Feeding two panels from one meter is acceptable, as long as the meter is rated for the amount of power that both panels will be using. For customers of MG&E and Alliant, as well as some local utility companies, a property would ideally have one meter when going solar. With one meter, you can save more money when going solar and offset more of your annual electricity use with solar power. Get accurate measurements in meters for solar panel dimensions with this comprehensive chart, ensuring efficient and precise installation for your renewable energy. Whenever you want to find out what the standard solar panel sizes and wattages are, you encounter a big problem: There is no standardized chart that will tell you, for example, “A typical 300-watt solar panel is this long and this wide. A 400W panel has the same physical footprint whether it produces 350W or 450W – the difference lies in cell. The Inverter, the AC Disconnect, the Production Meter, the Service Panel and the Bi-Directional meter all work together on your new system. Below are some commonly asked questions on how they work: 1. Whether it be calculating the amps or rigging it, let's take a look at how.