13SEP

German spark spread hits cycle worst

3 min read

13:27UTC

German day-ahead power fell 41 per cent between Friday and Monday as onshore wind rose sevenfold. The clean spark spread went to minus EUR 40 to minus EUR 46/MWh on cheaper gas, not dearer.

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ConflictAssessed

Key takeaway

Cheaper gas made German gas plants less viable, because power fell twice as far as fuel.

German day-ahead power cleared EUR 76.97/MWh on Monday 27 July, down 41 per cent from EUR 130.97 on Friday 24 July, while onshore wind rose sevenfold from 2.97 GW to 22.56 GW across the same four sessions. ¹ ² Both figures come from SMARD, the German electricity market data platform run under Bundesnetzagentur licence, via the Fraunhofer ISE energy-charts service. Monday's number is the arithmetic mean of 88 of 96 quarter-hourly prints, a partial day.

The fuel leg fell too, but nothing like as far. TTF front-month gas gave back about 8 per cent over the same window. Put both legs through the method this desk published on 20 July, a 55 to 58 per cent efficiency band and 0.2 tCO2 per MWh, and the German clean spark spread now sits between minus EUR 40.42 and minus EUR 45.91/MWh. A week ago the identical calculation returned minus EUR 14.81 to minus EUR 20.37 . It reproduces that published figure exactly, which is the reason to trust the new one.

So the deepest inversion of the cycle arrived on cheaper fuel. That inverts the usual reading. When gas spikes and power lags, as it did through the Strait of Hormuz premium that took TTF to EUR 55 in mid-July , the inversion mean-reverts once the fuel shock passes. This one cannot revert on the fuel leg, because the fuel leg has already fallen. It reverts only when the wind drops, and the German cavern operators reached the same conclusion from the storage side on 21 July when prompt injection collapsed .

The counter-argument deserves stating before anyone else states it. 26 July was a Sunday, Monday's figure is incomplete, and a weekend demand trough plus one windy Monday is a thin base for calling anything the worst of a cycle. Two answers. The 20 July comparator was itself a Monday, so the week-on-week move is like-for-like. And this is a claim about where the spread sits now, not a forecast that it stays there.

Deep Analysis

In plain English

A power station that burns gas has two things that decide whether it makes money: what the gas costs, and what it gets paid for the electricity it produces. This week both fell, but the electricity price fell much further and much faster than the gas price did, because a lot more wind turned than expected. That leaves German gas power stations worse off even though their fuel got cheaper, because cheaper fuel does not help if nobody needs to buy the electricity a gas plant makes.

Deep Analysis

Root Causes

Germany's dispatchable gas fleet now sits at the top of a merit order whose bottom 25 to 30 GW of onshore wind can appear or disappear inside 48 hours, as the sevenfold swing from 2.97 GW to 22.56 GW just demonstrated; when that swing floods the market, gas is pushed off the clearing price entirely, regardless of what the fuel itself costs.

The capacity-payment fix for exactly this problem, the StromVKG auction that opened bids on 21 July with a submission deadline of 8 September, has not yet cleared EU state-aid approval; the mechanism designed to protect this fleet's economics is itself running behind the market condition it exists to address.

What could happen next?

Consequence
German gas plant stays out of the merit order through the rest of the injection season unless wind drops sharply, pushing any supply gap onto imports, coal or reserve capacity instead.
Risk
Any spark-spread hedge structured on the assumption that a fuel-price fall improves gas-plant economics now carries a demonstrated counter-example from this window.

Source Landscape

This story draws on neutral-leaning sources from United States

United States

Primary parallel: The UK closed several CCGT stations between 2011 and 2015, including Centrica's Killingholme and King's Lynn plants, when sustained low wholesale prices left gas-fired generation loss-making against fixed costs; the 2014 Capacity Market auction exists specifically to pay dispatchable plant for availability rather than energy sold, the same fix Germany's StromVKG programme is now attempting.

Counter-parallel: Germany's own clean spark spread went as negative as roughly minus EUR 44/MWh on 15 June 2026 (ID:4215), then recovered to plus EUR 30 within a week (ID:4431) once demand and nuclear output shifted, without any capacity-market intervention; a negative print does not automatically become a standing condition.

A clean spark spread converts three separately traded instruments, power, TTF Gas and EUA carbon, into one number a desk can hedge as a single position. At minus EUR 40 to minus EUR 46/MWh, holding that position long power and short gas and carbon means being paid to not generate; the trade that actually explains this week's move is the power leg on its own, since gas moved only 8 per cent against power's 41.

The 24 July near-breakeven print showed the fleet's break-even power price sits around EUR 126 to EUR 132/MWh at EUR 63.50 gas and EUR 83.40 carbon. At 27 July's cheaper EUR 58.40 gas, that break-even falls only to roughly EUR 117 to EUR 123, a EUR 5 to EUR 8 shift dwarfed by the EUR 54 fall in the price the fleet is actually paid.

Consensus view: Bundesnetzagentur's own StromVKG capacity-auction design, opened for bids on 21 July without EU state-aid clearance, is built on the premise that the energy-only market cannot reliably keep dispatchable gas plant available; a wind-driven collapse to minus EUR 40 to minus EUR 45.91/MWh is the exact failure the mechanism was written to insure against.

Counter-view: A market built purely on merit-order logic would treat this differently: 22.56 GW of zero-marginal-cost onshore wind pushing gas off the clearing price is the price signal working as intended, and a capacity payment layered on top risks paying twice for the same megawatt of availability.

Key tension: Whether StromVKG corrects a genuine gap in dispatchable capacity or duplicates a signal the merit order is already sending correctly.

Sources:SMARD / Bundesnetzagentur via Fraunhofer ISE energy-charts·SMARD / Bundesnetzagentur via Fraunhofer ISE energy-charts·TradingEconomics

Mentions:Germany →TTF →EUA →CCGT →SMARD →Bundesnetzagentur →StromVKG →Fraunhofer ISE →Strait of Hormuz →

First Reported In

Update #30 · Wind, not peace, sank the German spark

SMARD / Bundesnetzagentur via Fraunhofer ISE energy-charts· 27 Jul 2026

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Causes and effects

Caused by

German gas plants priced out of merit

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 19 Jul 2026

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Strike halt lands across two days

The US-Iran strike halt cut TTF 8 per cent, the fuel-leg component of the spark-spread move that the wind surge dominated.

Occurred 24 Jul 2026

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This Event

German spark spread hits cycle worst

A spark spread this deep on falling fuel prices tells German gas plants their problem is weather, not the gas price.

Led to

German caverns quit the prompt-gas bid

The deepened spark-spread collapse confirms the storage economics that had already pushed German caverns out of the prompt gas market on 21 July (ID:5232).

Occurred 21 Jul 2026

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German gas plants back in profit

The wind collapse of 28-31 July reversed the sevenfold wind surge that had driven German day-ahead down 41 percent on 27 July.

Occurred 30 Jul 2026

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Different Perspectives

United States

OFAC gazetted two wind-down licences expiring four days apart and adopted a presumption of denial for new Iran sanctions requests, while the State Department separately sanctioned Kataib Hezbollah and Hezbollah financial networks. Washington is closing legal channels on a published calendar rather than all at once.

United Arab Emirates

Crown Prince Sheikh Khaled bin Mohamed bin Zayed Al Nahyan met Iran's president in New Delhi, the first known face-to-face since the war began, weeks after cutting all Emirati trade and financial dealings with Iran. Abu Dhabi is running economic pressure and diplomatic contact at the same time.

Houthis

Houthi forces completed the capture of Yemen's Red Sea coast and Mayun island this week, an offensive a Houthi official confirmed alongside Yemeni government officers. The gain locks in the Bab al-Mandeb closure to Saudi crude declared as an embargo on 23 July.

Iran

Foreign Ministry spokesman Esmail Baghaei credited Iranian diplomacy backed by military strength for pushing neighbours to negotiate, citing the Oman safe-passage talks, while addressing none of the pipeline strike, the Iraqi dismissals or Saudi restraint directly.

Iraq

Prime Minister Ali al-Zaidi sacked two Maysan officials, closed and reopened three Iran border crossings inside three days, and approved a joint inquiry with Tehran into the launch site on his own territory. He is managing a militia network he does not fully control rather than confronting it.

Saudi Arabia

Riyadh's Foreign Ministry confirmed the Petroline strike, named no attacker, and said it would hold off retaliating at Iraq's request while reserving the right to act on its own sovereignty. It expects Baghdad's inquiry, not a Saudi strike, to be the next move.