Tomorrow's electricity price: €1/kWh peak during evening hours
On June 22, between 20:00 and 22:00, the hourly kWh price on the PVPC tariff (regulated retail market) will exceed one euro once taxes are included. A household using air conditioning during these two hours could pay more than €2 just for consumption. Alerts have been sent via email by platforms like Selectra, warning of an exceptional spike in the regulated tariff.
Why does the PVPC use hourly prices instead of fixed bands?
A common misconception is that the last-resort tariff only has three fixed-price bands (peak, flat, valley). This is incorrect: the PVPC reflects the hourly cost of the wholesale market. Each hour has its own price, updated daily. Bands exist for power capacity charges and tolls, but consumption is billed at the exact hourly price. Therefore, although the kWh might be €0.10 at 14:00 tomorrow, it spikes to €0.88 before taxes at 20:00. With the electricity tax (5.11%) and VAT (21%), the total exceeds one euro.
What causes this absurd peak?
Given the sunny day and full reservoirs, low prices would be expected. However, accumulated demand at sunset, when solar generation drops, forces gas plants to cover the gap, raising prices. An additional factor contributes: according to industry sources, an error by an electricity agent triggered adjustment services, which Red Eléctrica (the Spanish grid operator) must correct. This is not unprecedented; a similar, even more anomalous episode occurred months ago.
Is a fixed or regulated tariff better?
Faced with such fluctuations, many consumers consider switching to a flat-rate tariff. Proponents argue it avoids checking prices hourly and results in similar monthly costs. However, OCU studies indicate that the PVPC is usually cheaper, especially if eligible for the social bonus, which discounts 25% to 50%. Utilities promote fixed tariffs because they know the average consumer does not optimize usage, securing their margin. Flexibility is key: those who can shift consumption to cheap hours (midday sun or early morning) benefit from the regulated option. For those seeking simplicity, fixed rates offer peace of mind, though annual adjustments may bring surprises.
The renewable energy paradox
It is ironic that despite massive solar deployment and clear skies, prices surge exactly when people return home and turn on lights. Photovoltaic generation concentrates in central hours, but without sufficient storage at sunset, the system relies on costlier technologies. Meanwhile, France often faces cooling issues in nuclear plants during heatwaves, further reducing supply in the Mediterranean region. Consequently, watching football or having dinner becomes an energy luxury: many plan to spend evenings in bars or malls instead.
Originally published in Economía Digital.