How energy efficient buildings save money and energy

Photo illustration: Pixabay (LauraRinke)

Portugal is a real example of how to go through the energy transition in a good way, but also how to make old buildings energy efficient. They made excellent use of 610 million euros from the European Union and started renovating old buildings and are now saving energy, but also reducing harmful gas emissions.

Energy renovation of the buildings began in 2006, and almost a third of them have been renovated. They seem to be particularly proud of Lisbon’s City Hall, which has been completely reconstructed. Thanks to the renovation that cost 863,000 euros, electricity consumption in this building was reduced by 50 percent, and CO2 emission savings reached 85 tons per year.

In this building, 4,000 light bulbs were replaced, solar panels were installed on the roof, and the biggest challenge was replacing the windows, which had to be wooden in order to preserve the architectural and historical value of the building.

The energy certificate is a document that confirms that the building saves energy and is issued by the Energy Agency, and apartments that possess it are the most sought after in Portugal. According to the words Nelson Laža, chairman of the board of directors of the energy agency ADENE, new buildings have this certificate, and their job is to help renovate old ones.

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Cooperative for renewable energy

Copernicus (coopernico) is the first cooperative for renewable energy in Portugal which brings together 3,000 subcontractors who, by association, ensure a safe supply of electricity.

Photo-illustration: Pixabay (postcardtrip)

“It is a new way of producing electricity in communities organized by citizens, different institutions and they cover their buildings with solar panels. In a range of two kilometers, they can combine production and provide energy for their needs, and they can also sell it to people who live nearby and have problems with supply for social reasons,” said Rui Valente, director of Kopernik.

He is told journalists from Serbia who were visiting Portugal as part of the Pulse of Europe project of EU media visits that they currently have 1,600 customers who have a guaranteed price. As he added, they are currently focused on solar energy, but they plan to use wind energy as well, what is certain is that they will use and sell energy only from renewable sources.

Good examples coming to us from Portugal can help us accelerate our energy transition, but show us how to become more energy efficient.

Nevena Đukić

Source: Energetski Portal by

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