During the first week of July 2025, the megawatt-hour prices The Spanish electricity market continues to show marked volatility, both in the average daily rate and in the maximum and minimum hourly values. A detailed analysis of these figures is essential for those who want to optimize consumption and reduce the impact of their electricity bills on their homes or businesses.
The dynamics of hourly and daily variations remains a key factor for the consumer, who must remain attentive to the ups and downs of the wholesale market. Knowing in advance the hours when energy is most accessible can translate into a significant savings, especially in times when the use of high-consumption appliances—such as air conditioning—becomes essential due to high summer temperatures.
Megawatt-hour prices from July 2 to 8, 2025
During this period, the average rate ranged between 45,15 euros and 100,36 euros per megawatt hour. July 2nd was notable for an average rate of €100,36/MWh, with peaks of up to €130,14/MWh and lows of around €70,64/MWh, while July 8th saw a significant drop to an average of €45,15/MWh, even reaching hourly lows of € 1,72 / MWh, an unusual value.
The data also show that the hourly maximums exceed 100 euros/MWh on several days, reaching, for example, €142,59/MWh on July 3 (between 21:00 p.m. and 22:00 p.m.), and €139,26/MWh during the same hour on July 4. In contrast, the cheapest band It is usually found in the mid-morning or early afternoon, marking differences of up to ten times between the minimum and maximum of the same day.
Hourly prices and ideal times for consumption
The hourly behavior of the megawatt hour is one of the most relevant aspects. For example, on July 4, electricity reached its lowest price between 11:00 and 12:00 (€72/MWh), while the most expensive period was between 21:00 and 22:00 (€139,26/MWh). This trend was repeated throughout the week, indicating that, in general, during the early afternoon and midday It is the best time to use devices that require more energy.
Nighttime and early morning periods tend to be the least favorable in terms of energy prices, often reaching rates above €110/MWh. It is therefore essential to avoid using appliances such as the washing machine, oven, or air conditioning during these periods if you want to minimize costs.
Comparison with previous years and tariff components
Compared to 2024 data, the wholesale market shows a significant reduction in the average annual rate, falling by more than 28% compared to the previous year. However, volatility remains the main characteristic, influenced by factors such as demand, the contribution of renewable energy, weather conditions, and fluctuations in regulated and fiscal costs.
It's worth remembering that the price set in the wholesale market is not exactly what the consumer ends up paying, as tolls, charges, system adjustments, and other variable costs that affect the regulated tariff (PVPC) must be added to this figure. Furthermore, since 2024, the calculation method has evolved to mitigate extreme fluctuations, increasingly incorporating futures market references: in 2025, they already account for 40% and are expected to reach 2026% in 55.
Impact on your bill and tips for saving
El increase in VAT to 21% Since January 2025, this has meant an additional increase in bills for most consumers, both in the regulated and free markets. This, coupled with the volatility of hourly prices, underscores the importance of planning electricity use. Experts recommend concentrating the use of appliances such as washing machines and dishwashers during the cheapest time slots and avoiding waste resulting from unnecessary standby mode or leaving lights and appliances on.
To reduce costs, it is also advisable to set the air conditioning temperature around 26°CEach degree of temperature increase reduces energy consumption by approximately 7%. Additionally, switching to LED bulbs and taking advantage of natural light can help reduce energy consumption.
The evolution of megawatt-hour prices these days reflects the importance of closely monitoring daily information and adapting consumption habits. Taking advantage of the lowest-priced periods can translate into asignificant difference` on the monthly bill, depending on the attention paid to these details.