close-up man's hands holding phone with solar panel on the glass. charging gadgets with portable solar panel

39aph39 advice alternative businessman carrying charge charging close-up colleague concept connection development eco ecology economy efficiency electric electricity electronic energy engineering entrepreneur environmental expertise futuristic gadgets generation generator glass hands handsome holding horizontal independence innovation internet male man mobile modern occupation one outside panel person phone photovoltaic portable power renewable resource s showing solar source sunlight supply sustainable technology travel vacations working