Whilst the most prominent price rises in 2018 have been from the big six, 19 energy suppliers have issued 21 price rises in total this year.
These price rises are set to affect 11 million households by an average of £52, adding £590 million to the nation’s energy bills.
Challenger energy brands have been issuing price rises yet, due to lower customer numbers, haven't had the same level of media coverage as the big six.
2018 has already seen price increases from suppliers such as First Utility (5.3%), OVO (4.8%) and Utility Warehouse (4.4%).
Collectively, the price rises from non-big-six suppliers affect more than 700,000 customers, adding a further £36 million to bills across Britain.
Small energy supplier Bulb is one of two suppliers to have already issued more than one price rise in 2018.
Do what the price cap won't - fix your energy costs today
Rik Smith, energy expert at Uswitch, believes that all standard variable tariffs will be affected at some point this year, and some suppliers may even follow Bulb and E.on's lead:
"Price rises have been affecting customers of both large and small energy suppliers large since the tail end of 2017 and unfortunately there seems to be no end in sight.
"I wouldn’t be surprised if we see a price rise from every energy supplier before the end of the year and maybe a second price rise from a few more - wholesale prices have simply skyrocketed over the past few months."
"With more price rises, more households are switching away to better tariffs, forcing suppliers to continue to compete by offering cheaper fixed deals," Smith says.
"Now is the time to lock in as cheap a deal as possible and protect yourself against rising wholesale costs. Whether you’re with a big brand name or small challenger supplier it’s definitely worth checking your bill to make sure you haven’t rolled onto a standard tariff.
"This is even more important with a price cap due to come into force later this year, potentially lulling people into a false sense of security that they are on a good deal when in fact they are still on a poor value standard variable or “temporary” tariff."
Eleven million households will be affected by these price rises because they are on Standard Variable Tariffs, which act as a supplier's default tariff. Fixed energy deals are not affected by price rises.
The average standard variable energy tariff is now a whopping £1,062, which is £205 more expensive than the cheapest deal on the wider market.
Supplier | SVT Tariff Name | Previous SVT price | New SVT price | Difference | Comes into effect from: | |
Ebico | Ebico Zero | £1,101 | £1,161 | £60 | 5.5% | 16th January |
Octopus Energy* | Flexible Octopus | £908 | £931 | £23 | 2.5% | 15th February |
iSupply | iVariable | £1,014 | £1,090 | £76 | 7.5% | 1st March |
Pure Planet** | 100% Green | £860 | £872 | £12 | 1.4% | 31st March, 1st May |
ENGIE | Safe And Easy | £980 | £1,038 | £58 | 5.9% | 4th April |
Our Power | Our Best | £848 | £939 | £91 | 10.7% | 4th April |
Ecotricity | Green Electricity + Green Gas | £1,201 | £1,258 | £58 | 4.8% | 14th April |
Igloo Energy | IGLOO PIONEER | £845 | £871 | £26 | 3.1% | 16th April |
E.ON*** | E.ON Energy Plan | £1,123 | £1,153 | £30 | 2.7% | 19th April |
Bulb | Vari-Fair | £855 | £878 | £24 | 2.8% | 28th April |
British Gas | British Gas Standard Variable Tariff | £1,101 | £1,161 | £60 | 5.5% | 29th May |
Scottish Power | Standard | £1,147 | £1,211 | £64 | 5.6% | 1st June |
EDF Energy | Standard (Variable) | £1,142 | £1,158 | £16 | 1.4% | 7th June |
Ovo**** | Simpler Energy | £1,097 | £1,150 | £53 | 4.8% | 8th June |
npower | Standard SC | £1,166 | £1,230 | £64 | 5.5% | 17th June |
First utility | First Variable | £1,131 | £1,191 | £60 | 5.3% | 23rd July |
Utility Warehouse | Vaue | £1,125 | £1,175 | £50 | 4.4% | 1st July |
SSE | Standard | £1,1089 | £1,196 | £87 | 7.9% | 11th July |
Bulb | Vari-Fair | £878 | £923 | £45 | 5.1% | 12th August |
E.ON | E.ON Energy Plan | £1,153 | £1,208 | £55 | 4.8% | 16th August |
Bristol Energy | Standard Variable | £997 | £1,079 | £82 | 8.2% | 9th September |
Average | £1,037 | £1,089 | £52 | 5% |
Do what the price cap won't - fix your energy costs today
Source: Uswitch data, correct as of 26 June. Prices based on average annual usage for a dual-fuel tariff, paying by monthly direct debit. *Existing SVT customers would have no price change, new SVT customers would receive the higher tariff Pure Planet issued two price changes, a price rise and price cut, the table gives the net outcome *E.On price change represents removal of £15 per fuel online discounts. ****OVO’s white label suppliers also raised their prices, due to regional variations the price rise will differ per region. Details available upon request.