Skip to content
You can now search across every topic, entity and event.What's new
European Energy Markets
23JUL

Spain power jumps 148% in two days on low wind

3 min read
19:31UTC

Spanish day-ahead cleared at EUR 71.91/MWh, up from EUR 29 on 13 April, as a generation-side shortfall pushed gas peakers into the stack.

← Back to Germany's caverns stop buying gasJump to analysis ↓
EconomicDeveloping
Key takeaway

Iberian insulation is real over a year and fragile over a day.

Spain cleared at EUR 71.91/MWh in day-ahead power on 15 April, up 148% from EUR 29/MWh on 13 April and compressing the Italy-Spain spread from EUR 104 on Monday to EUR 70 on Wednesday, a 33% narrowing in two sessions 1. Italy cleared at EUR 141.90/MWh, France at EUR 72.41, Germany at EUR 117.53; the ENTSO-E feed shows the Italy-Germany gap widening while the Franco-Iberian pair moved to near-parity.

The prior briefing had positioned the Italy-Spain gap as the canonical case of merit-order divergence, with gas setting Italy's price the majority of hours and wind plus solar setting Spain's . A 148% one-way move over two sessions is the mechanism in reverse: a low-wind day compounded by hydro de-rating pushed Spanish gas-fired peakers up the merit order, clearing into a gas-set stack. Iberian insulation is a probability-weighted advantage across a year, not a constant across a day.

France printing EUR 45 beneath Germany on the same day points to the setup through Q2: French nuclear surplus behaves like a southern-European asset, and the Franco-Iberian interconnector becomes the arbitrage of the week on any repeat low-wind print.

The implication for industrial relocation arguments that lean on Iberian power-cost structure is that those arguments survive only if the user can tolerate the dispersion around the mean. On a low-wind day Spain prices into the gas stack; on a high-wind day it prices off the renewables stack. The day-ahead print, not the monthly average, is what settles P&L.

Deep Analysis

In plain English

Spain's electricity system runs mainly on wind and solar power, which in a normal week means Spanish electricity is among the cheapest in Europe. On 15 April, the wind effectively stopped. In the European electricity market, the price is set by the most expensive generator needed to meet demand at any given hour. When wind generation drops, Spain needs to fire up gas power stations instead, and those stations charge what the gas costs them to run. At current gas prices, that is roughly EUR 70/MWh. Two days earlier, Spain was running almost entirely on renewables and paying EUR 29/MWh. The 148% jump is entirely the result of weather, not any policy or supply disruption. It will reverse once wind picks up.

Deep Analysis
Root Causes

Spain's power price architecture creates an inherent volatility asymmetry. On high-renewables days, Spain is largely insulated from gas prices (gas sets the clearing price only 15% of hours per year per Ember/). On low-renewables days, the transition to gas-clearing is total and abrupt because no intermediate generation stack exists between renewables and peakers.

The Iberian peninsula's limited interconnection with France (approximately 2.8 GW southbound capacity) means French nuclear surplus cannot fully absorb demand during merit-order switches, so gas peakers are forced into merit rather than imports covering the gap.

What could happen next?
  • Consequence

    The Italy-Spain spread compression from EUR 104 to EUR 70 on 15 April demonstrates that weather volatility can narrow the insulation benefit Spain's renewable buildout provides, temporarily making Spain's price profile resemble gas-heavy markets.

Sources:euenergy.live (ENTSO-E feed)·euenergy.live (ENTSO-E feed)
Mentions:Russia →Italy →France →Day-ahead market →Portugal →Prima →Germany →TTF →Ember →
First Reported In

Update #2 · TTF EUR 42 as Russian LNG ban enters range

euenergy.live (ENTSO-E feed)· 15 Apr 2026
Read original →
Causes and effects
Caused by
Power prices split EUR 131 north-south
Spain's 148% surge on 15 April is the opposite extreme from the EUR 29/MWh low on 13 April, demonstrating the volatility underlying the Iberian insulation thesis.
Occurred 13 Apr 2026
Read story →
Renewables pass fossil fuels, gas bill rises
The Ember renewable generation thesis (wind/solar exceeding fossil in 2025) is tested in real time as low-wind conditions push Spanish gas peakers into the merit order.
Occurred 1 Apr 2026
Read story →
This Event
Spain power jumps 148% in two days on low wind
The Iberian renewables-insulation trade is weather-dependent in ways the monthly averages obscure.
Led to
Italy-Spain spread compresses 76% in four sessions
Spain's 148% surge to EUR 71.91 on 15 April was the first leg of the spread compression that continued to EUR 24.54 on 17 April.
Occurred 17 Apr 2026
Read story →
Different Perspectives
French industrial power consumers
French industrial power consumers
France's day-ahead discount to Germany has nearly closed as TTF and EUA rise together on both sides of the border, eroding the arbitrage French industry relied on through the summer. A standing negative spark removes the German demand buffer that kept that spread wide.
TTF trading desks
TTF trading desks
Desks are reading the inversion as an injection-arbitrage trade: buy TTF at EUR 62.4/MWh now, accept the near-term loss on the spread, and sell into the winter strip once caverns are forced back into the market. The 0.8 GWh/day German print makes that trade increasingly asymmetric.
Oxford Institute for Energy Studies
Oxford Institute for Energy Studies
Two straight sessions of negative clean spark spread confirm gas has stopped setting German power prices cleanly; CCGT dispatch now follows the spread's sign, not storage need. Caverns quitting the prompt bid on 21 July is that mechanism working exactly as the structural read predicts.
European Commission
European Commission
State-aid approval for StromVKG has not been granted, a status Bundesnetzagentur's own scheme page confirms, and Brussels was not consulted before the auction opened. Every award from the 8 September deadline stays exposed to a formal proceeding or clawback once the Commission rules.
Bundesnetzagentur
Bundesnetzagentur
Bundesnetzagentur opened the first 4.5 GW StromVKG capacity auction on 21 July, bids due 8 September, without waiting for EU state-aid clearance. Berlin is treating Germany's 24% share of EU storage as urgent enough to move first on capacity and negotiate the state-aid question with Brussels afterwards.
Marine insurers and AIS trackers covering Hormuz
Marine insurers and AIS trackers covering Hormuz
AIS data shows severe curtailment on 20 July, 479 vessels anchored, 36 dark, 123 still broadcasting inside the strait, not the closure the IRGC claims. War-risk premiums move on the unresolved CENTCOM-IRGC contest itself, since underwriters price the dispute as much as the count.