French Cal 27 Surges to Two-Year High With Gas Prices Driving Further Upside
Market participants see further gains ahead for France's front-year power contract after a gas-driven surge, with nuclear availability tightening the supply balance.
France's benchmark front-year power contract hit its highest level in more than two years on Wednesday (2026-09-09), with market participants telling Montel the rally has further to go. The primary driver, they said, is surging gas prices, with nuclear availability providing an additional upward push.3
The EEX French Cal 27 contract's breach of a two-year peak carries weight across the European grid. France is the bloc's largest electricity producer and its forward curve anchors prices in interconnected markets from Belgium to Switzerland. Sharp moves in Paris forwards tend to pull regional peers in the same direction.3
The gas market is supplying the momentum. ICE Endex TTF front-month stood at €79.29/MWh on Thursday morning (2026-09-10), with the German hub THE M+1 at €80.48/MWh. At those prices, gas-fired generation carries a marginal cost that sets the clearing price across large portions of the European power market during peak demand periods. Front-year power contracts cannot trade sustainably below their implied generation cost.3
EEX German base power was at €161.82/MWh on Thursday morning (2026-09-10), reflecting the same gas cost pressure pulling French forwards higher. The French-German interconnect means the two markets price in parallel; elevated German bids validate French forward levels and reduce the incentive for French exporters to undercut them.3
France's nuclear fleet introduces a second variable. Reduced reactor availability tightens the generation stack and raises the share of output priced against gas, compounding the signal from TTF. Montel's sources identified nuclear availability as a supporting factor in Wednesday's (2026-09-09) move, without specifying the extent of current outages. A sustained recovery in reactor output would be the most direct near-term check on the rally.3
The current move extends a pattern building since summer. The EEX French Q4 2026 contract was already trading at EUR 106.67/MWh on July 15 (2026-07-15), up EUR 2.26 on the day, lifted by Middle East escalation pulling the wider European energy complex higher, Montel reported at the time. ICE Brent crude front-month was at $107.40/bbl on Thursday (2026-09-10), keeping geopolitical risk embedded across the energy complex.2
The longer-term supply answer — whether new French nuclear capacity reduces reliance on gas-set pricing through the late 2020s — is now formally entangled with European regulatory process. The European Commission opened an investigation on Tuesday (2026-05-19) into France's proposal to subsidise six new reactors totalling 10 GW at an estimated cost of EUR 73bn. State aid inquiries of that scale rarely resolve quickly, and the outcome shapes whether France can advance financing on the terms it needs.1
But Cal 27 is not a decade-long trade. New reactors under France's programme would not be generating by 2027 regardless of what the EC decides. The contract's near-term path depends on what European gas does through the autumn injection season and whether existing French reactors recover output before demand peaks in winter. Montel's sources on Wednesday (2026-09-09) saw no immediate reason to fade the contract. Weekly EDF availability updates and the trajectory of ICE Endex TTF through the injection window will be the sharpest tests of that view.3,1