On March 5, the World Energy Efficiency Day was celebrated, a key date to reflect on the use we make of energy and act accordingly.

Energy efficiency is considered as one of the brake policies for climate change and the achievement of sustainable societies, together with the development of renewable energies and a less aggressive transport policy with the environment. All this in the hand of the promotion and development of renewable energies and transport policies that reduce their impact on the environment.

More than 84% of buildings in Spain are energy inefficient

According to a study carried out by EuroACE, the alliance of companies for energy efficiency in buildings, Spain is still far from being efficient. Currently, 84% of Spanish buildings are energy inefficient, that is, they consume a greater amount of energy and do not take advantage of the advantages offered by renewable energy.

At European level, between 70% and 90% of buildings are inefficient. The study also points out that in 90 years 90% of these buildings will continue to exist. If measures are not taken and its rating is not improved, the International Energy Agency estimates that global energy demand will increase by 50% before 2050.

In Spain, buildings are currently responsible for 31% of energy consumption. A reality that directly affects the pocket of the Spaniards, since energy efficiency is closely linked to a saving in consumption: the classification A - the highest - involves spending up to 10 times less than the G - the lowest -. Currently, in Spain most buildings have an E, F or G rating.

66% of the energy consumption of buildings is used for heating, cooling and ventilation. A figure that could be reduced with the installation of efficient and sustainable insulation. The improvement of the insulation of inefficient buildings and the construction of new responsible buildings would suppose to have a set of buildings energetically efficient and also producers of clean and renewable energy. As indicated by the Intergovernmental Panel on Climate Change, the implementation of good practices and technologies to achieve more efficient cities could mean the stabilization of energy consumption in buildings, or even its decline in thirty years.