The utility company replaces your standard meter with a bi-directional meter. This measures energy delivered (DE) and energy returned (RE). These two numbers determine the netmetering balance at the end of your billing period.
All inverters have a display that indicates operation of the system. It will show system power (watts), grid conditions, energy produced, and voltage.
There are optional remote monitoring systems that will send a wired or wireless signal to a remote location that will allow you to monitor system performance.
There are both AC and DC disconnects required to safely shut down and restart the system.
All panels and racking systems are electrically bonded together and connected to a single earth ground point. The WEEB (Washer, Electrical Equipment Bonding) system insures that all components have adequate electrical bonding.
Panel Angle and Direction for a Fixed Array
The ideal direction is true south with a tilt angle between 30 and 35 degrees. This will provide the highest energy production for the year.
Modern solar panels produce significant energy off-axis. Tilt angles 20 degrees from ideal (50 or 15 deg), will produce 95% of maximum. Panels pointed 30 deg east or west of true south will produce 90-95% of maximum.