Can I simulate multiple planes simultaneously?

Each design in PV Designer has a single rectangular plane. PV Designer can support up to four (4) designs, each with a different plane definition, and each with its own inverter. These can be summed using the Combine mode in the results area. Note, however, that each string is currently limited to a single design and therefore a single plane, and each inverter input is also limited to a single design/plane. So the Combine mode may be useful but it will have limitations.