Monthly electricity market report · MIBEL

Iberian electricity market — August 2025

Day-ahead price, demand and generation mix · ESIOS and OMIE data

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Average price

68.4 €

▼ −2.2% vs July 2025

Average demand

27.7 GW

▼ −5.3% vs July 2025

Renewables

54%

▼ −1 pp YoY · CO₂-free 76%

Negative periods

124

▲ +3000% YoY

Day-ahead market price

The day-ahead market averaged 68.4 €/MWh, −2.2% versus July 2025. In perspective it sits −4.4% against the 11-year August average (71.6 €/MWh): a broadly normal month. The year-on-year figure (−24.8% vs August 2024) is distorted by an anomalous base.

Hourly month heatmap

Hour ↑ · Day of month → -5 €/MWh · 170 €/MWh

-5 €/MWh

170 €/MWh

Daily average price comparison

Day of month · €/MWh

Demand

Peninsular demand averaged 27.7 GW, −5.3% on July 2025 and −1.1% YoY, peaking at 35.2 GW.

Hour · GW

Generation mix

On about 22.8 TWh scheduled (P48), renewables made up 54% and CO₂-free generation 76%.

Generation mix

Solar fotovoltaica

Nuclear

Eólica

Ciclo combinado

Hidráulica

Cogeneración

Solar térmica

Turbinación bombeo

Solar PV

25.7% +8%

Nuclear

22.3% +0%

Wind

16.1% −2%

CCGT

15.2% +22%

Hydro

8.1% −5%

Cogeneration

5.5% −12%

Solar thermal

2.4% −22%

Pumped-storage

2.0% +36%

Other renewables

1.5% +3%

Fuel / gas

0.7%

Other

0.4% +43%

Coal

0.0% −100%

Historical context

106

155

August · €/MWh

Methodology

Price: ESIOS indicator 600 (Spain). Demand: ESIOS indicator 1293 (peninsular). Mix: P48 schedule by technology (REE/ESIOS), best estimate at month close — metered generation is published later; the check against the most recent metered month shows differences below 1%. Peninsular scope, full calendar month.