo | £100 |
| 24 | Utility Warehouse | UW Fixed Start 95 | £1,706 | 11mo | £150 |
| 25 | 100Green | Exclusive Spring 100% Green 12M September 27 | £1,717 | 12mo | None |
Use our referral link, and we'll both get £50 credit once your switch is complete.
Existing customer? Find out how you can benefit too. T&Cs apply (only one switching offer per household)
Our verdict
Fuse Energy’s August 2026 Fixed (18m) V15 is the lowest-priced qualifying tariff in this September comparison.
Its estimated cost is £1,489 a year (£124 a month) under the common assumptions, with 18-month term and £100 exit fee.
Price is only one consideration. Check the named tariff’s current availability, service type, term and exit fee, then obtain a personalised quote before switching.
Frequently asked questions
How is this page ranked?
Tariffs are ranked by estimated annual cost under one common set of assumptions. Only fixed tariffs qualify.
Are these personalised prices?
No. Prices use an East Midlands representative postcode, Monthly Direct Debit and Ofgem medium-use assumptions. Your quote can differ with location, usage, meter and eligibility.
Does a variable or tracker tariff always have no exit fee?
No. Tariff type, contract term and exit fee are separate. Check the named tariff’s term and exit fee before switching.
Why can rankings move sharply between months?
The monthly table is rebuilt from the qualifying evidence available for that month. A tariff entering, leaving or changing price, or a rating or service measure changing, can move a supplier or tariff several places.
What does missing data mean?
It means the relevant comparable figure was not present under this page’s filters. Missing values are not estimated; check the supplier directly for current availability and a personalised quote.
Written by
Rob Gibbs
Hi, I'm Rob, and I run Energy-Review.co.uk. I initially started this project in 2018 when I was looking to switch energy suppliers and found there wasn't a website that provided simple, data-backed reviews on all the suppliers available. Since then, I have spent a lot of time (too much, some may say!) looking at all publicly available data about each supplier and writing reviews using this information. These reviews are updated as regularly as possible, and any data is backed up by a source where necessary. I have also started writing guides on various energy-related topics, which hopefully you will find useful. If you find any issues, please use our contact form to let us know.
What changed this month
This month, total tariffs compared rose from 32 to 36, and cheapest annual cost rose from £1,448 to £1,489.
Data changes this month (2)
- Cheapest annual cost£1,448 → £1,489
- Total tariffs compared32 → 36
Related articles
Cheapest Energy Suppliers in the UK
63 tariffs from 16 suppliers met the common September 2026 filters. Home Energy’s Fair Variable Dual ranked first at £1,453 a year (£121 a month). Prices are estimates for the stated usage, region and payment method, not personalised quotes.
Read article →Best No-Exit-Fee Energy Suppliers in the UK
16 suppliers had qualifying evidence for September 2026. Suppliers are ordered using each supplier’s cheapest tariff with a £0 exit fee. The ranking is price-based: Home Energy had the lowest qualifying annual cost at £1,453.
Read article →Best Energy Supplier Apps in the UK
14 suppliers had qualifying evidence for September 2026. Suppliers are ordered using the mean of qualifying iOS App Store and Google Play ratings; each store rating needs at least 50 ratings, and one qualifying store is enough. Scottish Power ranked first at 95.3/100. Tariff prices are shown only as
Read article →Related guides
Which energy suppliers are going bust?
The UK energy market has seen massive upheaval over the past few years. During the peak of the energy crisis in 2021 and 2022, wholesale costs soared and caused dozens of suppliers to collapse. By July 2026, the market has largely stabilised. However, smaller companies still occasionally fail, and t
Read guide →
Who is cheaper than British Gas? (2026)
British Gas is one of the UK's largest energy suppliers, but staying on its default standard variable tariff is currently one of the most expensive ways to pay for your gas and electricity. Following a 13% rise in the Ofgem price cap on 1 July 2026, household energy bills have jumped again, driven b
Read guide →
How to Choose a Green Energy Supplier in the UK
Before comparing suppliers, it helps to know how they back up their green claims. When you sign up for a green tariff, the electricity flowing into your home is exactly the same as your neighbour's. All power mixes together in the National Grid. A green tariff simply means your supplier promises to
Read guide →