Price extraction and emission: the two unpriced bills that compound across centuries

The American political economy has run for over a century on a structural market failure: treating fossilized carbon as a free, infinite pool of raw material and the atmosphere as a costless, infinite sink for its combustion byproducts. Each side of that transaction is its own distinct liability:

• The emission externality. The cost of dumping carbon dioxide and methane into the global commons — measured today in storm damage, heat mortality, agricultural stress, displacement, and the slow grinding erosion of habitable niche.
• The marginal user cost. The opportunity cost of depleting a non-renewable capital asset that took roughly one hundred million years of biophysical compression to produce — foregone forever, for everyone, the moment a barrel is burned rather than reserved.

Standard accounting recognizes neither at honest value. Capital markets see only the marginal extraction cost. The other two components — the emission damage and the user cost — land on third parties, on the public balance sheet, and on people not yet born. The Accord's position is not that fossil fuels should be banned. Bans are blunt. The Accord's position is that the prices should reflect the bills, so that markets — the most powerful allocation mechanism the country has — can decide which uses are actually worth their full cost.

Modern integrated-assessment methods converge on a federal central Social Cost of Carbon (SCC) near $190 per metric ton of CO₂ in 2020 dollars, with peer-reviewed academic estimates ranging from about $185 to $283 depending on omitted-channel corrections and discount assumptions. At US 2025 emissions of 7.01 Gt CO₂e, the EPA central value implies roughly $1.33 trillion per year of unpriced US damage. The IMF's comprehensive global estimate of implicit + explicit fossil-fuel subsidies — counting tax preferences, fiscal support, and unpriced environmental and health damage — is $5.2–7.0 trillion per year.

Every figure in that table is a proximal-and-near-termestimate covering sea-level real-estate damage, heat mortality, agricultural loss, labor productivity, and energy-system shifts. Asset exposure is already measurable: $250 billion of US residential real estate is at routine-flooding risk at 2 ft of sea-level rise, rising to $930 billion (roughly 2% of US housing stock) at 4 ft. On the current emissions trajectory there is a 5% probability that US GDP in 2100 is at least 17% lower than under a stable-temperature baseline.

What every standard SCC omits is the deep tail: long-horizon ecosystem-service collapse, non-linear macroeconomic feedback, and the loss of the human climate niche itself. Roughly 9% of the global population — over 600 million people — has already been pushed outside the temperature range that sustained human civilization for thousands of years; at 2.7°C of warming, up to one-third of humanity faces displacement or mean-annual- temperature exposure ≥ 29°C. University of Chicago researchers (Greenstone et al.) estimated the “ultimate cost of carbon,” counting damages without a discount rate, at roughly $100,000 per ton. The EPA $190 / t is the modern proximal floor; it is not the upper bound.

The future-loss-of-use side of the bill is not a sentimental framing. It is a rigorously defined concept in resource economics. The total cost of extracting a unit of a finite resource splits into two parts:

• Marginal Extraction Cost (MEC) — the physical capital and labor cost required to pump, mine, and refine the resource. This is what private markets currently see and price.
• Marginal User Cost (MUC) — the opportunity cost of extracting a unit of a finite resource today rather than reserving it for a future period of higher scarcity. Because the global stock of subsoil fossil fuel is finite and does not regenerate on any economic timescale, extracting a barrel today permanently depletes future supply. The extractor today forgoes the higher rent that would be earned by waiting.

Hotelling's Rule (1931) states the condition for optimal intertemporal depletion: the in-ground royalty value of a non-renewable resource must grow over time at a rate equal to the market interest rate. For an equilibrium market price P, the Augmented User Cost framework gives:

Global institutions (the World Bank, multinational energy firms, sovereign accounts) have implicitly valued MUC at zero for decades. That single omission systematically biases capital allocation: extractive projects appear artificially profitable; restorative and efficiency projects are starved of comparable returns; the scarcity rent that should be held as an intergenerational asset is captured as present-period profit. Under decarbonization-aligned pathways the conclusion is sharper: when the SCC is integrated honestly, the true user cost of a significant fraction of fossil reserves is negative — the damage from burning them exceeds the value of extracting them. Those reserves are what climate economists call “unburnable carbon”: extracting them does not deplete an asset, it creates a liability larger than the asset.

The principle that polluters owe compensation for the loss of use of a public-trust resource is settled US law. Under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) and the Oil Pollution Act (OPA), Natural Resource Damages (NRD) make polluters liable for three distinct cost categories when a public-trust resource — groundwater, an estuary, a public forest — is injured:

• Primary restoration. The cost of returning the injured resource to its baseline pre-injury condition.
• Interim loss of use. Compensatory damages for the lost ecological and human services of the resource between the time of injury and the time of full restoration. Federal courts measure this using standardized methods like Habitat Equivalency Analysis (HEA): how much equivalent habitat or service must the polluter provide elsewhere to make the public whole.
• Assessment costs. The cost of conducting the scientific and economic damage assessments themselves.

The country already enforces interim-loss-of-use damages for spilled oil in a bay, contaminated groundwater under a Superfund site, and dioxin-injured public forest. The doctrine is not novel; it is in tens of thousands of pages of settled case law. What the country has not yet done is apply the same framework to the atmospheric commons — the largest public-trust resource on the continent, injured continuously, by a known set of activities, with a measurable per-unit damage. The Accord's carbon and methane fees are simply the NRD framework brought into accord with the rest of the commons.

The Accord prices the dual liability at the point of extraction and combustion, with the price ramped on an automatic statutory schedule that does not require an annual vote:

The carbon ramp brackets the proximal SCC range from the beginning ($80 / t is below the EPA central estimate at start, climbing past it within the first decade) and reaches into the mortality-adjusted and ML-adjusted estimates at the cap. The methane levy is calibrated higher per-ton because methane's 20-year global-warming potential is roughly 84× that of CO₂ and its atmospheric lifetime is short — early reductions matter disproportionately.

Revenue routing. Up to $160 / ton-equivalent of carbon revenue returns monthly as cash to every household under the Family Stipend — the carbon-fee-and-dividend pattern that makes the carbon price incidence-progressive: households below the median consumption footprint net positive, households far above net negative, and the market signal stays intact for all. All carbon revenue above the $160 / ton-equivalent rebate ceiling flows to the ring-fenced Climate Adaptation Trust. No General Fund share above the rebate cap. No tax-and-spend. The price exists to change the allocation decision, not to feed the federal budget.

The Climate Adaptation Trust is an intergenerational reserve held for the next generation across the roughly 200-year arc of climate impacts. It accumulates during the high-carbon-price window — the period during which the carbon fee ramps from $80 toward the $680 cap while fossil consumption is still meaningful — and is drawn down over the two centuries that follow to fund infrastructure mitigation as physical-climate damage materializes: coastal defense, grid hardening, water resilience, wildfire hardening.

The framing matters. The Trust is NOT perpetual: the principal is intended to be spent down across the 200-year horizon, not preserved indefinitely. The Trust is NOT framed as Exxon restitution: it does not assert wrongdoing; it prices an externality at the source. The Trust is NOT self-liquidating: declining fossil consumption means the revenue stream tapers as decarbonization succeeds.

That tapering is the architecturally important point. The carbon fee is calibrated to drive emissions toward zero; if it succeeds, the revenue stream that capitalizes the Trust shrinks toward zero with it. There will never be another opportunity to capitalize a reserve of this scale from carbon-fee revenue, because the carbon use itself will not recur. This is a one-time chance. The Trust is overseen by the Expert Panel on Climate Resilience (EPCR), statutorily insulated from General Fund appropriation, and operates under the Two-Ledger Principle — Climate Trust for cause-of-need climate, General Fund for cause-of-need civilian-life maintenance.

The Accord's mechanism is a price. It leaves fuel choice and technology choice to the market. The uses of fossil carbon that are genuinely worth their full bill — high-value petrochemical applications, peaking generation in a grid-constrained interval, aviation in the transition period — survive at the higher price. The uses that exist only because the bill is unpaid get reallocated to alternatives that price-out cheaper on the new ledger.

This is the conservative answer: restore honest prices, decline to direct the economy from a central office, treat fossil-fuel firms as actors operating rationally inside the rules they were given. The Accord's broader framing rule applies — a century of asymmetric incentives accumulated into the present arrangement; the repair is overdue maintenance.