All homes in Spain must have an efficiency certificate within at least 10 years.

But experts doubt that such rapid adaptation of existing buildings is possible. carnation rose, specialist in the technical inspection of buildings and energy efficiency certificatesallows a building or residence to reach a specific date. energy class D It requires a build quality and finish that most homes in Spain suffer from. Most of the housing stock in Spain dates back to before 1980, when building regulations did not require insulation or safety measures. energy optimization. Another challenge to achieving environmental goals in buildings, Claverol explains, is “in Spain it is very difficult to involve the owner communities to face the expenditure required in reforms to improve energy rating”. From day to day, validators analyze everything, for example, from the insulation of walls or windows to heating systems. Granting a D rating requires technical permeability analyzes (amount of energy passing through walls, heat losses), which most homes fail.

According to Claverol, having a boiler before ’94, for example, means a significant reduction in the energy category of the home. He explains that 60’s or 70’s homes lacked insulation in their walls, and their heating systems assumed emissions that condemned most properties to F or G ratings.

How to develop energy rating?

For Claverol, one way to improve the energy rating of homes is to install high-efficiency heat pump devices that, due to their low emissions, can ameliorate other types of shortcomings to some extent. Glassed enclosures with 12 millimeter air chambers are also valuable. When the electricity or natural gas bill is cheaper and the comfort of home is achieved, the investments are paid back after a while.

“All buildings are Energy efficiency certificate A in 2050 or the same thing, it should be zero emissions”, confirms Dolores HuertaCEO Spanish Green Building Council (GBCe)is a non-profit association that supports the transformation of the construction industry towards a sustainable construction industry model. It offers tools for the assessment and certification of buildings.

Brussels is demanding the so-called Minimum Energy Efficiency Standards (MEPS) includes intermediate targets until 100% of buildings reach zero emissions by 2050. But more than 80% of buildings and houses in Spain receive an energy rating of E, F or G, due to its great constructive inefficiency. In regions of Spain with the highest percentage of very inefficient buildings, this ratio is above 82%; Basque Country (86.52%); Canary Islands (85.48%); Balearic Islands (84.89%); Murcia (83.84%); Valencia (83.08%) and Cantabria (82.25%) according to GBC data. Before 1980, the regulations had not come into force. building technology standards (NTE), technical building code It didn’t come into effect until 2006, obliging builders to adhere to minimum efficiency standards. MEPS For non-residential buildings, they recommend that the worst 15% of the stock built in January 2030 and the next 10% be rehabilitated in January 2034. That equates to the worst 25% of the park.

So called Building Renovation Passport It will become mandatory from the end of 2025. It will determine the way in which each building should plan energy rehabilitation until it complies with regulations. This passport should also include the building’s global warming indicator, which will be mandatory for all buildings from January 2027 and until 2030 for large buildings. It would be something like a business card of every building in terms of carbon emissions over its lifetime.