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Spain’s Regulated Power Bill Rises 27% as Wholesale Price Plunges With Nine Negative Hours

CNMC says a gas rebound linked to the Iran conflict is lifting bills despite low wholesale prices.

Overview

  • The CNMC simulator puts a representative PVPC bill at €30.87 so far in March, up 27% from February for a household with 4 kW contracted power and 3,240 kWh annual use.
  • OMIE reports the March 15 day‑ahead price at €6.45/MWh with nine hourly slots below €0/MWh, dipping to about −€2.10/MWh at mid‑day.
  • Coverage attributes the retail rise to higher gas costs for power generation, with reports citing a gas rebound of around 70% since the Iran conflict began.
  • Very low or negative pool prices do not fully flow to customers because fixed system peajes, cargos and adjustments remain on bills, affecting roughly 8 million PVPC users.
  • The PVPC redesign in place since 2024 adds a risk premium and shifts pricing toward forward products so that from 2026 the daily pool sets 55% of the tariff using a 10% monthly, 36% quarterly and 54% annual mix.