Carbon Pricing and Climate Finance
The Carbon Fee
Assessed upstream at mine mouth, wellhead, or port of entry. All fossil fuels and process emissions converted to CO₂ equivalent (CH₄ at 28× GWP-100; N₂O at 265×). Rate: $80/ton Year 1, escalating $40/ton annually to a hard cap of $680/ton (~Year 15). The $40/yr escalation is not subject to macro-governor adjustment except under the Input Shield (energy price surge >15% in a quarter pauses escalation one year; paused escalation added to following year—terminal rate reached regardless).
The Energy Stipend (Rebate)
Fully rebated until the fee exceeds $160/ton (~Year 3). Thereafter the rebate pool is frozen at the level generated by $160/ton × remaining emissions. Each adult receives one share; children under 18 receive half a share; rural residents receive 1.3× share. Bottom 70% of households are net beneficiaries of the combined carbon fee and stipend.
Climate Adaptation Trust (Ring-Fenced)
All carbon revenue above the frozen Stipend flows to the Trust, administered by the Expert Panel on Climate Resilience (EPCR). Year 4 inflow ~$360B; peak inflow ~$600B+ (Years 8–12). Cumulative accumulation ~$4.5T by Year 10, ~$8.25T over 25 years. Trust assets invested in special-issue Treasury securities; interest savings accrue to General Fund. Funds flood zone transition (insurance phase-out, building code enforcement), coastal defense, water systems, underground transmission, grid hardening. Self-liquidating: revenue approaches zero as emissions approach zero.
Methane Accountability and Reduction Levy (MARL)
Prices CH₄ independently at $1,200/ton escalating to $2,880/ton. Covers fossil fuel venting/leakage, livestock enteric fermentation (with verified feedstock adjustment credits), and manure management. Intentional dumping: 5× penalty. No molecule pays both MARL and Carbon Fee.
Carbon Border Adjustment Mechanism (CBAM)
Imports from nations without equivalent carbon pricing pay the difference at the border. WTO Article XX(b)/(g) legal basis. Revenue to General Fund, partially allocated to the Governance Recovery Fund. Creates the "retained revenue" argument: a nation that prices carbon domestically avoids the CBAM and keeps the revenue.
Scoring Endnote 8: Carbon Revenue and Climate Trust
US CO₂e emissions baseline: ~5.0 Gt (EPA 2024).
Carbon fee schedule: $80 (Yr1), $120 (Yr2), $160 (Yr3), $200 (Yr4), ... $480 (Yr10).
Emissions trajectory (short-run elasticity -0.3): 4.8 Gt (Yr1), 4.5 (Yr2), 4.2 (Yr3), 3.9 (Yr4), 3.5 (Yr5), 3.2 (Yr6), 3.0 (Yr7), 2.8 (Yr8), 2.7 (Yr9), 2.6 (Yr10).
Gross carbon revenue: Yr1 $0.38T, Yr3 $0.67T, Yr5 $0.84T, Yr7 $0.96T, Yr10 $1.25T.
Stipend pool (frozen at $160/ton × remaining emissions): Yr3 $0.67T (=rebate cap reached), Yr4 $0.72T, Yr5 $0.56T, ... Yr10 $0.42T. Declining as emissions decline.
Net carbon revenue above stipend (= Climate Trust inflow): Yr4 $0.08T, Yr5 $0.28T, Yr7 $0.56T, Yr10 $0.83T.
⚠ Carbon elasticity of -0.3 (short-run) is consensus but the trajectory matters enormously. At -0.2 (lower response), emissions decline slower → more revenue, larger Trust. At -0.5 (faster transition), emissions decline faster → less revenue but the policy succeeds sooner.
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