Britain has spent more than a billion pounds this year paying wind farms to stop producing electricity. That is not a typo. The country built the wind, subsidized the wind, celebrated the wind, and now pays the wind to sit still, because the grid that would carry the wind to the cities was never built.
The same week the money kept flowing, a poll found that more than two-thirds of British households are actively cutting their energy use because the bills are too high. Two-thirds. While the system pays generators not to run, households are turning things off to afford the standing charge. Both facts are true. They are the same story.
The Physics No One Can Argue With
Let us start with the mechanism, because the mechanism is fair, and it exists in every electricity system on Earth.
An electricity grid is a physical machine. Supply and demand must balance at every instant, or the frequency drifts, protection systems trip, and parts of the country go dark. The grid does not care about policy announcements. It cares about physics.
Wind is the hardest source to fit into that machine, because it arrives when the weather decides, not when the country needs it. On a windy night, offshore wind farms can produce far more power than the transmission lines can physically carry from the coast to the cities. Lines have limits. You cannot push more electricity through a cable than it was built to carry.
When that happens, someone must be turned down. The system operator cannot let the lines overload, so it instructs wind farms to reduce output. Because those wind farms signed contracts and borrowed money on the assumption that they could sell what they produce, the system compensates them for the output they are told to withhold. That is a constraint payment. NESO, the National Energy System Operator, explains it in plain terms: constraint payments compensate generators for reducing output because the network cannot carry it.
This is not exotic. Every electricity system with serious wind does this. Denmark does it. Germany does it. Texas does it. When the network cannot carry the power, the balancing mechanism pays someone to stop. The mechanism is standard. The question is never whether constraint payments exist. It is how big they have grown, and why.
The Line Item
Here is how big. Constraint and thermal costs on the British system reached £1.383 billion so far this year, up 37 percent on the same period in 2025, according to NESO data tracked by the analyst Tim Harper. Wind turn-down alone, plus the replacement power bought to cover it, has passed £1 billion this year, according to The Times. The GB Renewables Map tracker counts 6,644 gigawatt-hours of generation curtailed so far in 2026, with £1.032 billion in combined curtailment and turn-up costs, of which £181.5 million is wind-specific curtailment payments at an average of about £27 per megawatt-hour. The top recipients are Seagreen and Moray East, two of the largest offshore wind farms in the country.
And the year is not over. NESO itself estimates that constraint payments could reach £3.2 billion over the next twelve months.
Now watch what the state is doing at the same time, because this is where the story stops being about physics and becomes about planning.
It is paying wind farms to stop. That is the constraint money.
It is paying gas plants to run. When the wind is turned down, the replacement power has to come from somewhere, and in Britain that somewhere is gas. The turn-up payments are part of the same £1.032 billion.
It is consulting on who should pay for the green levies that funded the wind in the first place. The levies sit on every electricity bill, on top of the energy taxes I examined in The Carbon Tax That Already Exists. A new government just cut one of them, the Climate Change Levy, because the burden had become politically unbearable - I covered that cut in The Labour PM Who Cut Your Climate Tax - and the system still needs the money.
And it is adding about 80 pence a year to every household bill to fund a compensation scheme for the people who will host the new transmission lines - the very lines that would end the constraint payments entirely.
Pause on that. The state is paying wind to stop, paying gas to run, taxing households to fund the wind, and taxing households to fund the lines that would let the wind actually flow. Four payments, four line items, all on the same bill, all pointing in different directions.
The Planning Failure, Not the Market’s
When the wind cannot flow because the lines are missing, the market did not fail. There is no market for “wind that cannot reach a customer.” The wind simply has nowhere to go. What failed is the plan: the decade of consent processes, planning inquiries, and legal challenges that turned every new transmission line into a national saga, while the wind farms themselves were consented, subsidized, and built on schedule.
That mismatch is the entire story. The generation was built to a political timetable. The grid was built to a planning timetable. The two never met, and the difference between them is paid for, every year, in constraint payments.
Britain is not alone in this. In Germany’s €600 Billion Lesson, I described a country that built wind and solar ahead of its grid and ended up paying neighbors to absorb its surplus and paying fossil plants to stand by. The British version is the same movie with a smaller budget and worse weather.
There is a pattern here worth naming. The government’s response to every energy problem it creates is another levy, another scheme, another consultation - never the one intervention that would actually fix it. In The 78% Tax on the North Sea, Anna showed a government taxing domestic energy production so heavily that investment leaves, then wondering why it must import more. Here we have a government paying wind farms not to produce while the lines to move the power sit in a planning queue. In The Tariff Shell Game, the policy kept failing and the legal authority kept changing while the policy stayed the same. The constraint system is the same shape: the state creates the scarcity, then charges the public for the cost of the scarcity it created.
The payments are not a market failure. They are the state’s own planning failure, made line-items.
Who Profits From the Missing Grid
Now apply the public-choice lens, because the money is flowing somewhere, and it is worth asking who collects it.
Gas generators collect it. Every time the wind is turned down, they are paid to turn up. A system with a weak grid is a system that buys more gas, more often, at the exact moments the wind is strongest. Their revenue depends on the wind being switched off.
Wind farms collect it too. Under the constraint system, a wind farm that cannot export is paid for the output it loses, on top of the contracts it already holds. The two largest payments go to Seagreen and Moray East - two of the biggest offshore wind farms in the country, owned by some of the largest energy companies in Europe. This is not a criticism of the farms. They signed the contracts the state offered. But notice the structure: a wind farm earns whether the electricity flows or not, so long as the lines are missing.
The network companies collect it in a quieter way. Constraint payments are the cost of not building lines. Building lines is also profitable for them, but it is slow, contested, and subject to a price control. The money flows either way. The one thing that stops the flow - a consented, built-out grid - is the one thing no single actor in the system is rewarded for delivering quickly.
The consultants collect it. A billion-pound line item generates a healthy industry of studies, forecasts, and optimization reports. Every one of them concludes that the grid needs building. None of them builds it.
And the bill payer pays for all of it. Not the wind farm owners. Not the gas plant owners. The household that the BusinessGreen poll found cutting its own energy use because the bills are too high. That household is paying the constraint payments, the turn-up payments, the green levies, and the 80 pence for the pylons. It is paying on every side of the transaction.
Who decides? The balancing desk at NESO decides what gets turned down tonight, and its job is to keep the system stable, not to minimize the decade-long cost of the missing grid. The planners at the Department for Energy Security and Net Zero, DESNZ, decide what gets built next decade, inside a system where a single transmission project can spend years in consent. And the consent machine decides whether anything gets built at all - the inquiries, the objections, the judicial reviews, each of them legitimate, each of them costing a year, all of them paid for in the end by the constraint line item.
No one is evil here. That is the point. Every actor is responding rationally to the incentives in front of them, and the sum of all that rational behavior is a billion-pound bill for doing nothing.
The £250 Bribe and the Billion-Pound Silence
The final exhibit is the pylon scheme, because it shows exactly what the public thinks of this arrangement.
To build the lines that would end the constraint payments, the government is offering households within 500 meters of the first 43 projects a compensation package of £250 a year for ten years. The whole scheme is funded by about 80 pence a year on every bill. The backlash has been immediate. The offers are called “insulting.” They are called “pitiful.” They are called “a slap in the face.”
Now hold the two figures side by side.
£250 a year to the few hundred households whose fields and gardens will carry the actual lines: a scandal. A national outrage. The papers write about it.
£1.383 billion a year paid to nobody in particular for the grid’s absence: a technical line item. A footnote in the annual report. No name on it, no face on it, spread invisibly across a million bills, and therefore no scandal at all.
That asymmetry is the whole politics of energy in one paragraph. The cost of fixing the problem is visible, concentrated, and attacked. The cost of not fixing it is invisible, diffuse, and accepted. And because the invisible cost is spread across every bill, the public pays it without ever being told what it is for.
Notice also what the 80 pence buys. It buys the lines. The lines are the one payment that would end the constraint money forever. It is the only line item on the bill that actually solves the problem, and it is the only one people are angry about.
The Question
None of this requires anyone to be stupid, corrupt, or malicious. It requires only a system that pays for the absence of a grid and treats the presence of one as an imposition. Britain has spent a decade building the generation and avoiding the lines. The bill for that choice is now over a billion pounds a year and rising, and the households paying it are the same households turning their own lights off.
Next time the government announces another gigawatt of wind, ask: what is the grid doing tonight - who is being paid to switch the wind off, who is being paid to switch the gas on, and how much of your bill is paying for both?