What are the P1, P2 and P3 time slots?

Electricity regulations divide the day into three periods:

• P1 (Peak): the most expensive. Monday to Friday, 10:00–14:00 and 18:00–22:00.
• P2 (Mid-peak): intermediate cost. All remaining hours on Monday to Friday.
• P3 (Off-peak): the cheapest. Nights (22:00–10:00), weekends and national public holidays.

With the Tarifa Constante, the price is the same across all three periods — so you don't need to think about when you consume.