How much did the Bulb collapse cost the taxpayer?

The cost of the rescue did not fall on the Treasury in the way a bank bailout would. The government financed the administration to keep Bulb trading, and the cost was recovered from the energy industry, which means it reached households through bills rather than through general taxation. The National Audit Office has reported on the wider cost of supplier failures to billpayers³.

What follows sets out what happened, why the special administration route was used, where the money went, how Bulb compares with other failures, and what became of its customers.

What happened when Bulb collapsed

Bulb went bust in the autumn of 2021 as a result of the energy market crisis⁴. It ceased trading in November 2021, and over a million customers were eventually transferred to Octopus⁴. The company became insolvent during SEG Year 2 and was placed into a Special Administration Regime, meaning it continued to trade under an administrator rather than stopping⁶.

That continuation matters. In an ordinary failure, supply stops and customers are moved to a new supplier. In special administration, the company keeps operating, the administrator runs it, and customers stay where they are until a buyer or a transfer is arranged. Ofgem's guidance describes the special administrator running the company until it is rescued, for example through restructuring⁷.

For households, the practical effect was continuity. Supply was not interrupted, accounts kept running, and the administration was designed to hold the customer base together as a saleable asset rather than scatter it across the market. That is the trade-off: a slower, more expensive process in exchange for not moving 1.7 million accounts at once.

The wider context is that Bulb was one of many failures in the same period. Energy UK has described supplier failures adding £2.7bn in additional cost to energy bills and disruption to many customers⁵. Bulb was the largest single case, but not the only one.

The bailout cost to the taxpayer

The headline answer is that the cost was carried by the energy industry and passed to bills, not met from general taxation as a one-off Treasury expense. The government provided the financing to keep Bulb trading during administration, and that outlay was structured to be recovered through a levy on suppliers.

The scale of the wider support to households in the same period shows why the Bulb figure is often confused with the total. More than £33 billion was spent across the Energy Price Guarantee and the Energy Bills Support Scheme⁸. Those are separate from the Bulb rescue and much larger. The Energy Bills Support Scheme alone came to £11,692 million in total, of which £11,364 million was for Great Britain³. The Energy Bills Relief Scheme totalled £7,483 million³.

For a household trying to understand what it paid, the honest answer is that the cost is not itemised on a bill. It sits inside the standing charge and unit rate as a component of supplier costs, alongside the price cap's allowance for wholesale costs and operating costs. Ofgem's review of wholesale costs in the price cap sets out how those allowances are built⁹.

The recovery mechanism is why the phrase "taxpayer bailout" is imprecise. The taxpayer underwrote the process; the billpayer funded it. Both statements are true, and they describe different parts of the same arrangement.

Why Bulb went into special administration, not the Supplier of Last Resort

When an energy supplier ceases trading, Ofgem will appoint another supplier to provide their energy supply¹⁰. That is the Supplier of Last Resort process, and it is the default. Ofgem appoints a new supplier for customers of a failed supplier, vetted and appointed as quickly as possible⁴.

Bulb was too big for that. It was too large to go into the Supplier of Last Resort system, so it was placed into special administration until its customer base was acquired by Octopus Energy the following year⁴. The Department took Bulb Energy into SAR because, with 1.6 million customers, it was too big to go through SOLR².

The mechanics of the alternative are set out in Ofgem's guidance. The special administrator will run the company until it is rescued, for example through restructuring⁷. Customer protections still apply: your credit balance will be protected unless you are a business⁷.

The reason size matters is operational. A Supplier of Last Resort transfer moves a customer base to a new supplier's systems, tariffs and billing. Doing that for 1.7 million accounts in one step, in a market where many suppliers were themselves under financial strain, risked pushing the receiving supplier into difficulty. Special administration spread the process over time and kept the customer base intact as an asset to be sold.

For households, the difference is mostly invisible. Supply continues, the administrator bills, and the eventual transfer happens when a buyer is found. The visible difference is the length of time before a new supplier's name appears on the bill.

Where the money went: the Energy Fund and Bulb's operations under administration

The phrase "Energy Fund" is used loosely. There is no single fund by that name that paid for Bulb. Support for households in energy difficulty runs through several separate routes, and the Bulb administration was financed separately again.

Ofgem's guidance on help with energy bills describes supplier schemes and grants as paying off energy debt¹¹. The Fuel Bank Foundation offers emergency financial support and practical advice for people struggling to pay for energy¹². Local authorities have also received government funding from a total of £742 million to support households with energy bills and other support¹³.

In Northern Ireland the route is different. The Northern Ireland Sustainable Energy Programme provides funding for various energy saving schemes such as boiler upgrades, LED light bulbs and draught proofing¹⁴. That reflects the separate market and the different support architecture there.

On the Bulb side specifically, the money went into running the company: buying wholesale energy to supply 1.7 million customers, paying staff, maintaining billing systems, and paying the administrator. That is the cost that was recovered from the industry. It is not a grant to households and it is not a payment to Bulb's shareholders, who were wiped out.

How the Bulb bailout compares with other supplier failures

Bulb was the largest failure by customer numbers, but the aggregate cost of the crisis came from many smaller ones. Energy UK's figure of £2.7bn in additional cost to energy bills covers supplier failures as a group⁵.

The comparison that matters for households is between the cost of failure and the cost of the support schemes running alongside it. The Energy Bills Support Scheme came to £11,692 million in total³. The Energy Bills Relief Scheme totalled £7,483 million³. Those dwarf any single supplier rescue.

There is also a forward-looking cost. The Debt Relief Scheme impact assessment puts supplier reimbursement at 87.5 to 132.4 £m across cost-neutral to high-cost scenarios¹⁵. That is a separate policy intervention, but it shows the pattern: interventions in the retail energy market are typically funded through suppliers and recovered from bills.

For a household, the practical comparison is between the size of the levy component in bills and the size of the headline support schemes. The levy element from supplier failures is real but small relative to the £33 billion of direct bill support⁸. The Bulb case is the most visible because it was the largest single company, not because it was the largest single cost.

What happened to Bulb's customers and the Octopus takeover

Bulb ceased trading in November 2021 with over a million customers eventually transferred to Octopus⁴. Octopus Energy took on 1.5 million customers from failed supplier Bulb¹. The company also took on 1.3 million from Shell¹.

That made Octopus the largest single recipient of customers from failed or exiting suppliers. The transfer ended the special administration, because the customer base had been sold and there was nothing left for the administrator to run.

For former Bulb customers, the protections that applied during administration carried through. Credit balances were protected unless the customer was a business⁷. The transfer itself did not require households to do anything: the accounts moved, the supply continued, and the new supplier's name appeared on the bill.

The wider lesson for households is about dependence. A supplier failure does not cut a home off, and it does not change the wires or pipes. What it changes is who sends the bill and who holds the credit balance. The physical dependence on the grid and the gas network is unaffected by which company is named on the account.

That is the honest limit of what switching or supplier choice delivers for energy independence. A household can change who it buys from, and it can be protected when that company fails, but it cannot change the fact that supply arrives through a network it does not own. The Bulb case shows the system working as designed for customers, at a cost that was spread across everyone's bills.