This is one of the 4,158 solar panels which will be installed at Poughkeepsie Day School.
The panel is wired to an electrical outlet and an on/off switch. The lamp is plugged into the outlet. There is also a multimeter wired to the panel, so you can see the number of volts the panel generates at any given time. If the switch is up and there is enough light hitting the panel, the bulb will light up.
On a cloudy day, inside the lobby, about 10 volts are generated. On a sunny day over 70 volts is being generated.