Το πορτραίτο ενός υπερήφανου μηχανικού χαμογελά ικανοποιημένο με την επιτυχημένη δουλειά του. Έννοια: ανανεώσιμες πηγές ενέργειας, την τεχνολογία, την ηλεκτρική ενέργεια, την υπηρεσία, την πράσινη ενέργεια. - Φωτογραφίες & Εικόνες Αρχείου

Worker installing solar panels outdoors.

Engineer at solar power station with solar panel. Practical lessons on renewable energy power plants

Engineer at solar power station with solar panel. Practical lessons on renewable energy power plants

Confident man and power solar station.

Engineer at solar power station with solar panel. Practical lessons on renewable energy power plants

Worker installing solar panels outdoors.

Technician checks the maintenance of the solar panels.

Technician checks the maintenance of the solar panels.

Male worker with solar batteries. Man in a protective helmet. Installing stand-alone solar panel system.

Male worker in uniform outdoors with solar batteries at sunny day

Portrait of smiling confident engineer technician with electrical screwdriver, standing in front of unfinished high exterior solar panel photo voltaic system.

Professional worker installing solar panels on the metal construction, using different equipment, wearing helmet. Innovative solution for energy solving. Use renewable resources. Green energy

Expert is inspecting quality of a solar batterys. Worker in uniform and helmet with equipment. Ecology power conservation concept

Male worker in uniform outdoors with solar batteries at sunny day

A handyman standing on the rooftop with solar panels and smiling at the camera