Panels
Solar modules turn sunlight into direct current (DC) electricity. They sit on a mounting structure that sets their tilt, keeps them clear of shade from parapets and water tanks, and holds them through wind and rain.
Inverter
Your home runs on alternating current (AC). The inverter converts the panels' DC output into AC that matches the grid, and it watches the grid constantly. If the grid disappears, an on-grid inverter stops within moments.
Net meter
A bi-directional meter records the units you import from the grid and the units you export to it. Your bill is worked out on the difference.
Battery (hybrid and backup systems)
A battery stores energy for later. With a hybrid inverter, the house can disconnect from the grid during an outage and keep running safely from the battery.