The cost of doing nothing (UK)

Every planning refusal has a price. Nobody itemises it.

Refusal is also a decision

A planning objection to a solar farm is a document of remarkable precision. It counts acres. It commissions glint-and-glare studies. It maps skylark territories, measures the distance to the nearest listed building, and works out the percentage of Grade 3a agricultural land to one decimal place. About the costs of building, objections are never vague.

About the costs of not building, they say nothing at all. The option of refusal does not appear in the ledger even as a zero. A zero would at least be a claim — a figure somebody had calculated and could be asked to defend. What the ledger actually contains is a blank: no information at all. And a blank cell, in a planning decision as in any other accounting, is silently read as zero. Nobody ever decides that doing nothing is free; the assumption simply goes unexamined, because the status quo spreads its costs across people who will never connect them to a planning committee, and hides them from every footpath.

This article puts numbers in that blank.

The unit of account throughout is a solar farm of two hundred acres — the conservative end of what is actually being contested. The applications drawing objection letters in 2026 typically run from two hundred acres upward; the largest schemes, consented at national level, run to thousands. (Most farms already operating in the UK are far smaller, a legacy of the subsidy rules of the 2010s — but nobody is writing letters about those.) All rounding in what follows goes against the argument.

At current construction densities of about a third of a megawatt per acre, a two-hundred-acre solar farm is rated at roughly 65 megawatts. In the British climate — accounting for night, winter, and cloud — a solar farm delivers on average about eleven per cent of its rated output over the course of a year. For this farm, that is around 60 gigawatt-hours of electricity in its first year: the annual consumption of about twenty-two thousand homes. Panels age, though, so the accounting assumes output falling by half a per cent a year over a thirty-five-year operating life — shorter than the forty years planning consents typically allow, longer than the panel warranty. Over that lifetime, the farm produces about two terawatt-hours.

The refused electricity gets generated anyway

Refusing the application does not make demand disappear. Twenty-two thousand homes still switch their kettles on, and on the British grid of 2026 it is possible to say with confidence what generates the power when they do. Coal is gone from the system entirely. Nuclear runs at a fixed level and cannot be turned up to meet a shortfall. Wind and solar generate when the weather permits, regardless of planning decisions elsewhere. The plant that responds at the margin is, in the great majority of hours, a gas-fired power station. Gas supplied 28 per cent of British electricity in 2025, some 91 terawatt-hours, and it holds that position precisely because it is the flexible source that fills whatever gap the others leave.

This is not a claim that a megawatt of solar capacity replaces a megawatt of gas capacity. The 60 gigawatt-hours a refused farm would have delivered arrives in intermittent blocks, not on demand, and the gas fleet provides the flexibility solar alone cannot. But every one of those gigawatt-hours, whenever it arrives, is one a gas station somewhere does not have to generate. The fleet stays; it simply burns less.

So the true content of a refusal is this: a commitment to burn the natural gas equivalent of some 60 gigawatt-hours of electricity a year, for what would have been the farm's operating life. The refusal letter does not phrase it that way. It should. What follows is what that gas costs.

The direct cost is in deaths and serious illness

Burning gas produces nitrogen oxides and fine particulate matter, whose effects on the heart and lungs are settled medicine, documented for decades and accepted by every relevant medical body.

The standard quantification is the Lancet's Europe-wide analysis of the health effects of electricity generation (Markandya and Wilkinson, 2007). For gas, the central figures are approximately 2.8 deaths and 30 cases of serious illness — chronic bronchitis, respiratory and cardiac hospital admissions — for every terawatt-hour generated, alongside several hundred minor respiratory episodes.

At the published rates, then, generating sixty gigawatt-hours causes roughly 0.17 deaths and 1.8 serious illnesses each year. Across the thirty-five-year lifespan of the farm, that gives between five and six statistical deaths; around sixty cases of serious respiratory or cardiovascular illness; and some fourteen hundred minor respiratory episodes of the kind that keep children home from school and adults away from work.

The figures themselves deserve scrutiny. The Lancet rates are European averages from 2007, and modern British gas plants burn cleaner than that average. If cleaner modern plant halves the rates, the refusal still costs nearly three statistical deaths and thirty serious illnesses. Halved again, it is smaller still, but it is not nothing — and nothing is what a blank cell is read as.

The other column. Building the farm is not costless either. Manufacturing and installing the panels generates emissions and carries other attendant risks, and an honest ledger records them too. But the appendix shows the farm's construction paying back its carbon in a year or two against a thirty-five-year life — a difference of well over an order of magnitude. The point is not that refusal is uniquely harmful, only that both columns have real entries, and just one of them is ever filled in.

What a refusal buys is an unchanged view. What it costs, on this first count alone, is several statistical deaths, several dozen serious illnesses, and some fourteen hundred lesser ones, spread over the decades the farm would have stood. The second part of the bill is larger. But before presenting it, there is the question of who receives the first — because it is not, as it happens, the people who wrote the objection letters.

The bill is paid by people who were never asked

It is perfectly reasonable for a community to weigh costs and benefits as it sees them, and decide accordingly. The trouble is that it does not get to see all the costs. A planning application only ever puts the local ones in front of it — the view, the unchanged field, the temporary disruption of construction.

The deaths and serious illnesses of the previous section fall somewhere else entirely: on the people who live near where the gas fleet stands. The residents of Pembroke in Wales, of the Thames Estuary near the Medway towns, of the Humber, are the ones who bear those costs, and they had no say in the decision. They weren't consulted, they weren't even notified, and they have no standing in any planning system. They cannot comment on an application settled in a committee room far from where they live, even though they have more at stake in it than almost anyone.

The objection letter and the hospital admission are entries in the same account. They are simply held by different people, and only one of the two knows the account exists.

Accepting mainstream climate science multiplies the bill by thirty

Everything so far stands on conventional medicine alone. What follows adds a further cost, for those who accept mainstream climate science; it does not revise what came before. If you reject the climate science, the bill from the previous sections still stands in full — this section only makes it larger.

The 60 gigawatt-hours a year that a refusal reassigns to gas carries a second cost: roughly 22,000 tonnes of carbon dioxide a year at the outset, some 745,000 tonnes over the farm's lifetime. Carbon dioxide's death toll is harder to count than a hospital admission's, but it has been counted. The most widely cited estimate — Bressler's "mortality cost of carbon" (Nature Communications, 2021), built on the same modelling that underpins official carbon pricing — puts one excess death this century, worldwide, for every 4,434 tonnes of carbon dioxide emitted.

One division later: 745,000 tonnes is, at the central estimate, on the order of one hundred and seventy statistical deaths — roughly thirty times the direct air-quality toll.

That number needs its caveats stated just as prominently. It is a central estimate with wide error bars, from a family of models with well-known limitations; it depends on future emissions, which policy may still change; and the deaths it counts fall across the whole world and the whole century, not on any single community a British planning committee will ever hear from. Reasonable people can halve it or double it. But no reading of the literature supports entering it as a blank.

The same maths for wind. A single modern onshore turbine — around 5 megawatts, at the load factor new British onshore wind is expected to achieve — delivers close to 16 gigawatt-hours a year, displacing some 5,800 tonnes of carbon dioxide. Bressler's constant is 4,434 tonnes per death. A refused turbine costs well over one statistical death for every year it does not turn.

The ledger, side by side

Here is the complete ledger for a two-hundred-acre application — the left column as objection letters actually itemise it, the right column as this article has now priced it.

The middle column is not a typographical error. It is the objection's actual accounting, reproduced faithfully: it contains nothing, and every planning decision that weighs the left column against it is reading that nothing as a zero. The point is not that the left column is illegitimate — several of its entries are real, and deserve the scrutiny they get. The point is that a comparison between a filled column and a blank one is not a comparison. It is a conclusion reached in advance.

The missing column stays missing because its victims have no faces

Why does the blank persist? Not, for the most part, through bad faith. The economist Thomas Schelling identified the mechanism in 1968: human sympathy, and the institutions built on it, respond powerfully to an identifiable victim and hardly at all to a statistical one — even when the statistical victims are more numerous and just as dead. A named individual in danger can reorganise a community; a change in a mortality rate reorganises nothing. Half a century of research since has confirmed how deep the asymmetry runs.

Planning consultation is that asymmetry, institutionalised. It runs on harms a camera can capture: the hedgerow has a location, the skylark has a survey reference, the view has a viewpoint, and each has a champion with a name and address at the top of an objection letter. The statistical victims of refusal never enter the process — not because anyone deliberately excludes them, but because no one thinks to include them, and even if someone did, no one could identify them, even in principle. No resident of the Medway towns can establish that their admission was one of those the gas caused; their own consultant cannot tell them; the connection exists only at the level of the population, and populations do not write objection letters. The system is not weighing their interests badly. It has no way for their interests to appear at all.

This is where sudden-onset environmentalism finds its institutional home. The selective precision — exquisite care over hypothetical local harms, silence over real systemic ones — is not just a rhetorical habit of individual objectors. It is the grain of the process itself: every form, incentive, and consultation notice runs in the direction of the visible column. The objectors did not create the blank. They inherited it, and it flatters their case, so it goes unremarked.

Honest accounting is not the same as automatic approval

Nothing here argues that every solar application deserves consent. Some sites are genuinely wrong — wrong land, wrong place, wrong scheme — and "Solar Spreadsheets" has already made the case that the build side of the ledger deserves honest entries rather than boosterish ones. A ledger doctored in either direction is the same offence.

The argument here is narrower, and harder to escape: a decision made with one column blank is not a decision. It is an accounting error with a mortality rate. A committee that refuses a two-hundred-acre application may, on a full ledger, still be right to refuse it — but it should do so knowing that the refusal is itself a purchase, and knowing the price: several deaths and several dozen serious illnesses on conventional medicine alone; some hundred and seventy deaths on mainstream climate science; all of it billed to people who never saw the consultation notice.

None of this asks a single committee to carry the weight of the energy transition, either. A committee prices a single entry; it is the regional ledger — the one "Solar Spreadsheets" argued for — where the entries accumulate and the accounting becomes unavoidable. A region that refuses ten such applications has not made ten separate judgements about ten fields; it has declined twenty terawatt-hours of lifetime generation, one blank cell at a time. And the familiar comfort — that any one refusal changes nothing, because the capacity will simply be built elsewhere — is the statistical victim seen from the other side: no committee owns any particular death, and together they own all of them. A defence that works only if nobody else uses it is not a defence.

The question before a planning committee, then, is never whether two hundred acres of pasture is worth disturbing — nor even whether this committee must answer for the whole bill. It is whether the entry it is about to write into the regional ledger is priced or blank; and whether the people writing it would price it differently if the bill were addressed to them.

Appendix: showing the working

The farm. Two hundred acres at ~3 acres per megawatt of modern construction (DESNZ land-use analysis, September 2024: fleet-wide median 5.6 acres/MW, dominated by older stock; new builds 2–4 acres/MW) gives ~65 MW. Sizing note: 200 acres is the conservative end of current contested applications — a typical recent scheme just under the former 50 MW consenting threshold occupies 150–250 acres, and nationally consented schemes run to many hundreds. At a UK solar capacity factor of ~11 per cent: ~60 GWh delivered in year one; household equivalence at ~2,700 kWh/year (Ofgem typical domestic consumption value, medium user): ~22,000 homes. Note that DESNZ's average annual domestic consumption figure (~3,300 kWh, which includes higher-consuming households) would give ~18,000 homes; the Ofgem TDCV is used as the more commonly cited "typical home" figure. Operating life taken as 35 years (planning consents typically permit 40; module warranties run 25–30) with output degrading at 0.5 per cent/year, giving a lifetime average of ~92 per cent of initial output and total delivery of ~2.0 TWh.

The counterfactual. UK grid, 2025: coal 0% (Ratcliffe-on-Soar closed 30 September 2024); gas 28% (91 TWh) and the marginal generator in most hours (Carbon Brief analysis of NESO/DESNZ data, January 2026). Displaced generation is therefore taken as CCGT. Battery storage (~7 GW operational as of early 2026) does not change this: batteries have no primary generation of their own, are net consumers of electricity once round-trip losses are counted, and mainly time-shift renewable output rather than substitute for gas at the margin. If anything the dependency runs the other way: battery revenue is largely arbitrage between abundant, cheap generating hours and scarce, expensive ones, a spread that solar and wind intermittency creates — so the current storage build-out is substantially a downstream consequence of renewable deployment, and a refusal marginally weakens the investment case for the very fleet that will eventually let gas be retired. This assumption weakens as the grid decarbonises — a point available only to those arguing for faster building.

Direct health costs — the mechanism. Gas combustion emits nitrogen oxides and fine particulate matter (PM2.5). The causal link from these pollutants to cardiovascular and respiratory disease, and to premature death, is long established and not scientifically contested: it is the settled position of the World Health Organization (whose 2021 global air quality guidelines tightened the recommended PM2.5 limits), the UK's Committee on the Medical Effects of Air Pollutants (COMEAP), and the Royal College of Physicians. COMEAP puts the annual UK mortality burden of human-made air pollution at the equivalent of roughly 28,000–36,000 deaths; the Royal College of Physicians' 2016 report put it in the order of 40,000. (COMEAP cautions that the separate PM2.5 and NO2 estimates must not be summed, as that would overstate the combined effect; the higher of the two is used instead — a conservatism worth noting given this article's general practice.) This is the basis for treating the harms below as documented fact rather than projection.

Direct health costs. Markandya & Wilkinson, "Electricity generation and health," The Lancet 370 (2007): for gas, ~2.8 deaths, ~30 serious illnesses, several hundred minor illness episodes per TWh (European averages). Applied to ~2.0 TWh lifetime delivery: ~5.6 deaths, ~60 serious illnesses, ~1,400 minor episodes. Stress test: modern British CCGT is cleaner than the 2007 European average; halving the rates leaves ~2.8 deaths and ~30 serious illnesses. The conclusion depends on the sign, not the precision. Denomination note: these rates support counting deaths and serious illness at the order-of-magnitude level; no defensible method attributes individual childhood asthma cases to a farm-sized share of gas generation, and this article makes no such claim.

Climate mortality. CCGT at ~370 gCO₂/kWh: ~22,000 tonnes in year one, ~745,000 tonnes over the 2.0 TWh lifetime. Bressler, "The mortality cost of carbon," Nature Communications 12 (2021): one excess death globally, 2020–2100, per 4,434 tonnes (central estimate, baseline emissions scenario; wide uncertainty bounds discussed in the paper). Yield: ~168 statistical deaths, quoted as ~170. This figure counts combustion CO₂ only and is therefore conservative: it excludes upstream methane leakage from extraction, processing, and transport. Supply-chain methane emissions vary widely — by orders of magnitude across routes and operators (Balcombe et al., ACS Sustainable Chemistry & Engineering 5, 2017) — but on current European estimates the leakage adds a burden of very roughly a third on top of direct combustion CO₂ today, falling to under a tenth with best-available abatement (Nature Communications 14, 2023). The margin is higher for imported LNG, on which the UK increasingly relies, than for piped gas. Counting it would increase the climate column, not reduce it.

The wind coda. A representative new onshore turbine of ~5 MW at the DESNZ new-build onshore load factor of 36 per cent (CfD methodology, delivery years 2027–2031; higher than the ~27 per cent fleet-wide historical average, reflecting better siting and larger modern turbines) delivers ~15.8 GWh/year, displacing ~5,800 tonnes CO₂/year. At Bressler's 4,434 tonnes per death, that is ~1.3 statistical deaths per turbine per year — the body's "well over one." (An earlier draft used the fleet-average ~27 per cent factor, which yields a near-exact one death per turbine-year; that coincidence was an artefact of the lower figure and has not been retained, since 36 per cent is the correct rate for a new turbine.) Direct air-quality costs add roughly a further death and nine serious illnesses over a 25-year turbine life.

Why wind is priced per turbine, not per acre. Wind turbine spacing is wide and land use per installed megawatt varies enormously by source — anywhere from roughly 20 to over 200 acres per MW, depending on whether the figure counts only the turbine pad and access track or the full spacing area within the site boundary. Scout Moor, a real Lancashire wind farm, occupies 1,347 acres for 65 MW: about 21 acres per MW. At that density, two hundred acres of wind holds only one or two turbines, not a comparable "wind farm" — so an acreage-matched comparison to the solar farm above would rest on a single arbitrary choice of spacing assumption and swing by a wide margin depending on it. The per-turbine, per-year figure avoids that problem, since a turbine's rating and capacity factor are well defined regardless of how much land sits between it and its neighbours. For the avoidance of doubt: wind turbines carry a direct air-quality cost exactly as gas-displacing generation does, on the same logic as the solar figures above — it is the land-use denominator that doesn't translate cleanly, not the absence of a health cost.

Pre-empted rebuttal: intermittency. This accounting does not claim that a megawatt of solar retires a megawatt of gas capacity. The 60 GWh figure is delivered energy; the 11 per cent capacity factor has already paid the intermittency bill. Each solar gigawatt-hour, when generated, is a gigawatt-hour of gas not burned. The gas fleet continues to exist and to provide flexibility; it simply runs less.

Pre-empted rebuttal: "put it on rooftops instead." The refused farm is the option on the table. The hypothetical rooftop scheme invoked against it has no planning application, no financing, no grid connection, and no completion date — and the objector proposing it is rarely found campaigning for it once the farm is refused. An alternative that materialises only as an argument against the real proposal is not an alternative; it is the blank column with better production values.

Pre-empted rebuttal: "building it has a carbon cost too." True, but small and already favourable. Utility-scale solar PV in the UK pays back its embodied carbon in roughly one to three years, against the 35-year operating life assumed here — at most a high-single-digit percentage reduction in lifetime avoided emissions, not enough to threaten the sign of the argument. The comparison this article draws is in any case already asymmetric in the objector's favour: it costs no embodied carbon for the gas plant's own construction, extraction infrastructure, or steel. Accounting for construction emissions on both sides evenly would not close the gap; it would widen it.

Pre-empted rebuttal: "it will simply be built somewhere else." The displacement defence assumes an unconstrained supply of substitute sites, which does not exist: grid connections, viable land, and capital are all finite, and a refusal removes consented capacity from a bounded pipeline rather than moving it. UK refusal rates are real and rising — of solar capacity decided at local-authority level in 2025, close to a third was refused, and in some months nearly half (Solar Media Market Research, 2025). A partial complication, stated honestly: most refused projects that go to appeal are later approved (in 2025, 26 of 29 appeals succeeded), so for those, refusal delays rather than prevents. But delay is not free. Every year a farm does not exist is a year the displaced generation runs on gas, at the annual mortality rate computed above — so a refusal later overturned still buys the full yearly cost for each year of delay. The defence is in any case self-refuting when universalised: if every refusal were costless because the capacity lands elsewhere, the national accounts would show no shortfall against the Clean Power 2030 solar target of 45–47 GW — but a shortfall is exactly what they show. Cornwall Insight forecasts UK solar reaching only ~29 GW by 2030, a ~16 GW gap and the largest underperformance of any generation technology in the plan.

Drafted in collaboration with Claude (Anthropic).