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Iran Conflict 2026
21SEP

EUA carbon breaks €80 as gas sags

4 min read
15:34UTC

EUA settled €80.73 on 25 June, its first clean break above €80, while TTF sagged to €40.75. Carbon now floors a German gas plant's marginal cost near €98/MWh whatever gas does.

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Key takeaway

Carbon sets a €98/MWh floor under German gas plants regardless of how soft gas gets.

EUA carbon settled €80.73/tonne on 25 June, its first clean break above €80⁠1. An EUA is one permit to emit a tonne of CO2 under the EU Emissions Trading System, and every gas plant must buy them: a combined-cycle turbine pays for gas plus roughly 0.2 tonnes of carbon for each MWh it generates. The same day, the Dutch gas benchmark TTF sagged to €40.75/MWh⁠2, so the two legs of generation cost pulled apart, carbon up and gas down.

Carbon now sets a hard floor under gas-fired power. At €80.73 the carbon leg alone lifts a German plant's marginal cost to roughly €98/MWh even with gas this soft. That €98 floor is the carbon component of the spark spread the heatwave blew out in the lead: when German day-ahead ran to its peak it was the gap above €98 that made the margin, and it is the same floor plants will defend once the weather premium drains.

EUA had already clawed back to €78.22 on 4 June, reversing the sell-off that followed the Commission's May ETS-benchmark revision, and the 25 June break extended that recovery on supply grounds. The annual cap falls about 180 Mt this year and CBAM keeps withdrawing free allocation, so the bid is structural rather than gas-driven. Optimism on US-Iran de-escalation and the UK-EU summit added risk appetite on top.

Deep Analysis

In plain English

The EU carbon market works by issuing a fixed number of permits to emit carbon dioxide. Every year, the total number of permits falls, making them scarcer and more expensive to buy. On 25 June, the price of one permit to emit one tonne of CO2 broke above €80 for the first time in 2026. At the same time, European gas prices fell to €40.75 per megawatt-hour because Middle East supply risks looked less severe than two weeks earlier. Carbon permits at €80.73 per tonne contributed more to gas-plant running costs than the gas fuel itself did on 25 June. Electricity from gas plants therefore stayed expensive regardless of the gas price. Steel, cement, and aluminium manufacturers also face higher compliance costs above €80 EUA, since they must buy permits for their own industrial emissions.

Deep Analysis
Root Causes

The Phase IV ETS reform package imposes a 4.4% annual cap reduction from 2023 onward, compared with 2.2% in Phase III. At 2025 verified emissions of approximately 1.33 Gt, the 2026 cap covers supply by roughly 180 Mt less than the prior year's cap, compressing banked allowance reserves that previously acted as a soft price ceiling.

CBAM's 2026 implementation removes 2.5% of free allowances for steel, cement, and aluminium sectors. These sectors previously received full allocation for their 2025 output; the 2.5% cut requires them to purchase marginal allowances at market rates, adding approximately 12-15 Mt of demand at current activity levels.

This demand is independent of power-sector or gas-price dynamics, creating a structural bid floor that TTF weakness cannot erode and that diverges from the carbon-gas correlation most spread models assume.

What could happen next?
  • Consequence

    EUR 80.73 EUA sets a carbon-only CCGT floor near EUR 98/MWh that persists regardless of TTF direction; any TTF weakness that historically softened CCGT marginal cost is now more than offset by carbon strength, removing the gas-power correlation that most spread models price at this level.

    Immediate · Assessed
  • Opportunity

    Clean dark spreads turn structurally negative above EUR 75 EUA, removing hard-coal capacity from the German merit order and increasing gas-fired generation's share of residual load; desks holding long gas generation positions benefit from coal-to-gas switching before any TTF recovery.

    Short term · Assessed
  • Risk

    CBAM's 5% free-allocation removal in 2027 adds a further 25-30 Mt of structural demand to the EUA market; if the 2026 break above EUR 80 reflects only the 2026 2.5% CBAM tranche, the 2027 step produces a second structural bid and current Q4 2027 EUA forwards may understate the trajectory.

    Medium term · Reported
First Reported In

Update #21 · Heat cracks the French-nuclear floor

ICE / TradingEconomics· 26 Jun 2026
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Written with AI from Lowdown's published reporting. Not individually reviewed by an editor. Editorial standards.