21SEP

FR-DE spread to €37 at higher floors

4 min read

15:34UTC

The France-Germany day-ahead spread compressed to €37.47/MWh on 7 May from €55.75 on 28 April, but only because both markets rose sharply in absolute terms.

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Key takeaway

Spread compression at higher absolute levels means more borders are now gas-set, not fewer.

The France-Germany day-ahead spread compressed to €37.47/MWh on 7 May, ENTSO-E data via euenergy.live shows, down from €55.75/MWh on 28 April . Germany cleared at €136.03/MWh, up 11% day-on-day; France cleared at €98.56/MWh, down 13%. Italy reached €135.86/MWh near parity with Germany, the Netherlands cleared at €130.51/MWh, and Spain held the lowest major-market clearing at €86.90/MWh.

ENTSO-E is the European Network of Transmission System Operators for Electricity, the Brussels-based association publishing real-time and day-ahead electricity market data. The day-ahead clearing price is the marginal-unit cost set in each country's hourly auction, and gas peaker plants are the marginal unit across most of Continental Europe outside Spain and the Nordics.

France's day-ahead has gone from €21.80/MWh on 28 April to €98.56 on 7 May, a 352% jump; Germany has risen from €77.55 to €136.03, up 75%. The narrowing therefore reflects gas-set clearing across more borders, not reduced gas exposure, and traders pricing the €55.75 print as relief now reprice relief itself at the higher floor.

EDF's April nuclear output of 29.3 TWh (+2.2 TWh year-on-year) is still suppressing French clearing relative to Germany, but the buffer is doing less work as renewables vary and gas peakers fill gaps. Flamanville-3, EDF's 1.6 GW EPR reactor in Normandy, enters its first one-year overhaul from September 2026, taking that buffer down further at the cycle's most exposed point. The Italy-Spain spread sits at €48.96/MWh on 7 May, up from €24.54 on 17 April. Spread geometry is widening at higher floors across the Continental map.

Deep Analysis

In plain English

Electricity prices in Europe are set by what is called the 'merit order': power stations compete to supply each hour, and the most expensive source that is needed to meet demand sets the price for everyone. Usually, solar and wind are cheapest, nuclear second, and gas-fired power stations most expensive. When gas stations end up setting the price, because there is not enough wind, solar, or nuclear available, the whole market clears at a much higher level. On 7 May, gas stations were setting the price across Germany, Italy, and the Netherlands simultaneously. That is why Germany hit €136/MWh and Italy €135/MWh on the same day. France has more nuclear power, which is cheaper, so it cleared lower at €98/MWh. But even France is increasingly relying on expensive gas stations on days when its nuclear plants are not running at full output. When more countries hit the gas price simultaneously, the effect goes beyond a single bad day: the floor on which all Continental power trades rises each time gas sets the marginal clearing price across multiple borders in the same hour.

Deep Analysis

Root Causes

The FR-DE spread compression from €55.75 to €37.47 reflects two markets converging toward the same marginal unit, gas peakers, rather than France remaining on its lower-cost nuclear-set merit order. France's day-ahead move from €21.80 to €98.56 over ten days reflects the same gas-peaker step-in on days when nuclear output variance and renewable intermittency create net demand above nuclear clearing capacity.

EDF's April nuclear output of 29.3 TWh (+2.2 TWh year-on-year) remains solid, but 29.3 TWh/month equates to roughly 40.7 GW of average output against nameplate capacity of 63 GW, meaning France's nuclear fleet is running at 65% average availability. On low-wind days, the margin between nuclear output and demand gets cleared by gas peakers that have a much higher marginal cost, pulling French clearing toward German clearing and compressing the spread.

The Italy-Spain spread widening from €24.54 to €48.96 since 17 April reflects Spain's persistent partial renewables insulation versus the Italian market, which is structurally more gas-dependent. The widening signals that Spain's wind and solar capacity maintains its pricing advantage on higher-price days even as the absolute floor rises across the rest of the map.

What could happen next?

Consequence
The Italy-Spain spread widening from EUR 24.54 to EUR 48.96 since 17 April confirms Spain's renewables base provides structural price protection even at elevated absolute levels, a signal relevant to industrial relocation decisions currently in progress across EU chemical and aluminium sectors.
Medium term · 0.77
Risk
Flamanville-3's September 2026 overhaul removes approximately 1.6 GW from France's nuclear fleet at the heating-season onset, increasing French clearing's gas-peaker dependence by roughly 38 GWh/day on average output days and pulling FR-DE spread convergence forward.
Medium term · 0.82
Consequence
Simultaneous gas-set clearing across Germany, Italy, and the Netherlands on 7 May signals the Continental power map is operating in a structural gas-floor pricing state, where renewable variability and nuclear oscillation alone are insufficient to prevent high-cost marginal clearing.
Short term · 0.7

Source Landscape

This story draws on neutral-leaning sources

Primary parallel: August 2022 saw Germany's day-ahead cross €400/MWh and France's exceed €800/MWh on a three-day period when gas supply tightened, nuclear availability dropped to 38% of nameplate, and wind was below seasonal average simultaneously.

The spread between those two markets compressed to under €50/MWh at that peak, the same spread-compression-at-higher-floors geometry visible on 7 May. The 2022 episode resolved when gas supply eased; the structural lesson was that both absolute level and spread can move independently of each other.

Counter-parallel: In March 2024, the FR-DE spread widened to €45/MWh on French nuclear surplus output (EDF production above 45 TWh that month), demonstrating that the spread can stay wide at moderate absolute levels when French nuclear runs at capacity.

Flamanville-3's September 2026 entry into one-year overhaul recreates the downside of that dynamic: nuclear buffer shrinks precisely when autumn demand rises, removing the spread-widening mechanism that represents France's structural electricity-market advantage.

Day-ahead prices settle industrial offtake contracts, utility hedging positions, and retail tariff pass-throughs depending on contract structure. The €136/MWh Germany clearing on 7 May represents a spot cost roughly 3.4x the €40/MWh level that European industrial gas-price competitiveness benchmarks typically use as a baseline.

For electricity-intensive German industrial users, aluminium smelting, chlorine production, electrochemical processes, the €136/MWh spot print either activates interruptibility clauses (if the contract allows it) or triggers a direct loss against forward-hedged positions. For utility procurement desks with Q3–Q4 physical delivery obligations, each day the actual clearing runs above the forward-hedged level reduces the hedge effectiveness.

Flamanville-3's September 2026 overhaul entry removes approximately 1.6 GW from France's nuclear fleet at the onset of the heating season. At 1.6 GW absent, French clearing increases its dependence on gas peakers by roughly 38 GWh/day on average nuclear-output days, pulling FR-DE spread convergence forward by two months relative to the historic seasonal pattern.

Consensus view: Aurora Energy Research (Oxford) assesses that Continental European power markets entered a 'gas-floor pricing state' in Q2 2026: when renewable variability and nuclear-output oscillation are insufficient to set clearing prices, gas peakers step in across multiple interconnected markets in the same hour.

The €136/MWh Germany and €135/MWh Italy simultaneous clearing on 7 May reflects a single-day gas-set clearing state across three of the five largest EU markets, Germany, Italy, Netherlands, simultaneously, which is structurally different from isolated gas-set hours in a single country.

Counter-view: Montel Analytics (Norwegian energy market data firm) argues the 7 May simultaneous clearing was a weather-driven single-day event: low wind across Central Europe coincided with a net hydro reduction in Austria and Switzerland, pushing the merit order onto gas peakers across the hour cluster.

On their intraday reconstruction, renewable generation returned to clearing levels in the following session without any structural change in the underlying merit order. The absolute price level is not a new floor; it is a one-day peak in a variable series.

Key tension: Whether the 7 May simultaneous high-price clearing across Germany, Italy, and the Netherlands represents a new structural floor in the Continental gas-set clearing state, or a weather-coincidence event that will revert as renewables return.

Sources:euenergy.live (relaying ENTSO-E data)·euenergy.live (relaying ENTSO-E data)·EDF

Mentions:France →Germany →EDF →Italy →Spain →Netherlands →ENTSOG →Flamanville-3 →Switzerland →Austria →

First Reported In

Update #8 · Storage 34.3 as 12 May test nears; Hammerfest silent

euenergy.live (relaying ENTSO-E data)· 8 May 2026

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Causes and effects

Caused by

France-Germany May power spread doubles record

FR-DE spread compressed from EUR 55.75 on 28 April (ID:2885) to EUR 37.47 on 7 May as both markets rose in absolute terms

Occurred 28 Apr 2026

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This Event

FR-DE spread to €37 at higher floors

Spread narrowing here is gas-set clearing across more borders, not falling gas exposure.

Led to

France swings 88% as FR-DE spread halves

FR-DE spread compressed from EUR 37.47 on 7 May to EUR 23.68 on 12 May, continuing the post-28 April compression trajectory.

Occurred 12 May 2026

Read story →

TTF retraces to €47.69 on Trump

Front-month returns toward the EUR 43-47/MWh band that held in early May.

Occurred 22 May 2026

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FR-DE day-ahead spread doubles to €46.58

FR-DE power spread reversal coincides with TTF returning to the EUR 43-47 band; gas-set carbon stack on German clearing.

Occurred 21 May 2026

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