Spanish department stores, cinemas, hotels, stations and airports are implementing measures to save energy during both the summer and winter seasons. During winter, heating cannot exceed 19°C while the minimum limit for air conditioners during summer is 27°C.
The move comes as part of Spain's plans to reduce its energy consumption and meet the lower supply of Russian gas to Europe.
Further to this, lighting in shop windows, unused offices and monuments must be turned off after 22:00. Meanwhile, public buildings, such as museums and stores that have air conditioning or heating, will be mandated to close their doors to prevent waste.
Working from home is also being encouraged in the private sector as well as for civil servants to save energy.
Last week, Prime Minister Pedro Sanchez paved the way by calling on the population to follow his lead and not wear a tie.
"If you're not already doing it, I'd like you to not wear a tie if you don't have to," he told the companies. "This way we can also contribute to the energy savings that are so necessary in our country."
Energy saving rules until November 2023
The new rules to save energy will come into force from next week and will remain in place until 1 November 2021.
At the end of May, Spain already initiated plans to limit the energy consumption of public buildings after the European Union called on Member States to reduce their dependance on Russian gas.
Spain's Minister for the Green Transition Teresa Ribera announced that additional procedures will be taken after the summer holidays.