Is the GP-FLEX-200 worth it over a rigid panel?

If your roof is curved or membrane and you want a low-profile, light install, the flexible panel is worth the premium. On a flat roof where weight and height don't matter, a rigid panel usually costs less per watt.

What else do I need to install it?

You need roof-safe adhesive or sealant and screws if you go that route; neither is included. You also need wiring to your battery bank and a compatible 12-volt battery.

Does the included controller work with lithium batteries?

The GP-SB-PWM-30BT is a 30-amp PWM controller for 12-volt systems. Check its charge profile settings before connecting a lithium bank, since PWM controllers vary in lithium support.

How much power will it actually make?

The panel is rated 220 watts at 21.0V open circuit and 11.24 amps. Expect less in real conditions, especially when the panel is bonded flat and runs hot.

Can I walk on the panel?

No. Flexible panels are thin and not built for foot traffic, so plan mounting and roof access around that.

Go Power GP-FLEX-200 Solar Kit

Last price we saw

$473.91at Walmart, last seen Nov 1

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Our take on the Go Power GP-FLEX-200 Solar Kit

The Go Power GP-FLEX-200 is a 220-watt flexible solar kit built for RV and van roofs, pairing a thin flexible panel with a 30-amp PWM charge controller. The panel is about 3 mm thick and roughly 82% lighter than a rigid module, so it can be bonded to curved or membrane roofs with adhesive or screws. The kit includes grommets but no sealant or adhesive, so budget for those. It suits 12-volt battery banks, and the controller handles up to 30 amps of continuous solar current.