ProMaster Van Solar (2026): The Best Kits and Panels for a ProMaster Roof

ProMaster van solar is one of the easier roof jobs in van building. The Ram ProMaster’s boxy body gives you a wide, mostly flat roof, and the high-roof versions have eight factory roof mounting points that rack makers bolt to, so you can carry panels without drilling the roof skin at all. The harder question is how much solar to put up there, and whether to buy a complete kit or build your own array.

Quick honesty: I don’t own a ProMaster and I’ve never bolted a panel to one. I compared these kits on what’s actually in the box and the class of controller, then read a lot of ProMaster owners describing their roof layouts. Solar gets my attention because it’s the one source that keeps coming back every day with no fuel and no hookup, which matters to anyone who’s lived without power they could count on.

ProMaster van solar picks at a glance

Kit contents change between revisions. Read the current listing’s included-items list before buying.

How much ProMaster van solar do you actually need?

Work backwards from the battery and the fridge. A 12 V compressor fridge averages something like 40 W across a day, which is close to 1 kWh. Add lights, a fan, a laptop and phones and a typical build lands between 1 and 2 kWh a day. A panel rarely delivers its rated wattage; a fair planning figure is rated watts × 4 to 5 sun hours × about 0.75 for heat, angle and wiring losses. On that estimate:

These are estimates. Winter, clouds and parking in shade can cut them in half or worse, which is why many ProMaster owners pair roof solar with a DC-DC charger off the alternator. Our DC to DC charger guide covers sizing, and the Victron Orion-Tr Smart 30A review looks at the most common pick. To size your own numbers, use the LiFePO4 battery sizing calculator.

Fitting panels to a ProMaster roof

The roof fan is usually what decides the layout. Most builds put a roof fan near the back or middle, and the panels go around it. Owners on the ProMaster forum describe layouts such as three 175 W panels plus a MaxxAir fan on a 159-inch high roof, so 400 to 500 W with a fan is realistic on the longer wheelbases. On the 136-inch wheelbase, plan on less.

There are two mounting routes:

A roof rack on the factory points. Rack makers including Flatline Van Co., Orion Van Gear and Fiamma sell ProMaster racks that attach to the factory roof points with no drilling. You get airflow under the panels, which keeps them cooler and producing more, plus somewhere to stand and carry gear. The cost is money and a few inches of height. That matters if you park in garages or drive-throughs.

Direct mount to the roof. Z-brackets bonded with VHB tape, often with a sealant and sometimes a bolt per bracket, is a common owner approach and it’s what most kits’ brackets are designed for. It’s lower and cheaper. The trade is roof penetrations if you bolt, and less cooling air behind the panel.

Either way, plan the cable entry. A single roof entry gland near the battery location keeps the run short, and short matters at 12 V. Our guide to wiring solar panels on a roof covers series versus parallel, and MC4 connectors explained covers the connectors every kit uses.

Best overall ProMaster van solar kit: Renogy 400W Premium

Four 100 W monocrystalline panels, a 40 A MPPT controller, a Bluetooth module, mounting brackets and tray cables. The 40 A controller is sized properly for 400 W at 12 V, so nothing is being starved, and MPPT is what you want on a van that often parks at a bad angle or in cold, bright weather. Four smaller panels also fit around a roof fan more easily than two big ones. The limit is the ceiling. A 40 A controller charging a 12 V battery at about 14.4 V tops out near 576 W of output, so a 600 W array later means a second controller or a bigger one.

Best starter kit with room to grow: Renogy 200W Premium

Two 100 W panels with the same 40 A Rover MPPT controller, plus cable, fuse and Z-brackets. That oversized controller is the reason to choose it over cheaper 200 W kits: you can add two more matching panels later without replacing anything. It’s the sensible buy if your first trips are weekends and you don’t yet know how much power you use.

The RICH SOLAR 200W Starter Kit is the alternative if you’re sure 200 W is the final size. Its 20 A MPPT controller is correctly matched to 200 W but leaves no headroom.

Best for a stealth ProMaster: Renogy 200W flexible

About a tenth of an inch thick, ETFE-coated, and able to bend up to 240 degrees. Glued flat to the roof, flexible panels are close to invisible from the street, and they add almost no height or weight. The trade-off is real: with no air gap behind them they run hotter, which costs output in summer, and flexible panels generally don’t last as long as framed glass. Choose them for the look and the height, not to save money over the long run. Our Renogy 200W flexible review goes deeper.

Building your own array on a rack

If you’re fitting a rack anyway, individual 100 W rigid panels give you the most control over the layout. At roughly 41.8 × 20.9 in each, they tile neatly around a fan and roof vents, and you can buy a controller sized for the final array from day one. See our Renogy 100W rigid review and the best MPPT charge controllers roundup to match a controller.

Where ProMaster van solar fits in the whole build

Solar is one of three charging sources, next to the alternator and shore power, and it only earns its place with a battery big enough to store what it makes. Our van life electrical guide covers the whole system, roof mount vs tilt vs suitcase compares mounting styles, and best solar panels for van life ranks panels regardless of van. For panel ratings and how they relate to real output, NREL publishes the underlying solar resource data by location.

Frequently asked questions

For a low-profile approach, read stealth van electrical too.

Last updated: September 26, 2026. This ProMaster van solar guide uses manufacturer kit listings and owner-reported layouts; output figures are estimates. We do not display live prices.