SolarDesignTool is geared toward designing grid-tied, single-phase, residential-scale PV systems in the United States.
The vast majority of projects which users create in SolarDesignTool are 5kW–30kW. This range is the “sweet spot” in terms of equipment that we support, and the limits of what the app is capable of. Single-line diagram generation requires that the system has no more than four (4) strings per inverter, for up to two (2) inverters.
We do not recommend using SolarDesignTool for designing systems larger than 75kW.
Your experience is going to depend on what type of system you are designing. For example, if you are designing a…