Last updated: 24 October 2026
The UK’s energy market has changed significantly in 2026. Rising wholesale gas costs, new household electricity tax rules, smart tariffs and a major supplier acquisition have reshaped how British households choose their gas and electricity providers.
Among the biggest changes, E.ON completed its acquisition of OVO Energy on 8 October 2026, bringing two major household suppliers under the same ownership. Meanwhile, Octopus Energy has strengthened its position in the market, and smaller suppliers are outperforming several established names on customer service.
For households comparing the top 10 energy companies in the UK, size is no longer the only useful measure. Customer support, billing accuracy, tariff flexibility and renewable-energy sourcing can make a substantial difference.
According to Ofgem, Great Britain had 17 active domestic energy suppliers in March 2026. The regulator’s price cap for October to December 2026 is £1,723 annually for a typical dual-fuel household paying by Direct Debit, up from £1,663 in the previous quarter.
This guide compares ten prominent and noteworthy UK energy supplier brands, examines independent customer-service ratings and explains which factors should matter most when choosing a provider.
Top 10 Energy Companies in the UK: 2026 Comparison
The following table combines major household suppliers with smaller providers that perform particularly well in independent service assessments.
| Energy company | Main strength or distinguishing feature | Citizens Advice score |
|---|---|---|
| Octopus Energy | Large market presence and smart tariffs | 3.67/5 |
| British Gas | Established brand and home-energy services | 2.61/5 |
| E.ON Next | Strong service score among major suppliers | 3.71/5 |
| OVO Energy | EV charging products and digital services | 3.65/5 |
| EDF Energy | Energy supply and electricity generation | 2.96/5 |
| ScottishPower | Major supplier with renewable-energy operations | 2.76/5 |
| Utility Warehouse | Bundled household services | 2.63/5 |
| Good Energy | Renewable-electricity sourcing | 3.68/5 |
| 100Green | Renewable electricity and green-gas options | 3.90/5 |
| Outfox Energy | Highest customer-service score in the latest assessment | 4.03/5 |
Source: Citizens Advice domestic energy supplier customer-service ratings, April–June 2026. Scores are out of five.
How Were These Companies Selected?
This is an editorial comparison of ten relevant household energy supplier brands, not a claim that these are the ten largest companies by turnover or market share. The selection considers market presence, distinctive products, consumer relevance and independently reported service performance.
The order introduces established suppliers first and specialist alternatives afterwards. It is not an overall best-to-worst ranking. E.ON Next and OVO remain separate consumer-facing brands but have shared ownership since October 2026.
The assessment focuses on domestic gas and electricity suppliers operating in Great Britain. Northern Ireland has separate energy market arrangements.
1. Octopus Energy
Octopus Energy has become one of Britain’s most influential household energy suppliers, challenging companies that dominated the market for decades.
In August 2026, Octopus reported that more than half a million households had switched to its service during the first seven months of the year. The company also reported supplying approximately 26% of the British domestic energy market.
That expansion is particularly important because Octopus was originally regarded as a challenger to traditional utilities rather than an established market leader.
What Makes Octopus Energy Different?
Octopus is particularly notable for its technology-led approach to electricity pricing.
Its Agile Octopus tariff links electricity prices to changing wholesale market conditions, with rates calculated in half-hour periods. This offers households an opportunity to reduce costs by moving energy-intensive activities away from expensive periods.
For example, a household with an electric vehicle, home battery or programmable appliances may be able to charge or operate them when electricity is cheaper.
However, dynamic tariffs also introduce risk. When wholesale prices rise sharply, customers can face unusually expensive half-hourly rates.
Octopus achieved 3.67 out of five in the Citizens Advice assessment for April–June 2026.
Assessment: A strong company to investigate for households interested in smart meters, flexible energy consumption and digital account management. Dynamic tariffs should be compared carefully against fixed-price alternatives.
2. British Gas
British Gas remains one of the UK’s most recognisable domestic energy brands and operates within Centrica.
Its long-standing position in the market gives it an established presence in household gas and electricity supply, alongside products and services associated with heating systems, boilers and home maintenance.
British Gas is particularly relevant to households considering energy supply and heating-related services from the same wider business.
How Does British Gas Perform on Customer Service?
Its scale does not automatically translate into stronger service ratings.
Citizens Advice awarded British Gas 2.61 out of five for April–June 2026.
The underlying assessment gave British Gas one out of five in the category measuring fewer complaints, although it performed better on contact waiting times and customer commitments.
British Gas’s published complaints report also recorded 120,156 complaints received during the second quarter of 2026, compared with 151,139 during the corresponding quarter of 2025.
This represents a reduction of approximately 20.5% in the reported quarterly complaint count.
The decline is encouraging, but the overall service score indicates that consumers should still compare suppliers rather than relying on brand recognition.
Assessment: Relevant for customers who value an established energy company and its broader home-service offering, but independent complaints and billing performance deserve attention.
3. E.ON Next
E.ON Next is the consumer-facing energy supply business within the wider E.ON group.
In 2026, it has become particularly significant because of its strong customer-service performance and the acquisition of OVO.
Citizens Advice awarded E.ON Next 3.71 out of five for April–June 2026, making it the highest-rated supplier among the traditional large domestic energy providers in that assessment.
Is E.ON Next Suitable for Electric Vehicle Owners?
E.ON Next offers specialist EV electricity tariffs through its Next Drive range.
These products include lower-priced electricity during specified overnight periods, although eligibility, charging compatibility, peak rates and tariff conditions vary.
This creates an important distinction between comparing suppliers and comparing individual tariffs.
An EV owner who can regularly charge overnight may benefit more from the right time-of-use tariff than from a small discount on a conventional all-day electricity rate.
However, the complete household electricity cost must be considered, including peak-hour consumption and standing charges.
Assessment: Worth comparing for households prioritising independent service ratings, digital account management and EV charging options.
4. OVO Energy
OVO Energy remains a prominent supplier brand, although its ownership changed in October 2026.
On 1 October, the Competition and Markets Authority cleared E.ON’s proposed takeover. E.ON subsequently confirmed that the acquisition had been completed on 8 October 2026.
This is one of the most important developments in the British household energy market during the year.
What Does E.ON’s Acquisition Mean for OVO Customers?
According to the companies’ announcements, there is no immediate change to existing tariffs, payment arrangements or customer-service channels.
Customers do not need to switch provider because of the acquisition, and existing tariff terms are being honoured.
OVO’s distinctive products include Charge Anytime, which manages compatible EV charging to take advantage of lower-cost periods.
OVO received 3.65 out of five in the April–June 2026 Citizens Advice assessment.
It is important to recognise that this rating covers a period before the acquisition was completed. Future customer-service performance should be assessed using new data rather than assuming the two businesses already operate identically.
Assessment: OVO remains relevant for customers interested in smart charging and digital energy products, but its ownership is now part of the E.ON group.
5. EDF Energy
EDF Energy is unusual among major household suppliers because it also has a substantial role in electricity generation.
Its UK activities span domestic energy supply and major generation assets, including nuclear electricity.
This makes EDF important to the wider UK energy system as well as the retail market.
What Should Households Compare With EDF?
Customers should distinguish EDF’s electricity-generation business from the electricity tariff supplied to an individual property.
The fact that a company generates low-carbon electricity does not mean every household automatically receives electricity exclusively from those sources.
EDF also offers products for electric vehicle charging, including its GoElectric tariff range.
In October 2026, EDF highlighted overnight charging opportunities as part of its EV tariff proposition.
For customers considering such products, total annual usage, peak-hour rates and the available charging window matter more than a promotional savings figure alone.
EDF scored 2.96 out of five in the Citizens Advice customer-service comparison.
Assessment: A major established option for households wanting to compare traditional tariffs, EV products and a supplier with substantial electricity-generation operations.
6. ScottishPower
ScottishPower is part of the Iberdrola group and remains one of Britain’s major domestic energy suppliers.
Its wider business includes electricity networks and investment in renewable energy, while the retail operation supplies household electricity and gas.
ScottishPower’s involvement in different parts of the energy system should not be confused with its domestic customer-service performance.
How Competitive Is ScottishPower in 2026?
The company offers domestic energy tariffs and services associated with electric vehicles and smarter household energy use.
However, consumers should evaluate available tariffs using their postcode and actual energy consumption rather than assuming a major supplier will offer the same prices across Great Britain.
ScottishPower received 2.76 out of five in Citizens Advice’s April–June 2026 service assessment.
Its score for the fewer-complaints category was one out of five, indicating an area where the company compared less favourably with several alternatives.
Assessment: An established supplier worth including in price comparisons, particularly when considering its wider renewable-energy operations, but customer-service evidence should not be overlooked.
7. Utility Warehouse
Utility Warehouse differs from many energy companies because it offers a broader collection of household services.
Its business model allows customers to combine utilities and services such as broadband, mobile and insurance.
For some households, this may offer simpler administration and potential bundled benefits.
Are Bundled Utility Deals Better Value?
Not necessarily.
Combining several services can make monthly household administration easier, but the financial advantage depends on the prices and terms of every service included.
For example, saving £60 annually on energy would not be worthwhile if a bundled broadband contract cost £120 more than a comparable standalone deal.
Utility Warehouse scored 2.63 out of five in the latest Citizens Advice assessment.
Its bundling model therefore needs to be evaluated separately from its independent customer-service performance.
Assessment: Potentially suitable for households seeking to consolidate bills, provided the combined cost is demonstrably competitive.
8. Good Energy
Good Energy is a specialist supplier associated with renewable electricity.
It is particularly relevant for customers whose choice of energy company depends on how electricity is sourced, rather than price alone.
In September 2026, Good Energy reported that it had ranked first in the Matched Clean Power Index for hourly matching of renewable electricity for the second consecutive year.
The company reported an hourly matching score of 87%.
Why Does Renewable-Electricity Matching Matter?
Many electricity tariffs advertised as renewable use certificates that match renewable generation and customer electricity consumption over a longer accounting period.
Hourly matching assesses a different question: how closely renewable generation corresponds to customers’ electricity use at particular times.
This can provide additional information about the relationship between electricity consumption and renewable generation.
However, electricity delivered through the national grid remains a shared physical mix, regardless of the retail supplier.
Good Energy achieved 3.68 out of five in the Citizens Advice customer-service assessment.
Assessment: A relevant choice for customers particularly interested in renewable-electricity sourcing and the evidence behind green tariff claims.
For additional background, London Business Magazine has previously examined how the power grid can hinder renewable energy development.
9. 100Green
100Green is a smaller, established UK energy supplier with a particular focus on renewable electricity and green gas.
Unlike suppliers that concentrate primarily on renewable-electricity certificates, 100Green offers specialist tariffs incorporating certified green gas.
Its options include a tariff marketed as using 100% renewable electricity and 100% green gas, with additional environmental certification.
How Does 100Green Compare on Service?
100Green received 3.90 out of five in Citizens Advice’s April–June 2026 customer-service assessment.
It placed second overall among the suppliers included in that comparison.
It also achieved five out of five for contact waiting times and customer commitments, although its billing and metering score was lower.
The results suggest that smaller suppliers can compete effectively with larger operators on several customer-service measures.
Nevertheless, a strong service rating does not establish whether a particular tariff is cheaper.
Assessment: Worth investigating for environmentally focused households that also value strong independent customer-service results.
10. Outfox Energy
Outfox Energy is a smaller domestic energy supplier that stands out in the latest independent customer-service assessment.
Citizens Advice ranked it first for April–June 2026, awarding 4.03 out of five.
Its results included 4.4 out of five for contact waiting times and 3.9 out of five for billing and metering.
These scores do not mean every customer will have the same experience, but they provide a stronger basis for comparison than promotional claims alone.
Can Outfox Energy Compete on Price?
Outfox promotes tracker tariffs designed to offer unit rates below the Ofgem price cap, subject to the particular product’s terms.
Customers should still check the exact standing charge, unit rates, contract length and eligibility before switching.
A percentage discount on unit rates does not always produce the same percentage reduction in an entire household energy bill.
Assessment: A particularly interesting challenger for consumers prioritising independently measured service quality alongside tariff comparisons.
Which UK Energy Companies Have the Best Customer Service?
Customer service has become one of the most useful ways to compare energy suppliers.
Citizens Advice calculates its ratings using complaints, contact waiting times, billing and metering performance, and customer commitments.
In September 2026, the organisation reported that the median customer-service score had increased from 3.26 to 3.40 out of five between the first and second quarters of 2026.
Median call waiting times also fell from 77 seconds to 68 seconds.
This improvement is encouraging, but significant differences remain between individual suppliers.
| Supplier | Overall score | Contact waiting-time score | Billing and metering score |
|---|---|---|---|
| Outfox Energy | 4.03 | 4.4 | 3.9 |
| 100Green | 3.90 | 5.0 | 3.4 |
| E.ON Next | 3.71 | 3.6 | 4.3 |
| Good Energy | 3.68 | 3.6 | 3.6 |
| Octopus Energy | 3.67 | 3.6 | 3.4 |
| OVO Energy | 3.65 | 4.2 | 4.0 |
| EDF Energy | 2.96 | 3.2 | 3.2 |
| ScottishPower | 2.76 | 4.0 | 2.8 |
| British Gas | 2.61 | 4.2 | 2.0 |
Source: Citizens Advice, April–June 2026. Category scores are also out of five; they are not actual call waiting times or percentages.
An important finding is that suppliers perform differently across individual categories.
For example, a company with a relatively good contact waiting-time score may still perform less well on complaints or billing accuracy.
That is why judging a provider purely by how quickly someone answers the phone can be misleading.
Ofgem’s July–August 2026 consumer survey provides wider context. It found that 82% of respondents were satisfied overall with their supplier, while 78% were satisfied with customer service.
These are national survey findings, not ratings of particular companies.
How Much Do Energy Companies Charge in October 2026?
Energy tariffs are a major concern for UK households, but comparing suppliers requires understanding the difference between regulated prices and individual contracts.
Ofgem’s October–December 2026 price cap is £1,723 per year for a typical dual-fuel household using standard variable tariffs and paying by Direct Debit.
The cap represents an annualised benchmark at typical usage, not a maximum amount that any household can be billed.
Current Ofgem Energy Price Cap Rates
| Energy cost | July–September 2026 | October–December 2026 |
|---|---|---|
| Typical annual dual-fuel bill | £1,663 | £1,723 |
| Electricity unit rate | 26.11p/kWh | 26.32p/kWh |
| Gas unit rate | 7.33p/kWh | 7.97p/kWh |
| Electricity standing charge | 57.19p/day | 54.83p/day |
| Gas standing charge | 29.04p/day | 29.68p/day |
Source: Ofgem’s published national average Direct Debit price-cap rates. Figures are rounded; regional prices differ.
A closer look reveals something important.
Between July and October 2026, the average gas unit rate increased by approximately 8.7%, while the electricity unit rate rose by less than 1%.
The electricity standing charge decreased, but the gas standing charge increased.
This means households with different gas and electricity consumption patterns will experience the changes differently.
What Does the Price Cap Mean for a Real Household?
From 1 July 2026, Ofgem’s medium-consumption benchmark was revised to 2,500kWh of electricity and 9,500kWh of gas annually.
Using the rounded October price-cap rates, the following illustrative annualised calculations can be made:
| Household consumption example | Annual electricity | Annual gas | Approximate combined annual cost |
|---|---|---|---|
| Lower usage | 1,800kWh | 6,000kWh | £1,260 |
| Updated Ofgem medium-use benchmark | 2,500kWh | 9,500kWh | £1,724 |
| Higher usage | 3,500kWh | 14,000kWh | £2,345 |
Calculations use national average Direct Debit unit rates and 365 days of standing charges for both fuels. These are original illustrative calculations, not supplier quotes. Rounded rates explain the slight difference between the £1,724 calculation and Ofgem’s published £1,723 benchmark.
The difference between the lower-usage and higher-usage examples is approximately £1,085 annually.
This demonstrates why the headline price cap alone is insufficient for household budgeting.
A larger or poorly insulated property may pay considerably more than the reported typical bill, even when its tariff is fully compliant with the price cap.
Why the 2026 Consumption Benchmark Matters?
There is another important change that consumers may overlook.
Before July 2026, Ofgem’s medium household benchmark was 2,700kWh of electricity and 11,500kWh of gas.
The new benchmark reduced those figures to 2,500kWh and 9,500kWh respectively.
Consequently, comparisons between older and newer headline annual bills can be misleading unless they account for the change in assumed consumption.
For the fairest comparison, households should use their own annual kWh usage rather than relying on the published national average.
Has VAT Been Removed From UK Electricity Bills?
Yes. The government introduced a temporary removal of VAT from household electricity bills from 1 October 2026 to 31 March 2027.
Gas remains subject to VAT at 5%.
The government estimated that the electricity VAT change would save a typical household around £45 per year, although the actual benefit depends on consumption and tariff rates.
The measure also applies to household fixed tariffs, not only standard variable tariffs.
It is important to distinguish this tax reduction from movements in wholesale energy prices.
Despite the electricity VAT cut, the overall October 2026 price cap increased because other underlying costs, particularly wholesale gas, moved upwards.
For readers following changing advice about tariff choices, our earlier article on Martin Lewis, Octopus Energy and fixed energy deals provides historical context. Any tariff figures from earlier in 2026 should be replaced with current quotes before making a decision.
How Did E.ON’s Acquisition of OVO Change the UK Energy Market?
The October 2026 takeover represents a structural change rather than a routine transfer of customers between tariffs.
Following clearance by the Competition and Markets Authority, E.ON completed its acquisition of OVO on 8 October.
The transaction brought together two companies that had previously competed independently for household energy customers.
According to the transaction announcements, E.ON Next supplied approximately 5.6 million UK customers, while OVO added around four million.
Cornwall Insight estimated that, following the combination, Octopus, British Gas and E.ON would collectively account for approximately 74% of the domestic market, using its domestic energy account methodology.
Why Does Greater Market Concentration Matter?
Large suppliers can potentially benefit from scale when investing in customer systems, billing technology and new energy products.
However, greater concentration can also raise questions about competitive pressure and how easily new businesses can enter the market.
For households, the immediate issue is more practical.
E.ON Next and OVO continue to operate through separate customer-facing systems for now. Their published arrangements state that existing contracts and service channels remain unchanged.
Therefore, customers should not assume that the companies have identical tariffs, service scores or account arrangements simply because they share ownership.
The acquisition also shows why older articles describing the traditional Big Six without Octopus Energy are no longer reliable representations of today’s market.
What Happened to npower, SSE and Other Former Energy Companies?
Several familiar names from older UK energy rankings no longer represent independent mainstream domestic suppliers in the same way.
npower: Its former domestic customer business was absorbed into the E.ON group. It should not be listed alongside E.ON Next as an independent household supplier.
SSE: SSE’s domestic retail business was sold to OVO, with the transaction completed in 2020. SSE continues to operate in other parts of the energy sector, including networks and generation.
National Grid: National Grid is a major energy infrastructure business, not a conventional household energy retailer competing for domestic gas and electricity contracts.
Centrica: Centrica is the parent company of British Gas. Listing both as separate household suppliers would duplicate the underlying business group.
Schneider Electric: Schneider Electric specialises in energy management, equipment and automation rather than supplying mainstream domestic electricity and gas tariffs.
This distinction is essential: an important energy company is not necessarily an energy supplier that consumers can switch to.
Are Renewable Energy Suppliers Always Better?
Renewable-energy sourcing is increasingly relevant, but green credentials need careful interpretation.
A supplier may offer renewable-backed electricity using Renewable Energy Guarantees of Origin certificates, while another may place greater emphasis on direct purchasing arrangements with generators or matching renewable generation to demand.
These approaches are not necessarily equivalent.
An environmental comparison should examine how electricity is purchased, whether gas products include certified renewable gas, how claims are verified and whether relevant information is independently assessed.
Customers also need to consider the affordability of the tariff and the quality of support.
A supplier with strong environmental credentials may not have the cheapest tariff for a particular property. Similarly, a competitive energy tariff does not automatically indicate strong renewable sourcing.
What Does Rising Energy Debt Reveal About the Market?
A supplier’s ability to support customers facing financial difficulty is becoming increasingly important.
Ofgem’s updated debt and arrears indicators show that the combined value of domestic customer energy debt and arrears outstanding for more than 91 days reached £5.02 billion in the second quarter of 2026.
That was approximately 13% higher than in the corresponding quarter of 2025.
This figure is particularly concerning because it exists alongside improving average customer satisfaction.
The two findings are not contradictory. A large share of households may be satisfied with their supplier’s service while a significant number still struggle to afford their energy consumption.
Consumers experiencing difficulty should contact their supplier promptly to discuss affordable repayment plans and available support.
When selecting an energy company, the quality of assistance available during financial hardship deserves consideration alongside tariff prices and app features.
How to Choose the Best Energy Supplier in the UK
There is no single provider that will offer the lowest cost and strongest service for every household.
The most suitable company depends on postcode, electricity and gas consumption, payment method, energy technology and household preferences.
| Household priority | What to compare |
|---|---|
| Lowest annual cost | Actual annual tariff estimate using personal kWh consumption |
| Reliable customer support | Independent complaints, billing and contact scores |
| Electric vehicle charging | Overnight rates, peak rates, smart-meter compatibility |
| Renewable-energy sourcing | Generation contracts, certification and matching methodology |
| Budget certainty | Fixed unit rates, contract duration and exit fees |
| Simple household administration | Account features, billing clarity and bundled-service costs |
| Financial vulnerability | Repayment support, accessible contact methods and eligibility for assistance |
Should You Choose a Fixed or Variable Energy Tariff?
A fixed tariff can provide greater certainty over unit rates and standing charges during the agreed contract period.
It does not usually fix the total bill, because that still depends on energy usage.
A standard variable tariff is generally subject to Ofgem’s price cap and changes when new cap rates take effect.
A fixed contract may be attractive if it offers a competitive annual cost and reasonable exit terms. However, customers could end up paying more if wholesale prices and variable tariffs subsequently fall.
The best approach is to compare the full estimated annual cost and understand the contract conditions.
How Can You Switch Energy Suppliers Safely?
Ofgem requires household electricity and gas switches to be completed within five working days.
If an eligible switch takes longer, the new supplier must generally pay £40 compensation under the guaranteed standards.
Before switching, consumers should check any contractual exit fees, review their annual usage and establish whether their smart meter and specialist energy products will remain compatible.
It is also sensible to record final meter readings and review the closing bill once the transfer has completed.
Conclusion: Which UK Energy Company Should You Choose in 2026?
The UK energy sector is entering a new phase characterised by greater consolidation, smarter electricity products and growing consumer expectations.
Octopus Energy remains an important market leader, while E.ON’s acquisition of OVO has significantly altered the competitive landscape. British Gas, EDF and ScottishPower continue to be established options, but smaller companies such as Outfox Energy, 100Green and Good Energy demonstrate that market size is not the only measure of value.
The latest independent evidence also shows why customers should resist simplistic rankings. A supplier can perform well on contact waiting times but less well on billing accuracy. Another may offer excellent environmental credentials without necessarily providing the lowest annual bill.
The best energy supplier is the one that offers a competitive total cost for your specific consumption, acceptable contract terms and service performance suited to your needs.
For households reviewing their options in late 2026, comparing actual kWh usage, current tariff quotations, standing charges and independent service data offers a more reliable basis for choosing an energy company than brand reputation alone.
Frequently Asked Questions
Which Is the Biggest Energy Supplier in the UK in 2026?
The answer depends on whether the comparison uses individual supplier brands, company groups, customer accounts or electricity and gas meter points.
Octopus Energy reported around 26% of the British household energy market in August 2026. E.ON’s subsequent acquisition of OVO brought approximately 9.6 million customers under the wider group’s ownership, although E.ON Next and OVO remain distinct customer-facing brands.
A ranking must specify its measurement method and reference date.
Which Energy Company Has the Best Customer Service?
Outfox Energy ranked first in the Citizens Advice assessment for April–June 2026, scoring 4.03 out of five. It was followed by 100Green at 3.90 and E.ON Next at 3.71.
These results measure customer service, not overall tariff value.
Which Energy Supplier Is Cheapest in the UK?
There is no permanently cheapest supplier for every household.
Prices vary according to tariff availability, postcode, consumption, payment type and other eligibility requirements.
Customers should compare actual tariff quotes using their own annual electricity and gas usage rather than relying on a national ranking.
Is Octopus Energy Better Than British Gas?
Octopus Energy achieved a higher overall Citizens Advice customer-service rating for April–June 2026: 3.67 compared with British Gas at 2.61.
However, selecting between the companies should also involve comparing individual tariffs, contract conditions and relevant additional services.
Is OVO Energy Now Owned by E.ON?
Yes. E.ON completed its acquisition of OVO on 8 October 2026.
OVO customers have been told that their existing tariffs, balances and support arrangements remain unchanged for now.
Does the £1,723 Energy Price Cap Apply to Everyone?
No. The £1,723 figure is an annualised benchmark for a typical dual-fuel household on a regulated default tariff paying by Direct Debit.
A household using more energy can pay substantially more. Fixed tariffs and different payment arrangements also affect the comparison.
The Great Britain price cap does not apply to Northern Ireland’s separate energy market.
Can an Energy Supplier Change My Fixed Tariff After a Takeover?
An acquisition does not automatically cancel existing contractual tariff terms.
In the E.ON–OVO transaction, the companies specifically stated that existing tariff rates, terms and contract end dates would be honoured.
Customers should rely on the formal terms and communications from their supplier rather than assuming that ownership changes permit immediate price increases.
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