λάμπα, ήλιος, ηλιακή ενέργεια, φως, πυρηνική φάση, κίτρινος, ζήτηση ηλεκτρικής ενέργειας, παραγωγή ηλεκτρικής ενέργειας, ηλιακά κύτταρα, ΑΚΤΙΝΕΣ του ΗΛΙΟΥ, ηλεκτρική ενέργεια
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