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Acasă Energie Un sfert din electricitatea planetei ar putea fi generata in desert

Un sfert din electricitatea planetei ar putea fi generata in desert

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Centralele solare amplasate in deserturi ar putea genera, pana in 2050, chiar si un sfert din electricitatea necesara intregului glob, se arata intr-un raport realizat de cateva companii din domeniu, informeaza Reuters.

Studiul realizat de Greenpeace, ESTELA (European Solar Thermal Electricity Association) si grupul SolarPACES arata ca tehnologia poate fi adaptata regiunilor cu temperaturi foarte ridicate, unde cerul nu este acoperit de nori. Pe langa avantajele oferite de energia regenerabila, proiectul ar crea si noi locuri de munca.

Raportul arata ca investitia in centrale solare termice cu concentrarea radiatiei solare directe (CSP) va depasi 2 miliarde de euro in acest an, la nivel global. Pana in 2030, astfel de investitii ar putea sigura 7% din necesarul de energie al planetei, si chiar 15% pana in 2050.

Sumele implicate de aceste proiecte ar putea depasi 21 de miliarde de euro pana in 2015 si 174 de miliarde pana in 2050, cand capacitatea centralelor ar ajunge la 1500 de gigawati. Estimarile sunt mult mai optimiste decat cele ale Agentiei Internationale pentru Energie (IEA), care arata ca procentul de energie solara de pe piata, pana in 2050, ar ajunge la 0,2%.

Centralele CSP folosesc sute de panouri ce concentreaza razele soarelui pana la temperaturi de 400-1000 de grade Celsius. Ele difera de centralele fotovoltaice, care transforma razele direct in electricitate si pot genera energie chiar si in zilele innorate.

Raportul arata ca energia produsa in centralele din desert ar costa initial intre 0,15 si 0,23 euro pe kilowat ora, adica mai mult decat varianta conventionala, dar pretul ar scadea la 0,10 – 0,14 euro pana in 2020.

In 2008, instalatille CSP au produs doar 430 de megawati din necesarul planetei.

Foto: Reuters