ProMaster Roof Racks & Ladders
ProMaster roofs are wide and flat, which makes them the best solar platform of the three big vans - you can fit more panel area per foot of van than on a Sprinter or a Transit. These racks are built to take advantage of it.
Choose by length: 136" high roof, 159" high roof or 159" EXT high roof. Then choose Standard (flat deck, lightest, best value) or Premium (side rails and tie-down points).
The ProMaster mounts differently from the other platforms, so pay attention to the interface hardware: ProMaster roof rack brackets and 8020 adapter brackets are what tie the deck to the roof, and ProMaster crossbars are cut to the ProMaster's wider roof. The V2 side-mount ladder keeps the rear doors clear.
Load it up with solar mounts, then see the rest of the platform in RAM ProMaster Parts.