Investing between 10,000 and 30,000 euros to improve the energy efficiency of the home allows you to save 35% on bills

European legislation requires reducing the energy consumption of the residential housing stock by 16% until 2030, a percentage that rises to around 20% and 22% by 2035. The regulations indicate that 55% of the reduction in Energy consumption must come from the renovation of 43% of the least efficient buildings.

In Spain, these requirements could affect the vast majority of residential properties. According to a previous study prepared by the Rental Observatory, 83.8% of rented homes have an energy rating considered inefficient.

Thus, if these objectives are to be achieved, improving the energy efficiency of our residential housing stock becomes a real necessity, which will entail significant investments to improve aspects of our homes, such as the thermal insulation of facades, heating and cooling systems. and the quality of indoor air in homes.

Specific cases

The Rental Observatory has prepared an analysis to calculate what investment is required for a housing block to move from an inefficient energy rating, that is, from a brown label such as E, F or G; to an efficient one, like A, B or C.

Starting from a housing block made up of 60 units spread over 4 floors and 3 blocks, with standard homes, with an average surface area of ​​80 m2, the Rental Observatory has analyzed three possible energy saving objectives, as well as the actions necessary to achieve them. and the economic investment that would be needed for it.

The consumption of primary and non-renewable energy and carbon dioxide emissions in a building with this typology would have an energy rating of E, the majority among leased properties in Spain (62.3% of the total).

If the community of owners proposed to make reforms to reduce the joint demand for heating and cooling of the building by 35%, as well as reduce primary energy consumption between 30 and 45%, the estimated investment that would be required is about 9,900 € per home.

Rehabilitating Spanish rental homes to improve their rating is necessary to achieve the objectives established by European regulations. This will not only lead to a reduction in energy consumption and demand in our properties, but will also result in the comfort and habitability of our homes. Furthermore, from an economic point of view, it will reduce energy bills and allow investments to be monetized by selling the savings generated through the Energy Savings Certificates and revalue the property for sale.