Monthly electricity market report · MIBEL
Iberian electricity market — September 2023
Day-ahead price, demand and generation mix · ESIOS and OMIE data
Average price
103.3 €
▲ +7.6% vs August 2023
Average demand
25.5 GW
▼ −6.3% vs August 2023
Renewables
44%
▲ +5 pp YoY · CO₂-free 68%
Negative periods
0
YoY
Day-ahead market price
The day-ahead market averaged 103.3 €/MWh, +7.6% versus August 2023. In perspective it sits +41.8% against the 9-year September average (72.9 €/MWh): a somewhat expensive month. The year-on-year figure (−26.7% vs September 2022) is distorted by an anomalous base.
Hourly month heatmap
Daily average price comparison
Demand
Peninsular demand averaged 25.5 GW, −6.3% on August 2023 and −3.8% YoY, peaking at 32.3 GW.
Generation mix
On about 19.6 TWh scheduled (P48), renewables made up 44% and CO₂-free generation 68%.
Generation mix
Historical context
September · €/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.
© datons · Iberian electricity market — September 2023 · ESIOS (Red Eléctrica) · OMIE