Staying informed about electricity price fluctuations is crucial, as power remains an essential resource for modern life. In recent years, electricity bills have soared, with historical records exceeding €500 per MWh, making energy costs one of the biggest financial burdens for Spanish households.
The wholesale market price in 2025 averaged €14.87/MWh, slightly higher than 2024’s average of €73/MWh. For May 11, the Operator of the Iberian Energy Market (OMIE) reports an average price of €52.66/MWh. The most affordable hour to run high-consumption appliances is between 16:00 and 17:00, when electricity costs just €0.14/MWh. Conversely, the priciest slot is from 21:00 to 22:00, peaking at €187.57/MWh.
Here is the complete hourly breakdown for May 11:
- 00:00–01:00: €60.12/MWh
- 01:00–02:00: €56.50/MWh
- 02:00–03:00: €55.48/MWh
- 03:00–04:00: €52.13/MWh
- 04:00–05:00: €41.31/MWh
- 05:00–06:00: €57.68/MWh
- 06:00–07:00: €60.39/MWh
- 07:00–08:00: €83.75/MWh
- 08:00–09:00: €64.82/MWh
- 09:00–10:00: €33.75/MWh
- 10:00–11:00: €17.00/MWh
- 11:00–12:00: €4.15/MWh
- 12:00–13:00: €3.40/MWh
- 13:00–14:00: €1.29/MWh
- 14:00–15:00: €1.26/MWh
- 15:00–16:00: €0.68/MWh
- 16:00–17:00: €0.14/MWh
- 17:00–18:00: €1.20/MWh
- 18:00–19:00: €24.26/MWh
- 19:00–20:00: €77.50/MWh
- 20:00–21:00: €121.79/MWh
- 21:00–22:00: €187.57/MWh
- 22:00–23:00: €139.83/MWh
- 23:00–00:00: €117.87/MWh
Why does the price vary throughout the day? Key drivers include the cost of fossil fuels (like gas and oil) and periods of high demand, such as morning and evening rush hours. During peak usage, energy suppliers must purchase electricity on the market at higher rates, while lower-demand periods allow the use of more efficient energy sources.
