Πρώτη δημοσίευση: CLIMA 21

Του Υπάτιου Μωυσιάδη..

Καινοτόμες εφαρμογές και προκλήσεις για μεγαλύτερη διείσδυση, φιλικότερες λύσεις και μείωση του κόστους

Πολλοί είναι εκείνοι οι οποίοι προσπαθούν να προβλέψουν ποια θα είναι η κυρίαρχη τεχνολογία παραγωγής ηλεκτρικής ενέργειας έως το 2050. Το μόνο σίγουρο είναι ότι το μείγμα παραγωγής ηλεκτρισμού δεν θα αποτελείται πλέον από μία κυρίαρχη τεχνολογία, αλλά πολλές διαφορετικές, με συγκεκριμένες εφαρμογές που θα καλύπτουν συγκεκριμένες ανάγκες σε συγκεκριμένες συνθήκες (γεωγραφικές, περιβαλλοντικές, προφίλ κατανάλωσης, κτλ.).

Όσον αφορά τις διαθέσιμες τεχνολογίες που μετατρέπουν την ηλιακή ενέργεια σε ηλεκτρισμό, αυτές είναι δύο, τα γνωστά φωτοβολταϊκά συστήματα (Solar PV ή Photovoltaics) και τα συστήματα ηλιοθερμικής ενέργειας, τα λεγόμενα CSP (Concentrated Solar Power). Από τις δύο αυτές τεχνολογίες τα Φ/Β συστήματα έχουν κυριαρχήσει παγκοσμίως, στην συντριπτική πλειοψηφία των περιπτώσεων και με αυτά θα ασχοληθούμε στο παρόν.

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Written by Margarita Kyrkou, surveyor at Wattcrop.

Nowadays, due to the energy crisis experienced by the whole of Europe, there has been increasing reference to energy autonomy. But what does energy autonomy mean?

In the world literature, there are several definitions. Essentially, it is the meeting of the energy needs (electricity, heating & mobility) of a facility through local renewable energy sources, without importing energy and dependence on external factors. Thus, achieving energy independence for these areas.

An example of an area that is energy self-sufficient is the island of Samso in Denmark, the first on the planet. The inhabitants of the island managed to achieve 100% autonomy within 8 years (two years earlier than originally planned). This was achieved through the introduction of modern energy technologies but also through the residents’ efforts to adapt to this change.

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Like all types of projects, renewable energy projects follow a specific process. There are 4 main stages, each of them requiring its own specialised staff. These are the stages of pre-development, development, construction and finally, project management and maintenance.

Stage 1

First and very important, is the pre-development stage. This is that phase of the projects in which, after confirming the availability of the grid in an area, the people appointed by the company to find land, look for suitable fields and large pieces of land for the development of photovoltaic and wind projects. Once the necessary land is found, then the company’s experienced team of engineers undertake the necessary inspections. This involves environmental, topographical and archaeological checks in order to confirm the suitability of the land. The last step in the pre-development stage is the legal control on each private or public piece of land.

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Written by Aggeliki Marinou, environmental specialist at Wattcrop.

The combination of agriculture-livestock farming with photovoltaic parks is widely known abroad and has begun to be incorporated in Greek society, as the need to protect biodiversity, combined with energy efficiency is essential. More specifically, photovoltaic parks can be allocated for grasslands and wildflower meadows, which provide habitats for pollinators, birds and wildlife, as well as for sheep grazing.

The site is suitably landscaped so that animals can live in harmony with photovoltaic panels. The bases of the photovoltaic panels are placed at an appropriate height so as not to obstruct the passage of grazing animals and to ensure that there are passages for the passage of animals through the park.

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