Energy Efficiency Buildings energy consumption almost null (nZEB)

Buildings with almost zero energy consumption (nZEB). One goal with many claims.

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

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

D 2010/31/UE Art. 9) Energy consuming buildings almost nil

1. Member States shall ensure that what:

a) no later than December 31, 2020, all new buildings are energy consumption buildings almost nil, and that

b) after December 31, 2018, new buildings that are occupied and owned by public authorities are buildings with almost zero energy consumption.

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

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

a) the buildings or units thereof that are build, sell, or lease to a new tenant, and

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

The transposition made by the PRD for which it is approved the Basic Efficiency Certification Procedure Energetics is next. (Referring to the certification, no to nZEBs)

Transitional provision second.

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

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

2. The buildings or units of buildings to which referred to in Article 13, paragraph 1, of the Procedure basic, they will have the obligation to display their efficiency label power no later than January 9, 2013.

3. The buildings or units of buildings to which referred to in Article 13(2) of the Basic Procedure, with a total useful area of more than 500 m2 will have obligation to display your energy efficiency label to no later than January 9, 2013 and July 9, 2015 when its surface is greater than 250 m2.

“The difference between its application in the buildings that present public services if they are public or private lies in the fact that if they are public, the realization of the certificate and displaying the label is always mandatory if the public service occupies more than 250m2. Instead, in the case that the building is private, it is mandatory in case the building has a useful surface area greater than 500m2 and is of certification application (new construction buildings, great rehabilitation, purchase-sale or rent). »

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As we all know, the new Housing Plan 2013-2016 and the royal decrees to regulate the procedure basic for the certification of housing and modifications of building thermal installations soon it will come to light. It is currently in the Cortes for its final approval, although we do not know with accuracy of the new guidelines as we have not had access to the draft Law. The new key points in the future amendments to the RITE and RD of Certification.

We are apparently moving towards a more sustainable future, as they commented in the press conference after the Council of Ministers «An investment is announced of 2,500 million euros in the new programs of housing, of which 1,500 million will go to facilitate access to housing and another 627 million to rehabilitation and efficiency energy»…. Will we be able to comply with the expectations of the European Community?

Evidently premature the date of 9 seemed of January 2013. Perhaps it should have corresponded to the nZEB renewal rate, set for 1 January 2014.

In principle, in a light way, we could summarize everything in the target for 2020, (2018 for administrations central) that all buildings are “ nZEB ” (nearly Zero Energy Buildings) Energy consumption buildings almost nil . Despite the enormous ambiguity of the term, It is hoped that the regulations will avoid confusion in the national, regional and municipal administrations and above all, contradictions:

The renovation of the EPBD (Energy Performance Building Directive) 2002/91/CE in a more demanding process and ambitious.
The quantification must be done in Kwh/m²/year of Primary Energy , a concept much easier and more logical, than the CO2 emissions established in news for efficiency certification energy of buildings that causes situations contradictory and unjustified. The important thing will not be certify, but establish and apply the improvement measures.
The obligation to provide information to users and consumers through readings and actual consumption of Energy, through smart meters or not, on time royal.
The obligation of administrations to be an example in the application of the Directives.

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Article written by Luis Ruiz de la Fuente Perera (Energy Management Architect) for Home Repair Care

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Energy Efficiency Energy consumption buildings almost null(nZEB)

Buildings with almost zero energy consumption (nZEB). One goal with many claims.