Spain’s average day-ahead wholesale electricity price is set to fall to 94.39 €/MWh on Sunday, August 9, down 13.09% from the previous day, information from the Operador del Mercado Ibérico de Energía (OMIE), which operates the Iberian wholesale market. Wholesale prices measure the cost of energy traded in the market; they differ from the final price paid by a household.
Red Eléctrica de España publishes the hourly regulated PVPC tariff through its ESIOS platform, a separate measure. For Sunday, quoted PVPC prices reach a low of 0.0117 €/kWh between 13:00 and 15:00 and a high of 0.2175 €/kWh from 21:00 to 22:00, with a daily average of 0.1232 €/kWh. ESIOS identifies PVPC 2.0TD hourly data with indicator 1001. The tariff includes wholesale-market exposure and regulated components, so its hourly figures are not a direct conversion of the OMIE average.
The units differ too: 1 €/MWh equals 0.001 €/kWh, making 94.39 €/MWh equivalent to 0.09439 €/kWh for the wholesale energy price alone. That conversion does not yield a household’s final tariff. Network tolls and regulated charges, along with taxes, affect the amount paid, and a change in the wholesale price does not necessarily produce an equal percentage change in a consumer’s bill.
The hourly pattern is sharply uneven. Prices are expected to stay above 0.15 €/kWh from midnight until 08:00, fall after 09:00 and hit their lowest levels around midday, before rising again after 18:00 toward the evening peak. Consumers on tariffs linked to hourly prices may be able to cut energy costs by shifting flexible, energy-intensive activities to cheaper periods. The benefit depends on their contract and consumption profile.
Day-ahead electricity prices across Europe are reported by country or bidding zone, and figures can vary by market interval and by whether they show an hourly price or a daily average. Sweden, in particular, is divided into multiple bidding zones, so a single figure may not describe the whole country. Cross-border trading links European markets, but prices in one market do not determine Spain’s price on their own; demand and generation availability matter, as do interconnection flows that shape market clearing.
High solar generation can contribute to lower prices during daylight hours by increasing available supply, but it is only one factor in hourly market movements. Wind and hydro output, together with demand and thermal plant availability, can also affect prices; so can electricity flows between markets. Weekend demand patterns may influence the market, but weekends do not guarantee lower rates every day.
For households, the effect of hourly changes depends on the tariff in their contract. PVPC customers are exposed to hourly price movements and regulated charges, while customers with a fixed-rate free-market contract generally have greater price predictability but may not benefit from the lowest spot-market hours. The final bill also reflects consumption and contracted power, with applicable taxes adding to the total.
Consumers can check Red Eléctrica de España’s ESIOS updates for the next day’s hourly PVPC values and plan flexible electricity use. Reviewing contracted power against actual needs may also help avoid unnecessary fixed costs. A single day’s average should not stand in for the entire month: monthly averages can differ substantially from daily figures, as can peak and flat periods; valley periods have their own rates. Household savings vary with individual usage and contract terms.
