What is the Spanish energy performance certificate (EPC)?

The Spanish energy performance certificate or ‘energy performance certificate in Spain’ is a report that certifies the energy efficiency of both housing units and business premises. It is a label that allows the classification of properties according to their energy consumption on a scale that ranges from A (granted to the most efficient properties) to G (granted to the least efficient properties).

Is it mandatory to have it?

The energy certificate in Spain became a compulsory document in order to sell or rent a property on July 1st 2013. The owner shall always provide said document to the interested parties.

What steps should I take to obtain it?

In order to obtain a Spanish energy performance certificate a technician who is authorized to issue EPCs will visit the property to perform an inspection of the building materials, the exterior walls, the ventilation systems, etc. Later, said technician will enter all these data in a software programme that will calculate the energy rating of the property in order for the certificate to be issued. Finally, the Spanish energy performance certificate shall be registered at a competent body in each autonomous community. Said body will carry out the appropriate verifications.

What is the objective of our studio in terms of energy efficiency?

Our passion towards high energyefficiency architecture makes our illusion for a project boost each time we can work in it in search of an almost no-energy consumption. Both designing and building passive houses is our main ambition.

How are highly energy-efficient houses designed?

  • A preliminary study on the conditions of the location of the house using real meteorological data is always performed

  • The thermal envelope of the building is optimized throughout the project phase:

– Relevant thermal insulation in roofs, façades, and floors

– High performance doors and windows

– Elimination of thermal bridges

– Mechanical ventilation systems featuring heat recovery

– Tightness of the thermal envelope, thus avoiding all infiltrations and undesired air streams.

– The layout is optimized so all rooms get the maximum amount of natural light while reducing the need of natural lighting.

  • An exhaustive monitoring during the construction works is also relevant in order to verify that those points studied during the project phase are being properly executed.