The sub-panel is another excellent option to upgrade if the home’s sub-panel is outdated and you plan on connecting the solar to the sub-panel vs. the main panel. Every installation is unique, so it is sometimes best to connect the solar in the sub-panel instead of the main one, although this is not always the case.
The inverters are what convert the sun’s direct current (DC) to alternating current (AC), which uses electricity. The sub-panel is where that energy is converted into usable electricity. The sub-panel is a small section of your solar array connected to one or more strings and produces power – the more extensive the array, the more sub-panels you will need to install.
You may need to upgrade your sub panel if it’s outdated, overloaded, or incompatible with modern electrical demands, such as adding solar, battery storage, or EV chargers.
Signs include frequent breaker trips, visible damage, outdated brands (like Zinsco or Federal Pacific), or insufficient capacity for new appliances or systems.
Yes, if your current sub panel cannot handle the additional power load or does not meet code requirements for integrating solar or battery systems.
An upgraded sub panel ensures safety, improves energy efficiency, supports modern electrical demands, and helps your home meet local building codes.
