Energy Efficiency In Renewables

“Even if I knew that the world would end tomorrow, just plant my apple tree.” — Martin L. King ~

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What is the Building Energy Efficiency Certification?

The Energy Efficiency Certification of a building is the process by which we measure the conformity of the energy rating obtained with the existing building and leads to issue the actual energy efficiency certificate.

When in the same building there are several heat or cold sources, or both, how the nominal installed power capacity is calculated?

This power will be obtained as the sum of the powers of the heat or cold generators needed to meet demand, without considering the deployed solar thermal power in this installation.

What buildings are required to have a certificate of energy efficiency?

Existing buildings that are subject to sale or lease

What buildings are not required to have an Energy Efficiency Certificate?

a) The buildings which by their nature must remain open for use.

b) buildings and monuments officially protected, where the compliance with such requirements could alter unacceptably their character or appearance.

c) Buildings used as worship and religious activities.

d) temporary buildings with a planned time of use equal to or less than two years.

e) industrial and agricultural buildings in that part to workshops, industrial and non-residential agricultural processes.

f) Isolated buildings with smaller area of 50m².

g) Building technical and little constructive entity with no residential or public, either temporary or permanently, simply develop on one level and do not affect the safety of people.

h) Buildings that are bought for demolition.

i) residential buildings which are the subject of a lease for less than four months.

Who has the obligation to contract the performance of the energy certificate?

The owner of the whole, housing or local building intended for separate use or of distinct legal ownership will be responsible for commissioning and conserve energy efficciency certificate.

When should report on the Energy Efficiency Certificate?

1. The energy efficiency label must be incorporated into any offer, promotion and advertising to the sale or advertising of the building.
2. When the existing building is the subject of the sales contract, full or partial, it will be made available to the acquirer.
3. When the object of the contract is the total or partial lease of the existing building, the simple display sufficient and made available to the tenant a copy of the certificate.

Who can issue the energy certificate?

It will be signed by technicians who are in possession of the academic and professional ownership qualifying for the realization of building projects or their heating systems freely chosen by the owner

Procedure for obtaining the Certificate of Energy Efficiency

 

What content must be In the certificate?

(a) Identification of the building or, in your case, the part that is certified. (address, cityprovince, climatic zone, reference catastyral. Cadastral).

(b) Indication of the recognized procedure for energy rating. It must include the following documentation:
1. Description of the energy characteristics of the building and other data needed toobtain the energy rating of the building (heating, surround heat, and in the tertiarysector, also lighting facilities and conditions of operation and occupation.
2 regulations on savings and efficiency, if any, in the year of construction.
3. Description of tests, checks and inspections carried out by technical certification.
(c) energy efficiency of the building expressed by the energy label rating.

Partial qualifications are included as well as the overall classification of: heating, cooling,water hot health and in the case of the tertiary sector lighting.

(d) a document containing a list with one sufficient number of energy saving measures,recommended by the technical certification.

 

When the rating is A or B in case of voluntarily undertake the recommendations ratings would raise a level; Two levels in the event that the qualification is D, E, F, G.

What is the validity of the certificate?

The energy efficiency certificate shall be valid for ten years. The owner may voluntarily update it, if it considers that there are variations in the building that could change the energy efficiency certificate.

Why the energy rating of the building is expressed in kgCO2/m² and not in units of Energy?

The decree is the Directive 2002/91/EC transposition useing the same measurement system for every Energy Efficiency Certificate

When replacing the existing windows for a double glazing ones, should I update another energy certificate?

The RD states that the owner or his will, if it considers that there are variations in aspects of the building that can modify the certificate. In this case, the energy rating may increase by 1 or 2 categories so that if you upgrade certificate, you possibly revalue your home.

When to Inform In an Energy Efficiency Certificate?

1. The energy efficiency label must be incorporated into any offer, promotion and advertising to the sale or advertising of the building.
2. When the existing building is the subject of the sales contract, full or partial, it will be made available to the acquirer.
3. When the object of the contract is the total or partial lease of the existing building, the simple display sufficient and made available to the tenant a copy of the certificate.

What it is meant by passive energy-saving measures?

Are measures that reduce the energy demand of the building; such as: Increase the facade insulation, replace windows by alternative double glazing ones, installation of solar protection, etc.

Which of the recognized elements CE3X CE3 and is more accurate and better?

The two programs are equivalent and can be used either interchangeably.

Does the energy certificate has to be issued by a certain company?

The energy rating of the building can make any professional who possesses the necessary qualifications for it and is freely chosen by the building’s ownership

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