Energy Efficiency Nearly zero energy consumption buildings (nZEB)

Near zero energy buildings (nZEB). An objective with many pretensions.

It seems that little by little the panorama of European Directives and standards on Energy Efficiency is clarifying. It is important to make a small mention, not in vain, the rules that we must obey here are largely the transposition of these.

“D 2010/31 / EU Art. 2)« building with almost zero energy consumption »: building with a very high level of energy efficiency, to be determined in accordance with annex I. The almost zero or very low amount of energy The requirement should be covered, to a very large extent, by energy from renewable sources, including energy from renewable sources produced on-site or in the environment; '

D 2010/31 / EU Art. 9)Nearly zero energy consumption buildings

1. Member States shall ensure that:

a) no later than December 31, 2022, all new buildings are buildings with almost zero energy consumption, and that

b) After December 31, 2022, new buildings that are occupied and owned by public authorities are buildings with almost zero energy consumption.

D 2010/31 / EU Art. 12)Issuance of energy efficiency certificates

1. Member States shall ensure that an energy performance certificate is issued for:

a) buildings or units thereof that are built, sold or rented to a new tenant, and

b) buildings in which a public authority occupies a total useful area of more than 500 m2 and which are regularly frequented by the public. On July 9, 2015, this threshold of 500 m2 will be reduced to 250 m2.

The transposition made by the PRD by which the Basic Procedure for Certification of Energy Efficiency is approved is as follows. (Refers to certification, not nZEBs)

Second transitory provision.

Obtaining the certificate and obligation to display the energy efficiency label in buildings that provide public services:

1. The buildings or units of existing buildings occupied by a public authority referred to in article 2.1.d) of the Basic Procedure by which this royal decree is approved will have a maximum term to obtain an energy efficiency certificate until 9 January 2013 when its total useful surface is greater than 500m2 and until July 9, 2015 when its surface is greater than 250m2, and until December 31, 2015, when its surface is greater than 250 m2 and is under lease. .

2. The buildings or building units referred to in article 13, paragraph 1, of the Basic Procedure, will have the obligation to display their energy efficiency label no later than January 9, 2013.

3. The buildings or building units referred to in article 13, paragraph 2, of the Basic Procedure, with a total useful area greater than 500 m2, will be obliged to display their energy efficiency label no later than January 9, 2013 and on July 9, 2015 when its surface is greater than 250 m2.

“The difference between its application in buildings that present public services if they are public or private is that if they are public, the completion of the certificate and showing the label is always mandatory if the public service occupies more than 250m2. On the other hand, in the case that the building is private, it is mandatory in the event that the building has a useful area of more than 500m2 and the certification is applicable (new-construction buildings, major renovation, purchase-sale or rental).»

+ Info:

1. Europarl

As we all already know, the new 2013-2016 Housing Plan and the royal decrees to regulate the basic procedure for the certification of housing and modifications of thermal installations of buildings will soon come to light. It is currently in the Courts for its final approval, although we do not know exactly the new guidelines since we have not had access to the draft of the Law. The new key points in the future modifications of the RITE and RD of Certification … Apparently we are moving towards a more sustainable future, as they commented in the press conference after the Council of Ministers: «An investment of 2,500 million euros is announced in the new housing programs, of which 1,500 million will go to facilitate access to housing. living place and another 627 million to the rehabilitation and energy efficiency »….Will we be able to meet the expectations of the European Community?.The date of January 9, 2013 seemed obviously premature. Perhaps it should have corresponded to the nZEB renewal rate, established for January 1, 2014..In principle, in a slight way, we could summarize everything in the objective for 2022, (2022 for central administrations) that all buildings are"NZEB"(nearly Zero Energy Buildings) Nearly zero energy consumption buildings. Despite the enormous ambiguity of the term, it is to be expected that the regulations will avoid confusion in national, regional and municipal administrations and, above all, contradictions:

1. The renewal of the EPBD (Energy Performance Building Directive) 2002/91 / CE in a more demanding and ambitious process.
2. The quantification should be done in Kwh / m² / year ofPrimary energy, a much easier and more logical concept than the CO2 emissions currently established for the energy efficiency certification of buildings, which causes contradictory and unjustified situations. The important thing will not be to certify, butestablish and apply improvement measures.
3. The obligation of information to users and consumers through readings and real energy consumption, through smart meters or not, in real time.
4. The Obligation of the administrations to be an example in the application of the Directives.

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Article prepared by Luis Ruiz de la Fuente Perera (Energy Manager Architect) for OVACEN

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