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Russia-Ukraine War 2026
22OCT

German spark turns firmly positive now

3 min read
19:10UTC

Germany's clean spark spread reached roughly +€30/MWh gross on 22 June, the widest positive reading of the cycle, as EDF nuclear ran unconstrained and let the thermal stack set the continental price.

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Key takeaway

Cheap gas plus a positive spark widens the winter deficit rather than closing it.

Germany's clean spark spread expanded to roughly +€30/MWh gross on 22 June, the widest positive reading of the 2026 cycle. A combined-cycle gas turbine (CCGT) plant burning gas at TTF, paying €78 per tonne for carbon and clearing power at €124.09 is comfortably in merit⁠1. The spark measures the margin a gas plant earns after fuel and carbon costs; when it turns positive, generators want to burn.

Two weeks earlier the same plant was losing €44/MWh and shutting down. The reversal began on 17 June, when power jumped and the spark flipped from minus 44 to plus 15, then extended further this week. What changed structurally is that EDF ran its French nuclear fleet without curtailment, letting Germany's thermal stack reset the continental clearing price.

The 22 June German day-ahead print of €124.09/MWh jumped about 49% day-on-day, so one reading should not carry the structural case alone⁠2. A low-wind, low-solar day lifts the gas stack up the merit order and flatters the spark; the figure needs a week of confirmation before anyone calls it a regime. The spread has nonetheless held positive on a multi-day basis since 17 June, reversing the minus 8 to minus 9 readings of early June.

Positive spark economics put commercial gas-for-power demand back into direct competition with the mandated injection operators. The injectors cannot out-bid a profitable generator for the same prompt molecules without widening their own losses, so cheap gas now drains the supply the November fill target depends on.

Deep Analysis

In plain English

When a gas power station can make money burning gas; when electricity prices are high enough to cover the cost of the gas plus a profit; it is called a "positive spark spread." Think of it as the power station's profit margin turning green. On 22 June, German gas power stations were making roughly €30 for every unit of electricity they generated. That is the widest profit margin since this crisis began. The problem is that the same gas those stations are burning is the gas Europe needs to put into underground storage tanks before winter. Europe has a rule that it must fill its gas storage to 80% by November. Right now it is at 46%, about 9 percentage points behind where it was at this point last year. When power stations compete for the same gas that storage operators need to buy, it slows the fill rate. The headline gas price looks calm at around €42 per unit, but that calm price is what makes burning gas profitable for power stations; and that profitability is pulling gas away from storage at exactly the wrong time.

Deep Analysis
Root Causes

Germany abolished its gas storage levy on 1 January 2026 with no replacement instrument. The levy had created a structural injection incentive independent of the summer-winter price strip. Without it, the only injection force is the mandated operators (EBN, CRE, ARERA) whose buying power is capped by their regulatory budgets, not by market economics.

EDF's decision to run without curtailment on 22 June reflects the commercial logic of the VNU mechanism: since French nuclear revenues sit below the €78/MWh redistribution trigger, EDF captures the full power price margin and has no incentive to curtail. When EDF runs, it suppresses French clearing below Germany's thermal stack, making Germany's CCGT margin the continental clearing price and simultaneously removing the French nuclear buffer that would otherwise soften German day-ahead.

The combination; no storage levy, mandated-only injection, EDF running uncurtailed; means the market has no commercial mechanism to prefer injection over generation when the spark turns positive. The structural precondition for the summer 2021 crunch has been recreated under a different regulatory architecture.

What could happen next?
  • Consequence

    Every week the spark spread stays positive above EUR 20/MWh, roughly 0.2 percentage points of weekly injection progress is displaced into generation, widening the November storage landing.

    Short term · Assessed
  • Risk

    If EDF announces curtailment risk for its summer nuclear fleet; cooling-water temperatures are a recurring July threat; the spark spread could reverse suddenly, removing the generation-competition dynamic but also signalling a French supply crunch.

    Short term · Assessed
  • Precedent

    Summer 2021's parallel; positive spark competing with injection, resulting in a 60% October storage level and EUR 180/MWh winter peak; sets the structural scenario the OIES 70% November floor is tracking.

    Medium term · Assessed
First Reported In

Update #20 · Spark spread now feeds the winter deficit

euenergy.live (ENTSO-E data)· 22 Jun 2026
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Written with AI from Lowdown's published reporting. Not individually reviewed by an editor. Editorial standards.