OVO Energy vs Octopus Energy

OVO Energy and Octopus Energy are the two largest challengers to the old supplier establishment, and the comparison between them is now shaped less by price than by conduct. OVO is due to be acquired by E.ON, a deal announced in May 2026 that puts the combined business neck and neck with Octopus¹. Before that, Ofgem concluded a long-running investigation into OVO's prepayment meter practices in June 2026, with the company agreeing to pay £7 million into Ofgem's Voluntary Redress Fund, £3.4 million in credit and debt relief for vulnerable customers, and £1.1 million in compensation to rural customers in the Scottish Highlands and Islands².

The independent evidence on service points the same way. Citizens Advice ranked OVO 8th in its supplier comparison table for January to March 2026, with a complaints rating of 2.5 out of 5 and 39.5 complaints per 10,000 customers³. Octopus ranked 4th over the same period, with a complaints rating of 3.5 out of 5⁴. Ofgem's January 2026 survey found OVO customers significantly less satisfied than average both overall and with customer service⁵.

For a household, the practical question is what each supplier does for energy independence. Both are grid-dependent intermediaries: they buy wholesale power, bill for it, and hold the meter relationship. Neither makes a home self-sustaining. What differs is the quality of the account, the reliability of the billing, and how the supplier behaves when something goes wrong.

OVO's regulatory record: enforcement investigation and redress settlement

Ofgem's enforcement toolkit is broad. It can open investigations, make orders and impose penalties in response to non-compliance and suspected non-compliance⁸. Since 2012 the regulator has secured over £40 million in penalties and redress in connection with mis-selling cases alone⁹. Enforcement cases run under the Gas Act and Electricity Act, and the policy framework for financial penalties and consumer redress sits underneath them¹⁰.

OVO's own case began as an enforcement investigation into its prepayment meter practices. In May 2025 that investigation was extended to include the prepayment meter market compliance review, and the assessment moved out of the review process¹¹. The conclusion came in June 2026: Ofgem found OVO had failed to adequately monitor prepayment meter customers, and the company agreed to the redress package².

The settlement has three parts. The £7 million goes into Ofgem's Voluntary Redress Fund. A further £3.4 million provides credit and debt relief for vulnerable customers. The final £1.1 million is compensation for rural customers in the Scottish Highlands and Islands². Separately, OVO has been reported as paying a total of £2,765,200 in compensation, including £150 to all affected customers¹².

This is not OVO's first enforcement outcome. Ofgem had previously used its enforcement powers in relation to smart meters to require OVO Energy to contribute more than £1 million to a redress fund, and the regulator has been considering more severe financial penalties¹³. The pattern matters for households because it shows a supplier that has been repeatedly found short on metering conduct, not a single isolated lapse.

What the Ofgem redress settlement means for OVO customers

The money in a redress settlement does not arrive as a cheque to every customer. Ofgem's Voluntary Redress Fund is used for consumer benefit, and the credit and debt relief element is directed at vulnerable customers specifically². The rural compensation is targeted at a defined group in the Scottish Highlands and Islands². A household outside those groups sees no direct payment.

What affected customers do get is the £150 reported as paid to all affected customers within the wider £2,765,200 compensation total¹². That figure is separate from the redress package and reflects compensation for the customers whose cases were identified.

The wider significance is regulatory rather than financial. A concluded enforcement case with a redress settlement is a finding about how a supplier ran part of its operation. For a household weighing OVO against Octopus, it is evidence about process quality: whether meters were monitored, whether problems were spotted, and whether the supplier acted before a regulator intervened.

There is also a live question about ownership. OVO is due to be acquired by E.ON, and the deal needs regulatory approval, which can take some time. Both suppliers will keep operating independently until then¹. That means the OVO account terms, tariffs and service operation continue as they are for the time being, with the ownership change pending rather than completed.

Tariffs and price changes: what has moved and when

OVO's tariff range has been refreshed repeatedly. In July 2025 the company launched 1 Year Fixed, 2 Year Fixed and Online Exclusive tariffs, along with boiler cover and greener electricity variants⁷. A second wave on 18 July 2025 introduced a 2 Year Fixed and an Online Exclusive, removing the earlier versions from 9 and 16 July⁷. The terms and conditions for the 1 Year Fixed No Direct Debit plan were last updated in September 2025⁷.

On the export side, Octopus runs a set of smart export tariffs that show how the two suppliers differ in product ambition. Outgoing Octopus is a fixed tariff with no fixed end date, and it requires the household to be on an Octopus import tariff¹⁴. Octopus Flux is variable with no fixed end date and carries the same import requirement¹⁴. The Octopus SEG Tariff is fixed with no fixed end date¹⁴. These are export products, so they matter to homes with solar rather than to the general comparison.

For electric vehicle owners, Octopus offers three EV tariffs, and its original EV tariff gives five hours of cheaper energy every night to charge a car¹⁵. Customers can select the time they need the car by and the amount of charge required, and Octopus's systems charge at the cheapest times¹⁵. Not every charger works with every smart tariff: one product page notes that a charger can make the most of Octopus's Intelligent tariff but is not yet compatible with OVO's equivalent¹⁶.

VAT on domestic electricity is set to fall from 5% to 0% following a UK Government decision, with the price cap changing on the same date⁷. That change applies across suppliers and is not an OVO or Octopus differentiator.

Support for hard-pressed households: the Extra Support Package and Warm Home Discount

OVO's winter Extra Support Package, totalling £56 million, opened for customer applications on 1 October 2025⁷. It is a discretionary fund run by the supplier, and OVO has also partnered with the Lightning Reach platform to make it easier for households to access energy support⁷.

The statutory scheme is the Warm Home Discount, which supports two and a half million low-income and vulnerable households¹⁷. It is a one-off £140 payment applied to eligible customers' electricity bills between October and April⁶. It is provided by larger energy suppliers, with some smaller suppliers participating voluntarily¹⁸. The scheme covers England, Scotland and Wales and runs until 31 March 2031⁶. It reopens in October 2026¹⁹. Universal Credit is one of the qualifying benefits²⁰.

OVO's record on delivering the discount is the weak point. Thousands of OVO customers did not receive their Warm Home Discount payments for winter 2023/24 until November 2025, more than 19 months late¹². That delay sits alongside the wider pattern of enforcement and complaint figures, and it is the kind of failure that hits the households least able to absorb it.

There is also a local dimension. A Warm Home Discount industry initiative in Cornwall is funded by OVO and previously SSE²¹. Support of this kind is often delivered through council winter wellbeing schemes rather than directly by the supplier, and the practical route for a household in difficulty is usually the supplier's own support team plus the local authority.

Complaints data: what OVO's published figures show

The independent complaints picture for OVO is consistent across three separate measures. Citizens Advice recorded 39.5 complaints per 10,000 customers for January to March 2026, a complaints rating of 2.5 out of 5, and a "fewer complaints received" rating of 2.5 out of 5³. OVO ranked 8th in the supplier comparison table over the same period³. Octopus, by contrast, recorded a "fewer complaints received" rating of 3.5 out of 5 and ranked 4th⁴.

Ofgem's own survey work adds a satisfaction dimension. In January 2026, 22% of OVO customers said they were neither satisfied nor dissatisfied, and 7% said they were dissatisfied or very dissatisfied⁵. More pointedly, a significantly lower proportion of OVO customers reported being satisfied or very satisfied with customer service than the average, and OVO had a significantly lower than average proportion of customers satisfied overall⁵.

Which? scored OVO 6 out of 15 on complaints in its assessment dated 19 January 2026, against 8 out of 15 for Octopus²². The two independent bodies are measuring slightly different things, but they land in the same place.

OVO also publishes its own numbers. It reported 101,965 complaints received in the second quarter of 2026, equal to 1,775 per 100,000 customers⁷. That is a self-reported figure and uses a different denominator from the Citizens Advice measure, so the two are not directly comparable, but it shows the volume the company is handling.

Billing and prepayment meter issues under scrutiny

Both suppliers accept prepayment customers and both accept direct debit³. Both are recorded as having smart meters working correctly for the January to March 2026 period³. On the surface, the metering offer is similar.

The difference is in what has gone wrong. The OVO enforcement investigation was extended in May 2025 to include the prepayment meter market compliance review, and the assessment moved out of that review¹¹. The eventual finding was that OVO failed to adequately monitor prepayment meter customers². That is a specific operational failure in the segment where customers have the least room to absorb errors.

The Energy Ombudsman's case studies show the kind of billing problem that reaches dispute stage. In one case involving disputed usage due to estimated meter readings, the finding was that there had been a delay in the supplier updating its systems and a failure to identify the issue when the complaint was raised²⁴. Estimated readings are the common thread: when a meter reading is estimated rather than actual, the bill can drift from reality, and the correction depends on the supplier spotting it.

OVO's prepayment customers can reach the company Monday to Friday 8am to 8pm, and Saturday and Sunday 9am to 5pm³. OVO also offers SignVideo and ring backs, while Octopus offers neither web chat nor a mobile hotline and no ring backs³. Those contact-channel differences matter more to prepayment customers, who often need to resolve an issue before the meter runs out.

OVO vs Octopus: where the comparison stands on the evidence

On the independent measures, Octopus leads. It ranked 4th against OVO's 8th in the Citizens Advice comparison for January to March 2026⁴. Its complaints rating was 3.5 against OVO's 2.5, and its Which? complaints score was 8 out of 15 against 6⁴. Ofgem's January 2026 survey found OVO customers significantly less satisfied than average, a finding not recorded against Octopus⁵.

On scale and ownership, the picture is more even. The E.ON acquisition of OVO puts the combined business neck and neck with Octopus¹. Octopus's own smart meter figures include the Bulb and Shell customer scope, which is a reminder that its customer base has been assembled partly through taking on failed suppliers' households²⁵.

On products, Octopus has the broader smart tariff range, with three EV tariffs and a set of export tariffs for solar households¹⁵. OVO's tariff launches in July 2025 were conventional fixed and online exclusive products with boiler cover and greener electricity variants⁷. For a household with an electric vehicle or solar panels, Octopus's product set is more developed. For a household with neither, the difference narrows to service quality and price.

Neither supplier offers energy independence in any meaningful sense. Both are intermediaries between the wholesale market and the meter. A household's exposure to wholesale prices, network charges and standing charges is the same whichever of the two it chooses. What a household can control is the tariff structure it signs up to, the accuracy of its meter readings, and how quickly it escalates a problem.

What owning an OVO account means day to day: bills, boiler cover and terms

An OVO bill shows usage in kWh based on smart meter readings²⁶. A worked example shows a customer spending £55.23 on gas and electricity in a month against a direct debit set at £88, leaving the account in credit²⁶. The gap between usage and direct debit is the number to watch: it decides whether credit accumulates or a shortfall builds, and it is the most common source of billing disputes.

OVO's billing and metering rating from Citizens Advice was 3.8 out of 5 for January to March 2026²³. Octopus has developed plain-language billing in collaboration with Plain Numbers to help consumers understand their statements²⁷. That is a design choice rather than a regulatory requirement, and it speaks to how readable the account is month to month.

Boiler cover is sold alongside the energy account. OVO's offer of up to 35% off boiler cover plans ends on 10 December 2026⁷. It is a promotional discount on a cover product, not a warranty on the boiler itself, and the cover terms run separately from the energy contract.

The ownership change is the largest open question. OVO is due to be acquired by E.ON, subject to regulatory approval, with both suppliers operating independently until then¹. OVO was formed in 2009⁷. Until the deal completes, the account terms, the tariff range and the service operation continue under the OVO brand.

For energy independence, the honest position is that an OVO account delivers none of it. The household remains dependent on the grid, on wholesale gas and electricity prices, and on a supplier that is itself about to change owner. What the account can deliver is accurate billing, a working smart meter, and a support route that responds. On the evidence above, that last part is where OVO has the most ground to make up.