UK Could Have Built Trillion-Pound Oil Fund, Treasury Calculates
Chancellor John Healey launches a £2bn Energy Wealth Fund as Treasury modelling puts a figure on decades of North Sea receipts
By AXY Business Desk ·
Key points
- Treasury officials have, for the first time, calculated that UK North Sea receipts invested over time could have grown to roughly a trillion pounds.
- Chancellor John Healey announced an Energy Wealth Fund on Wednesday, starting with £2bn taken from the National Wealth Fund.
- The Treasury model assumed £200bn in historical North Sea receipts were invested with no withdrawals and grew at a rate comparable to Norway's.
- The announcement came in the same week the national debt reached £3tn for the first time.
- Norway's oil and gas fund is cited at $2.4tn, and it is the benchmark British policymakers return to most often.
For the first time, Treasury officials have calculated how much the United Kingdom could have built by investing its North Sea oil and gas receipts. Their answer, based on internal modelling, is roughly a trillion pounds. The figure was released on Wednesday, the same day Chancellor John Healey announced the creation of an Energy Wealth Fund at the Jackdaw gas approval announcement. The new fund starts with £2bn diverted from the existing National Wealth Fund.
The number is striking, but it describes something that does not exist. It is a measure of what the country did not save, not a balance sitting in an account somewhere. It puts a price on decades in which North Sea money went into the ordinary budget rather than into a fund that could keep growing for future generations.
Healey framed the announcement as a chance to start correcting that. He said: "The proceeds of this oil and gas coming ashore now can be invested for the future generations." He went further when he looked back at the past, saying: "If we had done this when North Sea oil was first discovered in the 1980s, we'd have a British Sovereign Wealth Fund now that would be worth probably a trillion pounds."
How Treasury Arrived at a Trillion Pounds
The calculation is simpler than the headline suggests. Treasury officials took the UK's historical North Sea receipts, which they put at £200bn, and assumed all of that money had been invested. The model assumed no withdrawals were ever made. It also assumed the money grew at a rate comparable to Norway's.
Each of those assumptions does a lot of work. A sovereign wealth fund is a pot of state-owned investments, usually built from revenue that a country cannot count on forever. When such a pot is left alone, the gains on the gains stack up over time, which is why a sum of £200bn can end up looking like a trillion. The Treasury's model is essentially a picture of how much of that compounding effect the UK gave up.
The model also has clear limits. Real funds face withdrawals, pressure from governments who want to spend, and years when markets go nowhere. A fund that never pays out a penny and grows at a steady, Norwegian-style pace is a best-case picture. It is useful as a yardstick for what discipline might have been worth. It is not a sum the UK could collect today.
The £200bn Question Behind the Model
The £200bn figure is the number that matters most, because everything else in the calculation is built on top of it. It represents the North Sea receipts the UK has collected over the years, the tax and royalty money that flowed to the Exchequer as oil and gas came out of the ground. Those receipts were spent as they arrived, helping to fund public services and reduce the need for borrowing at various points.
That is the ordinary way a government handles revenue that arrives in lumps. The difference with a sovereign wealth fund is that the money is set aside and invested, and the spending is held back. A government that does this accepts that some money will sit unused for years, in return for a larger pot later. The UK did not take that route, and the Treasury's new calculation is a way of showing what that choice cost in theory.
For ordinary households, the trade-off is not abstract. Money spent in a given year on services is money not available for later. Money saved and invested becomes a cushion, and a source of income, that future governments can draw on when oil and gas revenues fall. The trillion-pound figure is an attempt to make that trade-off visible.
Why Norway Keeps Coming Up
Norway is the benchmark in almost every discussion of this kind. It sits on the same North Sea, drew on the same kind of geology and sea, and pumped oil and gas for decades. The key difference lies in what happened to the money. Norway set up a dedicated fund to hold its petroleum revenue, and that fund has grown into one of the largest of its kind.
The chancellor's comparison draws on that contrast. Norway's fund is cited at $2.4tn, a number that puts the scale of the gap in plain terms. A selection of other energy exporters, mainly in the Gulf, have also built multi-trillion funds from oil and gas revenues. Norway is not the only example, but it is the one British policymakers return to most often.
That is why the question has run for so long. If Norway could build such a fund from the same sea, where did the UK's equivalent go? The short answer is that the UK spent its oil and gas money as it came in, and never built a structure to hold it back. The longer answer is a run of budget decisions, each of which looked reasonable at the time.
Healey's Energy Wealth Fund Starts With £2bn
The new Energy Wealth Fund is small at the start. Its £2bn is being taken from the existing National Wealth Fund, not raised as fresh money. That means the government is moving capital that already exists into a new vehicle, rather than building a large pot from nothing.
Whether a £2bn fund can grow into something resembling Norway's depends on how much is added to it over time. Without new inflows, the fund will grow only as fast as its investments do. The trillion-pound comparison would then remain a thought experiment rather than a real target that is being met.
Healey's wording points to the future. He spoke of "the proceeds of this oil and gas coming ashore now", which suggests the fund is meant to receive future North Sea income as well as serve as a symbol. Whether that promise is written into rules that bind future governments is the question that will decide whether the fund matters in practice.
A Fund Announced the Week Debt Hit £3tn
The announcement came in a week when the national debt also reached £3tn for the first time. The timing gives the story a sharp edge. The government is borrowing heavily while looking back at money it could have saved.
The Treasury has not suggested that a sovereign wealth fund would reduce debt on its own. A fund holds assets, and its returns can help over time, but it does not cancel borrowing directly. What the fund offers ministers is an argument: that future energy revenue can be turned into lasting assets rather than used up in day-to-day spending. The next test is whether that argument survives the usual pressure on budgets, when spending needs are loud and savings have no immediate constituency.
For readers, the link is easy to draw. A country with £3tn of debt is asking how to cope with the interest bill and the future burden. A country that once had the chance to build a large fund is asking why it did not. Both questions land on the same desk in the Treasury.
What the Jackdaw Row Means for North Sea Money
The fund was announced at the Jackdaw gas approval event, which ties it directly to the wider argument over North Sea production. Jackdaw is a gas project, and the decision around it has become political. A related headline in the same reporting says Burnham defends the Jackdaw decision, while Badenoch urges the prime minister to overturn a ban on new oil and gas licences.
That tension is why the fund matters beyond the Treasury. If the government keeps approving North Sea projects, it will keep collecting revenue that could feed a fund. If new licences stop, the case for a fund rests on money that is no longer flowing at the same rate. Either way, the central question is how much of the money the UK earns from its energy is held back for later.
The argument also has a fairness dimension. Money from a finite resource is, in a sense, owed to the people who will live after it runs out. A fund is one way of making that promise concrete. Without one, the benefit of the resource is mostly felt in the years when it is extracted.
Whether the UK Can Still Build One
The immediate next step is the operation of the new Energy Wealth Fund, which begins with £2bn moved from the National Wealth Fund. The coming months will show how it is governed, how it invests, and whether more money is added to it. Those details will tell readers far more than the headline figure does.
A Treasury insider gave a blunt verdict on the lost opportunity. They described it as a "missed opportunity", and said: "had we systematically invested those receipts, we could have built a huge national asset for future generations." The same insider said: "Norway demonstrates the power of long-term investment: the government wants to learn from that principle, rather than copy its model wholesale."
That distinction matters. The government is not signalling that it will copy Norway's model in full. It is signalling that it wants the principle of long-term investment, adapted to UK conditions. The details of that adaptation, including how much is saved, when withdrawals are allowed, and who decides, will determine whether the principle becomes practice.
The bigger test is whether the UK commits to saving future energy revenue on a steady basis. Norway's fund grew because of a long-running decision to hold money back, year after year. A UK fund would need the same discipline to avoid repeating the gap the Treasury has now measured.
For ordinary readers, the story comes down to a simple question about public money. The North Sea earned the country large sums over many years. The Treasury now says that, if those sums had been saved and left to grow, they might have been worth close to a trillion pounds. What the government does next with its £2bn, and with any future energy revenue, will show whether that lesson has been learned.
Questions and answers
How much could the UK have raised from North Sea oil and gas?
Treasury officials calculated that the UK could have built a fund worth roughly a trillion pounds. The model assumed £200bn in historical North Sea receipts was invested with no withdrawals and grew at a rate comparable to Norway's.
What is the Energy Wealth Fund?
Chancellor John Healey announced the Energy Wealth Fund on Wednesday, at the Jackdaw gas approval announcement. It starts with £2bn diverted from the existing National Wealth Fund.
Why is Norway used as a comparison?
Norway sits on the same North Sea and has built a fund cited at $2.4tn from its oil and gas revenues. The Treasury model uses Norway's growth rate as its benchmark for what the UK could have achieved.
Topics: John Healey, Energy Wealth Fund, North Sea, National Wealth Fund, HM Treasury, Norway sovereign wealth fund, UK national debt
Sources: BBC Business RSS
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