Energy Supplier Financial Resilience Rules

Ofgem's financial resilience rules are a set of obligations carried in the gas and electricity supply licences, backed by the regulator's power to direct, fine or modify a licence. They sit alongside the consumer standards in the same licences: Ofgem's own description of the regime refers to "licence obligations in relation to both consumer standards and supplier financial resilience", naming supply licence conditions 4B.23 and 4B.8d¹. The modern shape of the regime dates from the wave of supplier collapses: in December 2021 Ofgem published an action plan on financial resilience setting out how it would improve its collection and reporting of information on suppliers, and introducing stress tests².

For a household, the practical points are narrower than the policy debate. Every domestic supplier in Great Britain holds a licence from the Gas and Electricity Markets Authority, the statutory body whose day-to-day functions Ofgem performs³. Households on standard variable and default tariffs are protected by the default tariff cap, made under the Domestic Gas and Electricity (Tariff Cap) Act 2018⁵. Ofgem reviews and sets that cap every three months⁷, having moved from six-monthly to quarterly updates in August 2022². Three energy companies are exempt from the cap on default tariffs, on the basis that they proved higher costs from supporting renewables⁸.

What the rules do not do is make an individual household's money safe by name. Ofgem generally does not intervene in individual disputes between consumers and energy businesses⁹; that work falls to the supplier's own complaints procedure and then to the Energy Ombudsman, which Ofgem approves to handle service disputes in the energy sector¹⁰. The regime is a system of conditions on companies, enforced after the fact, not an individual guarantee.

What the financial resilience rules are and who they apply to

The financial resilience regime applies to licensed gas and electricity suppliers, and the consumer-facing rules that sit beside it apply across the domestic and microbusiness market. The back billing ban, for example, was decided in March 2018 for all domestic and microbusiness suppliers¹², and today means a supplier cannot charge domestic or microbusiness consumers for energy used, or for charges, more than 12 months old where the fault was the supplier's¹³.

The December 2021 action plan is the pivot point. It set out how Ofgem would improve its collection and reporting of information on suppliers, and it introduced stress tests². That is the substance of what is often loosely called capital adequacy: rather than a single published ratio a household can look up, it is a reporting and testing relationship between the regulator and each licensee, with the results held by Ofgem.

The same architecture is used wherever Ofgem needs money to move reliably through suppliers. Under the proposed Debt Relief Scheme, licence condition SLC 24B.18 of the gas and electricity supply licences would require suppliers to comply with reporting, assurance and auditing requirements, with data requested under existing powers in SLC 5 of both licences¹⁴. Ofgem states it takes a zero-tolerance approach to fraud in that scheme, and requires suppliers to mitigate fraud risk with senior manager oversight, accurate reporting processes and processes for handling suspected fraud, whistleblowing and allegations¹⁴.

For households the honest summary is that the rules are about the supplier's condition, not the customer's balance. Nothing published here promises that a credit balance is held separately from a supplier's working capital. What a household can rely on is the wider licence framework: rules on affordable repayment, on billing accuracy, and on the appointment of a replacement supplier when a company fails. The pages on energy supplier failures and the supplier of last resort deal with what happens after a collapse.

The supply licence: the legal basis for supplier obligations

The supply licence is the instrument that turns policy into a legal duty. It carries both the financial conditions and the conduct conditions, and breach of a condition is what triggers enforcement.

Several of the household-facing duties sit here. Ofgem's Ability to Pay principles require suppliers to give due consideration to having appropriate credit management policies and guidelines, proactive contact with customers, understanding individual customers' ability to pay, setting repayment rates based on ability to pay, ensuring the customer understands the arrangement, and monitoring arrangements after they have been set up¹⁵. Put simply, Ofgem's rules mean a supplier must work with a customer to agree a payment plan that they can afford¹⁶.

Guaranteed standards are another licence-derived duty: for some common problems the regulator has set out what payment a supplier should automatically make to the consumer¹⁷. Ofgem sets both the standards and the level of compensation payable where a supplier breaches one¹⁸. Those are covered in more detail under switching compensation and guaranteed standards.

The licence also carries obligations that are administrative rather than consumer-facing but bear on a supplier's finances. Ofgem's scheme role includes calculating suppliers' obligations and tracking performance against them, processing notifications, auditing suppliers, counter fraud work, and reporting to the Secretary of State for the Department for Energy Security and Net Zero¹⁹. A supplier carrying a large environmental or social obligation carries a real liability, and how it is discharged is monitored.

Ofgem describes its broader debt strategy in four parts: resetting debt through a proposed Debt Relief Scheme, reforming how suppliers manage debt by increasing debt standards, preventing debt by looking at billing and access to credit, and energy affordability support²⁰. Each part lands, eventually, as a licence condition.

The Gas and Electricity Markets Authority: the regulator behind the rules

Decisions attributed to Ofgem are formally decisions of the Gas and Electricity Markets Authority. Ofgem performs the day-to-day functions of the Authority, which is the statutory body responsible for administering schemes such as the Domestic Renewable Heat Incentive in Great Britain³. The Feed-in Tariff scheme is described the same way: administered by the Authority, with Ofgem performing its day-to-day functions⁴. In Ofgem's own consultation documents the Authority is named as the data controller, with Ofgem used for ease of reference²¹.

The statutory base is older than the cap. The Gas Act 1986, its subordinate legislation and related statutory instruments, namely licences and industry codes, together form a regime of economic regulation for gas transporters which Ofgem monitors and enforces²². The same pattern of Act, licence and code runs through electricity.

In supervision terms, Ofgem states that it monitors energy suppliers and network operators closely to make sure they meet the rules set out in licences, regulations and law, provide good customer service, and reply quickly to customers who contact them²³. That monitoring duty is distinct from adjudication: the regulator watches the market and enforces against companies, rather than settling individual accounts.

The Authority's remit has itself been under change. In April 2026 the UK Government announced reforms to the regulator's remit to focus on economic and consumer protection and to ensure every energy consumer is protected, including the ability to regulate in new areas of the market if needed²⁵. Households should expect the boundaries of the regime to keep moving, particularly into areas such as heat networks and flexibility services that were outside the traditional supply licence.

The price cap protects standard variable and default tariffs

The default tariff cap is set in accordance with the Domestic Gas and Electricity (Tariff Cap) Act 2018, which protects households on standard variable and default tariffs⁵. It covers existing and future domestic customers on those tariffs²⁶. In the Welsh Government's plain description, the cap exists to protect people from a loyalty penalty²⁷.

Two features of the Act shape everything else. First, Ofgem cannot set different cap levels for different suppliers, and must protect default tariff customers²⁸. A financially weak supplier therefore cannot be given a higher cap to trade out of trouble, which is precisely why financial resilience has to be regulated separately. Second, the cap is a cap on unit rates and standing charges, not on bills: the published figures are the maximum unit rates suppliers can charge for tariffs subject to the cap²⁹.

A household on a fixed tariff is outside the cap for the term of that contract. A household that has never switched, or has rolled onto a default rate after a fix ended, is inside it. The page on deemed contract rates covers the rate that applies before a tariff is chosen.

How the cap is set and reviewed

Ofgem reviews and sets the cap every three months based on the cost of wholesale energy⁷, and updates it on that quarterly cycle²⁷. The move to quarterly reviews was announced in August 2022, replacing six-monthly updates². Each level is published as a summary of changes for a defined period, such as 1 April to 30 June 2025 and 1 October to 31 December 2025³⁰.

The cap is built from components, and the ones that connect to financial resilience are the allowances. Ofgem has run separate reviews of wholesale costs²⁶, of operating cost and debt allowances²⁸, of historical debt-related costs⁶, and of methodology questions such as backwardation and the deadband⁵. Each of these is consulted on before decision. The effect is that the cost of running a supply business, including bad debt, is recognised in the cap rather than left to erode a supplier's balance sheet without limit, which is itself a resilience mechanism.

One worked example shows how costs already incurred are recovered. In December 2023 Ofgem set out proposals on debt-related costs including a one-off price cap adjustment of £16, to be paid between April 2024 and March 2025²⁰. That is money recovered across customers through the cap, not a charge shown separately.

Compliance with the new level is not assumed. In both the April 2025 and October 2025 summaries Ofgem stated that it "will be closely monitoring supplier compliance and will continue to take firm action against suppliers who fall short of their requirements"³⁰.

Suppliers exempt from the cap

Three energy companies are exempt from the price cap on default energy tariffs⁸. The basis of exemption is that those companies proved to Ofgem that they have higher costs because they support renewables, that they go further than existing subsidies, and that customers have actively chosen them⁸. That finding comes from an independent consumer body rather than from Ofgem's own published register.

The consequence for a household is simple: on an exempt supplier's default tariff there is no capped maximum unit rate, and the protection of the Act does not apply to it. What is being bought instead is the supplier's renewable claim, a subject dealt with under green energy tariffs and fuel mix disclosure.

How costs are shared between suppliers

Several industry mechanisms move money between suppliers rather than between a supplier and its customers, and they matter to resilience because they create obligations that a weak supplier must meet.

The clearest documented example is Feed-in Tariff levelisation: Ofgem manages the levelisation process, ensuring that each participating licensed electricity supplier pays or receives the right amount of money, so the costs of the scheme are shared fairly among suppliers³². A similar claims architecture is proposed for the Debt Relief Scheme, which Ofgem says will closely align with the approach used in the Supplier of Last Resort levy claims framework, with suppliers submitting claims to Ofgem and validated claims presented to network operators for payment¹⁴. The Supplier of Last Resort levy is the route by which the costs of a failed supplier's customers, including honoured credit balances, are spread across the market.

Switching is regulated separately in conduct terms: Ofgem introduced guaranteed standards as part of its work to improve customer experience when switching supplier³³. Those give automatic compensation for switching failures, which is a cost falling on the supplier that causes the failure.

None of these appears as a line on a domestic bill. Where costs reach households at all, the documented route is an allowance in the cap, as with the £16 one-off adjustment²⁰.

Enforcement: penalties, directions and licence modification

Ofgem's enforcement toolkit against a licensee includes issuing directions, imposing financial penalties, and modifying licence conditions where necessary³⁵. The regulator maintains a published statement of policy in respect of financial penalties and consumer redress, revised following consultation by the Authority³⁶.

The best-documented recent example is a redress payment rather than a fine: Ofgem previously used its enforcement powers for smart meters to require one energy supplier, OVO Energy, to contribute more than £1 million to a redress fund, and has been reported as considering more severe financial penalties¹¹. Parliamentary reporting of the same action describes it in the same terms³⁷.

Breach can be defined by outcome as well as conduct. Failure to achieve the annual smart meter installation targets is a breach of a supplier's licence, and Ofgem can take enforcement action against the supplier³⁷. In scheme administration, Ofgem states that where a supplier fails to meet the requirements of the ECO4 Order it may take enforcement action³⁸. Under the Debt Relief Scheme, where suppliers are in persistent breach of the licence conditions, Ofgem may take enforcement action and record non-compliance on its Supplier Performance Report¹⁴. In the Feed-in Tariff scheme, Ofgem says it takes compliance with scheme rules extremely seriously and investigates where there are concerns with supplier performance or generator compliance, taking action where necessary³².

Two things follow for a household. Enforcement is retrospective and directed at the company, so it does not prevent a failure, and redress funds are not the same as refunds to affected individuals. But the record of enforcement, together with published non-compliance, is one of the few public signals of how a supplier is being judged.

How disputes are referred to and determined by the Authority

There are two distinct dispute routes, and they should not be confused.

The first is between a supplier and the Authority, over money. Under the Debt Relief Scheme's standard condition 24B, if the licensee disputes the relevant amount determined by the Authority it follows a dispute process set out in guidance, in which it can provide further evidence, and the Authority makes the final determination³⁹. Ofgem states that suppliers may meet it and submit further evidence for reconsideration, but the final decision on all claims rests solely with Ofgem¹⁴. Timescales are scheme-specific: for ECO4 supplier administration, Ofgem has said it will notify all suppliers of its final determination no later than 30 June 2027³⁸.

The second is between a household and a supplier, and Ofgem is not the decision-maker. Ofgem generally does not intervene in individual disputes between consumers and energy businesses, including heat suppliers and operators⁹. The Energy Ombudsman is approved by Ofgem to handle service disputes in the energy sector¹⁰, and can consider complaints where suppliers obligated under the Feed-in Tariff scheme do not follow the rules set by Ofgem. Its Facilitated Complaints Resolution route covers disputes against a participating energy supplier, energy broker or heat network, residential or business⁴⁰.

Eligibility is procedural and strict. The supplier named must be the correct one to raise the dispute against and must match the company name written on the account holder's bill; the complainant must already have complained to the supplier; and there must be sufficient evidence, including the date the complaint was raised⁴¹. For newer areas such as flexibility services, the Ombudsman can consider disputes where the consumer became aware of the problem on or after 8 December 2025 and the provider was a member of the Flex Assure Domestic and Microbusiness Scheme at that time⁴⁰.

The Gas and Electricity (Consumer Complaints Handling Standards) Regulations 2008 require suppliers to provide eight week and deadlock letters⁴², which is the trigger for the Ombudsman's involvement. On remedies, the Ombudsman treats regulator-set payments such as Ofgem's guaranteed service standards payments as normally fair recognition of the problems experienced, with awards above them only in exceptional cases¹⁷. More detail sits on complaining about an energy supplier and the Energy Ombudsman.

Judging whether a supplier is financially stable

There is no public solvency score for a domestic supplier. Ofgem holds the stress test results introduced by the December 2021 action plan² and does not publish an individual pass or fail. What is visible to a household is second-order evidence: the regulator's non-compliance records under schemes such as the Debt Relief Scheme's Supplier Performance Report¹⁴, enforcement actions of the kind taken over smart meters¹¹, and customer service signals. Ofgem proposed in December 2023 to make it easier for consumers to see how good suppliers' customer service is by publishing information on their Citizens Advice star rating²⁰. The pages on energy supplier customer service ratings and energy supplier profits and margins collect what is published.

Behaviour on debt and billing is also indicative, and it is regulated. A supplier must work with a customer to set up an affordable payment plan²⁷, must give due consideration to the Ability to Pay principles including understanding individual customers' ability to pay¹⁵, and must offer extra prepayment credit for households in vulnerable circumstances to provide more breathing space while alternative payment arrangements are worked out⁴³. The grounds on which a household typically complains, late, incorrect or missing bills, back billing, being overcharged, a faulty meter, poor customer service, or a refusal to refund credit²⁴, are also the symptoms most often visible before a supplier fails.

What the rules mean for a household's energy independence

The regime protects the terms of dependence rather than removing it. A household on mains gas and grid electricity still depends on a licensed company for supply, billing and refunds, and on the market as a whole to absorb the cost when one of those companies fails. The cap limits the unit rate on a default tariff²⁹ but gives no protection on a fixed tariff or with an exempt supplier⁸, and it cannot be tilted to rescue a particular company²⁸.

Where the rules do reduce exposure, they do it narrowly and usefully. Back billing means a supplier's own error cannot produce a bill for energy used more than 12 months ago¹³. Guaranteed standards convert some failures into automatic payments¹⁷. Affordability duties constrain how debt is collected¹⁵. Delivery schemes shift money towards fabric and heating measures: the Energy Company Obligation places legal obligations on larger energy suppliers to deliver energy efficiency measures to low income and vulnerable households, funding domestic energy efficiency measures through local criteria.

Two structural gaps are worth naming. Households without a direct relationship with a domestic supplier, including those on a commercial contract or off-grid, sat outside the main support route and needed the Energy Bills Support Scheme Alternative Funding in England, Scotland and Wales⁴⁴; and tenants depend on landlords passing discounted payments on appropriately, in line with Ofgem rules⁴⁵. Northern Ireland runs a separate market with its own arrangements, covered under energy suppliers in Northern Ireland.

Reducing the exposure itself, through efficiency, on-site generation and storage, is the only route that shrinks the amount at stake. The regulatory regime decides how fairly the remaining dependence is priced and what happens when a company behind it stops trading. Both matter, and neither substitutes for the other. The broader picture is set out on energy suppliers and household energy independence and on the suppliers guide.