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Energy upgrading

Energy upgrading


Buildings and means of transport constitute the largest consumers of energy in Greece. In Greece, buildings are responsible for almost 36% of the country’s total consumption of energy, while during the period 2000 – 2005 buildings increased their energy consumption by approximately 24%, one of the largest increases in Europe.

One of the main reasons why buildings in Greece have a particularly low energy performance is because they are old and lack modern installations due to the absence of a relative legislation over the past 30 years.

Most of these buildings face such problems as:

  • Partial or total lack of thermal insulation.
  • Old door / window casings (frames / single-pane windows).
  • Lack of solar protection of their south and west frontages.
  • Limited use of the Greece’s solar energy.
  • Inadequate maintenance of the heating / air-conditioning systems that results in a low performance.

The advantages of upgrading the energy performance of a building are the following:

  • A lower cost of operation, particularly today when the price of fuel is continuously increasing.
  • Contribution to the protection of the environment.
  • Improvement in the internal climate of the building and in the quality of life of its residents.
  • Increase in the value of the property, since a building with a high energy class (higher than B) has a lower operating cost than a building with a low energy class and, therefore, the owner can ask for a higher price at the time of sale or lease.
building energy efficiency upgrade

ARSIS can undertake a building at the stage of its energy upgrading, providing the following services:

  • A study of the energy behaviour of the building envelope with the use of energy performance software programmes.
  • A study of the energy behaviour of the existing heating and cooling systems with the use of energy performance software programmes.
  • Estimation of the energy that a building consumes and the energy a building can save with the application of energy upgrading strategies.
  • The preparation of a financial – technical study on the basis of which the cost of the applications and the time of absorption of the cost are determined.

• The implementation of all the necessary interventions (e.g. thermal insulation of the building envelope, replacement of door / window frames, upgrading of the heating – air-conditioning – hot water systems, shading systems, green roofs) with which the desired result will be achieved on the basis of the building’s energy study.