3AUG

German gas plants priced out of merit

3 min read

10:16UTC

German day-ahead cleared EUR 103.16/MWh on Monday against a CCGT marginal cost of EUR 118 to EUR 124, inverting the clean spark spread and pushing the fleet off-merit into the worst July injection pace in six years.

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ConflictAssessed

Key takeaway

German CCGTs now lose up to EUR 21 per MWh, freeing gas for caverns filling 17% slower.

German day-ahead power cleared an average of EUR 103.16/MWh on Monday 20 July, inside a range running from EUR 0.00 to EUR 194.77 ¹. Solar and wind oversupply held the 03:00 to 06:00 block at zero for four hours; the evening peak carried the top of the range.

Put the three verified inputs together. Monday's TTF settlement, burned through a modern combined-cycle gas turbine at 55 to 58% efficiency, costs EUR 102 to EUR 108 per MWh of electricity. EUA carbon at EUR 80.00 ², at roughly 0.2 tonnes per MWh, adds another EUR 16. Marginal cost therefore lands between EUR 118 and EUR 124 against EUR 103.16 of revenue, putting the clean spark spread between minus EUR 15 and minus EUR 21. Four sessions earlier it was positive, on German day-ahead at EUR 156 and carbon at EUR 80.14 .

Only part of that swing belongs to Hormuz, and the decomposition deserves stating rather than glossing. The fuel leg carries the conflict premium and nothing else: gas has risen since 15 July, worth EUR 7 to EUR 8 of extra generation cost, while carbon has not moved at all. The power leg did the rest, falling more than EUR 50 from Thursday's print, and a Monday in late July carrying four hours of zero-priced solar has an ordinary seasonal component behind it that no conflict explains. Call the split roughly 13% conflict, 87% weather and calendar. Anyone selling this as a pure Hormuz effect is selling about EUR 8 of it and hoping nobody checks the other EUR 50.

Either way the fleet stays off-merit, and the storage consequence does not change. Gas that would have gone into German turbines now has somewhere else to go, and the caverns need it: net EU injections since 1 July are running 17% below last year, the slowest July fill pace in six years against the 5 July baseline ³. The bloc still reached 52.49% on 15 July on data from GIE, the Gas Infrastructure Europe body that runs the AGSI+ transparency platform ⁴, so the level keeps climbing while the pace falls behind. Whether a spread this negative converts into a faster injection rate over the coming week is the practical test of whether demand destruction buys anything for the November floor.

Deep Analysis

In plain English

A "clean spark spread" is the profit a gas-fired power plant makes from selling electricity after paying for its gas and its carbon permits. When that number goes negative, as it did in Germany on 20 July, running the plant loses money. Two things happened at once: a burst of solar power pushed midday electricity prices to zero for four hours, and gas costs stayed high because of the Hormuz standoff in the Gulf. Plant operators are stuck between cheap power they cannot profit from and expensive fuel they still have to buy, which is why the country's gas fleet went "off-merit", meaning it is too costly to run right now.

Deep Analysis

Root Causes

A four-hour window of zero-priced solar generation removes the hours in which CCGT plants can recover their marginal cost, and German gas units face real start-up costs that make cycling off and back on within a single day expensive, so operators are stuck holding capacity that clears below cost rather than shutting down for a few hours.

The fuel side compounds the squeeze but is not the main driver: marginal cost of EUR 118 to EUR 124/MWh sits well above the EUR 103.16 day-ahead print, and only roughly EUR 7 to EUR 8/MWh of that gap traces to the Hormuz-linked gas premium. The remainder, more than EUR 50/MWh, is the power leg falling from Thursday's heat print into a Monday session with weak demand and heavy solar output.

What could happen next?

Consequence
CCGT operators facing repeated negative spark spreads have a stronger incentive to bid into StromVKG's capacity auctions for guaranteed standby revenue rather than rely on wholesale margins alone.
Risk
If the fuel-cost leg reverses once Hormuz risk eases while the solar-driven power leg persists through summer, the spread could stay negative even after gas prices fall, exposing operators who assumed today's loss was fuel-driven and temporary.

Source Landscape

This story draws on neutral-leaning sources

Primary parallel: German day-ahead power itself flipped the clean spark spread from roughly negative on 14 July to positive by 16 July as cooling demand rose under the same heat dome . The fleet has already shown it can swing from off-merit to on-merit and back inside a single week.

Counter-parallel: Over 6 to 10 July, German and French baseload rose together rather than diverging, squeezing Germany's spread without inverting it . Heat and solar do not always push CCGT fully off-merit; sometimes they only narrow the margin, which argues against reading every hot spell as a guaranteed inversion.

Consensus view: The Oxford Institute for Energy Studies has tracked German CCGT running margins collapsing repeatedly this window as renewables build-out compresses the hours in which gas plants can clear the market, framing today's inversion as the fleet's structural exposure showing through rather than a one-off.

Counter-view: The IEA's July Oil Market Report flags that the same Hormuz-linked escalation clouding its 2027 supply outlook is also the reason gas-fired fuel costs are elevated at all; on that reading the spread's fuel leg, not its power leg, is the part genuinely exposed to reversal if the strait standoff eases.

Key tension: Whether the dominant driver is Germany's own thin flexibility to shut CCGT capacity around a midday solar glut, a structural condition, or the volatile fuel-cost input from the Gulf, which could unwind the inversion within days rather than months.

Sources:SMARD / Bundesnetzagentur via energy-charts.info·ICE via Investing.com

Mentions:TTF →EUA →CCGT →Oil Market Report →Germany →GIE AGSI+ →

First Reported In

Update #28 · Hormuz premium inverts the German spark spread

SMARD / Bundesnetzagentur via energy-charts.info· 20 Jul 2026

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Causes and effects

Caused by

German power climbs to EUR 156, spark flips

The positive clean spark spread recorded on 16 July inverted to negative by 20 July as gas and carbon costs outpaced power revenue.

Occurred 16 Jul 2026

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EUA carbon slips back below EUR 81

EUA's EUR 80.14 close on 16 July fed into the same EUR 16 carbon floor that holds marginal cost above power revenue on 20 July.

Occurred 16 Jul 2026

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This Event

German gas plants priced out of merit

A negative clean spark spread removes gas-fired demand at the exact point in the calendar when Europe needs every molecule going into storage.

Led to

German caverns quit the prompt-gas bid

The 20 July negative spark made cavern injection uneconomic, stalling German storage buying.

Occurred 21 Jul 2026

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German spark spread hits cycle worst

The 20 July spark-spread inversion (ID:5152) deepened into the cycle's worst print as wind, not the earlier gas/carbon premium, took over as the driver.

Occurred 26 Jul 2026

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German gas plants back in profit

The clean spark spread flipped positive, reversing the negative spread recorded on 20 July when gas and carbon costs outpaced power.

Occurred 30 Jul 2026

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Different Perspectives

Belarus

Minsk announced completion of its own 37th Separate Airborne Assault Brigade near Gomel, under plans dating to August 2025 rather than a response to any single frontline event this window, keeping its hedge of hosting the war without formally joining Russia's mobilisation drive.

European Union / Operation IRINI states

Italy, Greece and Poland boarded the sanctioned tanker Toa Payoh off Pantelleria under a standing EU mandate rather than a national decision, extending enforcement from the Channel and Baltic and the Black Sea and Azov into the Mediterranean. Italian Defence Minister Guido Crosetto praised the crew; the captain's refusal to produce documentation left detention unconfirmed.

Poland and the NATO eastern flank

Warsaw's Coordination Team said explicitly its forces tracked the 30 July missile incursion and were ready to shoot it down, then flew air cover for an EU tanker interdiction three days later. Poland is simultaneously the war's nearest spillover victim and a contributor to enforcing sanctions against the state causing that spillover.

Ukraine (government, defence establishment and civilians)

Kyiv runs its manpower crisis through acting Defence Minister Yevhen Khmara, whose formal appointment waits for parliament's 18 August return, and a fortnight-old Commander-in-Chief, Mykhailo Drapatyi. Reported attacks on enlistment officers rose from 5 cases in 2022 to 341 in 2025, reaching Odesa's Territorial Recruitment Centre staff directly on 2 August.

Kremlin and Russian domestic economic voices

Moscow has not addressed July's advance-rate collapse or Sberbank's OFZ warning; Novak's diary ran to OPEC+ quota diplomacy with no diesel item logged since 15 July. Economist Nikolai Korzhenevsky calls the Central Bank's RUB 2.3tn in bank lending effectively deficit monetisation, a framing Sberbank's Skvortsov, with his own institutional interest, has not disputed.

IAEA (Rafael Grossi)

IAEA inspectors logged Zaporizhzhia's 22nd loss of off-site power, ten of them in the last three months, after a thunderstorm knocked out the plant's sole surviving backup line. Grossi reads the accelerating frequency, not any single outage, as the safety signal now that the plant's redundancy is exhausted.