The Comisión Nacional de los Mercados y la Competencia (CNMC), Spain's competition authority, has issued a reminder to electricity suppliers regarding fixed-price supply contracts. The authority emphasized that these suppliers are prohibited from modifying the prices once a contract has been established.

This reminder aims to protect consumers from potential price hikes that could occur if suppliers were allowed to change contract terms unilaterally. The CNMC's role is to ensure fair competition in the market, which includes monitoring compliance with existing regulations.

By enforcing these rules, the CNMC seeks to maintain a competitive environment that benefits consumers and prevents unfair practices in the energy sector. The authority encourages consumers to report any irregularities they observe in the market.