Last June 2013, Spanish Royal Decree 235/2013 came into effect, according to which buildings and both new construction and already existing dwellings need to comply with the energy performance certificate in order to be sold or rented.

What is such certificate about and useful for?

The topic is still controversial, as the fact that many voices are of the view that such certificate is absolutely useless. However, this statement is far from being true, since this document can be highly efficient when restoring a building or architectural construction, or inspecting its real state before investing in it. Let us think for a moment that a building of which the energy label is rated, let us say, F or G will over-increase energy consumption, which implies that costs in the long term will be much higher than those referred to another building with an energy label rated between A and B categories. Energy certificate plays a meaningful role at this stage, since it is thanks to this document that potential purchasers will be able to have knowledge beforehand of the costs derived from the building or architectural construction in question.

Energy certificate is no more than an informative document, providing the building purchasers or renters with the essential and pertinent information on CO2 emissions and electric power consumption per year, which also offers rules and guides in order to improve efficiency in the building itself, and is primarily aimed to make both buildings and dwellings be as efficient as possible.

This decree basically deals either with all new construction buildings, or with those willing to be sold or rented, for which matter it is compulsory to have this certificate into effect.

Energy certificates might be authorised by professionals such as architects, technical architects, building engineers and general engineers and have a validity date of 10 years from the moment they are issued.

Effects of overusing energy

Buildings affected by temperature losses derived from incorrect insulation and with high carbon dioxide emission rates generate higher electric power consumption, though the greatest inconvenience is that they expel great amounts of carbon dioxide into the atmosphere, worsening the global warming challenge and therefore, that of climate change.

On account of the issues generated as a result of buildings and dwellings incorrect insulation, Spain’s as well as Europe’s main goal is to reduce such elevated energy consumption and gas pollutant emissions as well. Energy performance certificate was created for that very reason, to get to know the real state of the building, being in such way able to solve the existing problems concerning CO2 emissions and the lack of air tightness. Furthermore, it is hoped from the different administrations that for the year 2020, buildings newly built reach almost zero energy consumption, thus contributing to environmental conservation.