Staying informed about electricity price trends is crucial, as it is an essential energy source for society. In recent years, electricity bills have surged, with historic peaks exceeding 500 euros per MWh. These increases have made the cost of electricity one of the main economic concerns for Spanish households.
The evolution of electricity prices in 2025 was dynamic, with significant fluctuations throughout the year. The average wholesale market price in 2025 stood at 14.87 euros/MWh, slightly higher than the 73 euros recorded in 2024. The Iberian Energy Market Operator (OMIE) is the body responsible for publishing official electricity price data. For May 12, the average price will be 69.23 euros/MWh.
When is electricity cheapest and most expensive?
The cheapest time slot to use high-consumption appliances is from 4 PM to 5 PM, when electricity will cost 0.30 euros/MWh. The most expensive hour, when electricity use should be avoided, is between 9 PM and 10 PM, with prices reaching 123.47 euros/MWh.
Hourly electricity prices for May 12:
– 00:00-01:00: 108.67 euros/MWh
– 01:00-02:00: 105.26 euros/MWh
– 02:00-03:00: 99.56 euros/MWh
– 03:00-04:00: 98.72 euros/MWh
– 04:00-05:00: 99.17 euros/MWh
– 05:00-06:00: 103.01 euros/MWh
– 06:00-07:00: 112.67 euros/MWh
– 07:00-08:00: 122.74 euros/MWh
– 08:00-09:00: 112.15 euros/MWh
– 09:00-10:00: 94.08 euros/MWh
– 10:00-11:00: 43.43 euros/MWh
– 11:00-12:00: 18.80 euros/MWh
– 12:00-13:00: 15.53 euros/MWh
– 13:00-14:00: 2.92 euros/MWh
– 14:00-15:00: 1.01 euros/MWh
– 15:00-16:00: 0.26 euros/MWh
– 16:00-17:00: 0.30 euros/MWh
– 17:00-18:00: 2.61 euros/MWh
– 18:00-19:00: 11.64 euros/MWh
– 19:00-20:00: 49.71 euros/MWh
– 20:00-21:00: 107.11 euros/MWh
– 21:00-22:00: 123.47 euros/MWh
– 22:00-23:00: 121.66 euros/MWh
– 23:00-00:00: 107.16 euros/MWh
Why does the price of electricity vary throughout the day?
The main causes of fluctuations include the cost of fossil fuels such as gas and oil, as well as periods of high demand, such as morning and evening peak hours. During high-use times, energy providers must purchase electricity on the market at higher prices, while during low-demand periods, they can rely on more efficient energy sources.
