Fault Lines 06 · Governance of planning The Failure Before the Failure
V.C. Summer, Vogtle, Boston’s Big Dig, California High-Speed Rail and Berlin Brandenburg — failures with no dramatic moment, because the project itself is the disaster. Here the fault line runs through the estimate and the financing, and the harm is billions misallocated and a category of infrastructure made un-financeable.
Every other cluster in this series has a moment — a valve, a wave, a missile, a relay — a point at which working infrastructure became broken infrastructure. This one has no such moment, because the infrastructure often never worked, or never existed. The disaster is the project: a plan so badly estimated, and a financing so badly structured, that its mere execution destroys billions and saddles the public for decades. The failure happened before the failure — in the estimate.
This is the cluster with the fewest bodies and, arguably, the widest damage, because it re-prices something abstract and enormous: society’s ability to build large things at all. When a nuclear project is abandoned half-built, when a rail line eats sixteen years and lays no track, the loss is not just the money. It is the credibility of the estimate itself — the reason capital now demands a punishing risk premium on exactly the long-lived infrastructure a decarbonising, growing world most needs. The failure before the failure is, in the end, a failure of our capacity to keep a promise about the future.
The megaproject’s estimate is not a forecast; it is a bid for approval, systematically lowballed by optimism bias and strategic misrepresentation, with the overrun risk offloaded onto ratepayers and taxpayers who never got to say no. The reform ledger of this cluster is a ledger of how infrastructure is estimated, financed and governed — and it is mostly unwritten.
Over budget, over time, under benefits — over and over
The Oxford economist Bent Flyvbjerg, who has assembled the largest database of megaprojects in the world, reduced the pattern to what he calls the iron law: megaprojects come in over budget, over time, under benefits, over and over again. His explanation has two halves that recur in every case below. The first is optimism bias — planners genuinely underestimate cost and duration, because humans systematically do (the planning fallacy). The second, less forgivable, is strategic misrepresentation — promoters deliberately lowball the number and inflate the benefit, because an honest estimate would never win approval, and once ground is broken the sunk cost traps everyone into finishing.
Both halves point to the same structural truth: the estimate is not a forecast of what the project will cost. It is a price offered to get the project approved. Everything in this cluster follows from that one substitution — a sales figure wearing an engineer’s spreadsheet — and from the mechanisms that then make someone else, usually a ratepayer or a taxpayer, absorb the difference.
Nine billion dollars for an empty field
The purest case in the series is a power plant that produced no power. In 2013, South Carolina’s SCANA and Santee Cooper began building two Westinghouse AP1000 reactors at V.C. Summer — the first new US reactors in three decades — at an estimated $9.8 billion. In July 2017, after the owners had sunk roughly $9 billion (over $10 billion with interest) and analysts projected completion would cost more than $23 billion, they abandoned the project. Westinghouse had already filed for bankruptcy. No reactor was ever finished; no electricity was ever generated. What remained was, in a prosecutor’s phrase, an eleven-billion-dollar nuclear ghost town.
$9 billion. Two reactors. Zero kilowatt-hours. Four executives in prison.
The 2007 Base Load Review Act let the utilities bill customers for the plant during construction — and keep the money even if it was never completed. Ratepayers paid some $2 billion through their bills; prosecutors found SCANA passed $500 million raised from those inflated bills to shareholders as dividends while executives concealed the project’s collapsing schedule from regulators. Four — CEO Kevin Marsh, COO Stephen Byrne, and two Westinghouse executives — later pleaded guilty and were sentenced to prison. It is the clearest statement this series contains that the project itself can be the crime scene.
The twin that finished — and proved the point anyway
Georgia made the opposite choice from South Carolina. Facing the same Westinghouse bankruptcy in 2017, its regulators let Plant Vogtle’s twin AP1000 reactors continue — and they became the only new reactors completed in the United States in a generation. That is the good news and the whole cautionary tale at once. Vogtle Units 3 and 4 came online in 2023 and 2024, roughly seven years late, at a total cost near $35 billion against an original estimate of about $14 billion — the most expensive power project in US history. Georgia Power customers paid a construction surcharge for fifteen years before the reactors made a watt, adding up to more than $1,000 for some households, and face base-rate increases to recover the rest over decades.
The verdict that matters is the regulator’s own: the Georgia Public Service Commission’s staff testified that the overruns had eliminated any economic benefit to ratepayers, who would have been better served by natural gas. Together, V.C. Summer (abandoned) and Vogtle (completed at 2.5× cost) are not two stories but one: the practical un-financeability of Western nuclear, the same re-pricing that Three Mile Island first forced in 1979 and that no new build has yet reversed. The reactor works; the business case is the ruin.
The overrun that (eventually) delivered
Boston’s Central Artery/Tunnel Project — the Big Dig — is the transport archetype, and a useful complication. Estimated at about $2.8 billion when it was sold in the early 1980s and scheduled to finish in 1998, it was completed at the end of 2007 at roughly $14.8 billion — and about $24 billion once the borrowing to pay for it is included, with the final bonds due in 2038. It was plagued by leaks, substandard-materials scandals, criminal charges, and, in 2006, the death of a motorist crushed by a falling ceiling panel.
And yet: it works. The Big Dig buried an elevated highway, cut cross-city travel times dramatically, reclaimed a waterfront and created dozens of acres of parks and a new district. That is the complication this cluster must hold honestly — a megaproject can be a governance disaster in its estimate and its execution, and still deliver real, lasting benefit. The failure was not the tunnel; it was the promise that the tunnel would cost a fifth of what it did, made to a public that would not have approved the true number. The reform question is not “should we have built it” but “why can we only get these things approved by lying about the price.”
Sixteen years, fifteen billion dollars, no track
If the Big Dig is the overrun that delivered, California’s high-speed rail is the overrun that may never deliver at all. Approved by voters in 2008 with a $33 billion price tag and a 2020 completion date for a San Francisco–Los Angeles line, it had, by 2025, consumed some $15–18 billion over sixteen years without a single mile of track laid. The full-system estimate has climbed to roughly $89–128 billion (critics cite figures past $200 billion), the scope has been cut back to a 171-mile Central Valley segment not due until 2033, and in July 2025 the federal government terminated about $4.2 billion in funding, citing “no viable path.”
This is optimism bias and strategic misrepresentation in their textbook form — the 2008 estimate was widely judged politically motivated from the start — compounded by the specific American disease of building megaprojects through litigation, fragmented approvals and year-to-year funding rather than a committed capital plan. Whether or not a train ever runs, the project has already done its most durable damage: it has become the reference case every opponent of every future rail project will cite, raising the political and financial hurdle for the next one.
Not just an Anglo-American disease
Lest the pattern look like a failure of American governance specifically, Berlin Brandenburg Airport is the correction. Germany — the byword for engineering competence — planned to open its new capital airport in 2011 at a budget near €2 billion. It opened on 31 October 2020, exactly nine years late, at roughly €7 billion, into a pandemic that left its gleaming halls empty. The proximate cause was a bespoke smoke-extraction system, designed to push smoke down through the floor rather than up, that never passed fire-safety certification; the structural cause was governance — a public operator acting as its own general contractor, overseen by a supervisory board of politicians without the technical expertise to judge the problems in front of them. A manager was jailed for bribery along the way.
BER completes the geography of the cluster and sharpens its lesson. The iron law is not cultural; it is institutional. Wherever a project’s estimate is a political instrument, its oversight is amateur, and its risk falls on someone who cannot refuse, the same failure recurs — in Columbia, in Boston, in the Central Valley, in Brandenburg.
The estimate was the failure
Across a nuclear ghost town, a completed reactor, a delivered tunnel, an unbuilt railway and an empty airport, the common fault is not in the concrete. It is in the number that launched each one — an estimate that functioned as a sales pitch, protected by optimism bias, sharpened by strategic misrepresentation, and made survivable for its authors only because the overrun risk was structurally transferred to a captive public. The Base Load Review Act and Vogtle’s construction surcharge did this explicitly for nuclear ratepayers; general-obligation bonds and federal grants do it more diffusely for taxpayers; but the mechanism is always the same: decouple the party that makes the estimate from the party that pays for its being wrong.
What this cluster permanently re-prices, therefore, is the estimate itself — and, through it, the cost of capital for long-lived infrastructure. Once the market learns that a category’s headline numbers are systematically fictional, it prices that fiction in, which is precisely why Western nuclear now struggles to be financed at all and why large public works carry ruinous contingency. The reforms are known and mostly unadopted: reference-class forecasting (estimate against the actual distribution of comparable projects, not the promoter’s model), independent and adversarial cost review, staged financing that puts capital at risk on milestones, and a hard rule that the party which estimates should bear the consequence of estimating wrong. Until the estimator has skin in the overrun, the estimate will keep being a bid, and the failure will keep happening before the failure.
Recommended → codified → corrective → still live?
| Case | Recommended | Codified (done) | Corrective action | Still a live concern? |
|---|---|---|---|---|
| V.C. Summer / Vogtle nuclear |
End “pay-in-advance” construction charging; hold executives to account; put overrun risk on builders, not ratepayers. | Criminal convictions of four V.C. Summer executives; >$4bn ratepayer relief in SC; Georgia PSC prudence review of Vogtle costs. | SCANA absorbed into Dominion; Vogtle completed with ~$8bn of overruns still passed to Georgia customers. | Very — the Base Load Review model was discredited but advance cost recovery persists elsewhere; nuclear’s cost of capital remains punishing. |
| Big Dig 2007 |
Realistic estimation; independent oversight; contractor accountability for defects. | Contractor settlements after the 2006 fatality; national attention to megaproject cost estimating. | Project delivered; debt service runs to 2038; maintenance liabilities recognised late. | Partly — delivered real benefit, but the estimating and financing lessons were not institutionalised into US practice. |
| California HSR ongoing |
Honest cost/ridership forecasting; committed capital plan; consolidated approvals; independent review. | Peer-review reporting; scope cut to a Central Valley segment; federal funding terminated (2025) after compliance findings. | ~$15–18bn spent, no track; future of the full line in doubt. | Acutely — a live case study in optimism bias; now the reference case raising the bar for all future US rail. |
| Berlin Brandenburg 2020 |
Professional general contractor; technically competent governance; finish design before building. | Management overhaul; leadership replaced; a bribery conviction. | Airport completed and opened (2020); fire system rebuilt at nine-figure cost. | Closed as a project, cautionary as a lesson — and a warning that engineering reputation is no defence against planning-governance failure. |
Flashpoint — the boom re-running the estimate Pre-failure
The conditions that produced this cluster are being recreated at speed. An AI-driven demand surge and a nuclear revival are reviving large reactor and small-modular-reactor projects on the same optimism that produced Vogtle; grid expansion, offshore wind, hydrogen and transmission megaprojects are being estimated and financed under the same pressures; and advance-cost-recovery mechanisms that charge ratepayers during construction are quietly back in fashion. Whether the reference-class discipline has actually been learned, or whether the industry is simply re-drawing the same lowballed bid, is the pre-failure question this series tracks in Flashpoints.
The nuclear cost-of-capital story begins with The Machine Couldn’t Tell the Truth, where Three Mile Island first re-priced the sector. The financing and capital themes run through the Bifrost energy and capital threads. And the counter-cases — the rare megaprojects that came in on time and to benefit — belong to The Reform That Held. Framework and method: the Fault Lines primer.
What this cluster re-prices is the estimate — and with it, society’s cost of building anything large. The durable lesson for anyone financing, approving or underwriting a megaproject is to treat the headline number as a negotiating position rather than a forecast: benchmark it against the realised cost distribution of comparable projects, not the promoter’s spreadsheet; assume the schedule is the floor and the budget the down-payment; and ask the only question that reliably predicts the outcome — who bears the overrun. When the answer is “a ratepayer or taxpayer who cannot refuse,” the overrun is nearly guaranteed, because no one with power over the estimate has any incentive to make it true. The failure before the failure is not an accident of engineering. It is the predictable result of letting a sales pitch masquerade as a plan — and it will keep re-pricing our capacity to build until the estimator, at last, has to live with the estimate.
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