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Old 01-03-2016, 05:12 AM   #1
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Default GP-FLEX-200 System Additional Panels

My 2016 Unity MB came with the GoPower GP-FLEX-200 PV panel system. This is a 200W system. GoPower offers add on panels (GP-FLEX-100E)which are supposed to work with the same 30 amp solar controller which is part of the GP-FLEX-200.

I have seen some videos support 4 and 5 GP-FLEX-100E panels with the same 30 amp controller. Depending on how you read the specifications it would appear that 5 panels might exceed the rating of the controller. Anyone upgraded the FLEX-200?

500 Watts on the roof would be nice.
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Old 01-15-2016, 12:09 AM   #2
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Default Re: GP-FLEX-200 System Additional Panels

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500 Watts on the roof would be nice.
Since no response to this question, I will answer it myself. The GoPower controller will support five panels. Just finished installation today. Pretty much plug, glue and play.

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Old 01-15-2016, 12:32 AM   #3
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Default Re: GP-FLEX-200 System Additional Panels

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Originally Posted by turbopilot View Post
Since no response to this question, I will answer it myself. The GoPower controller will support five panels. Just finished installation today. Pretty much plug, glue and play.

Nice work! Looks to be a neat, well thought installation. Will these panels provide more than the two house batteries can take in? Could you add another couple batteries for additional storage? How complicated is the gluing down of the panels?

Thanks, Bob
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Old 01-15-2016, 12:45 AM   #4
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Default Re: GP-FLEX-200 System Additional Panels

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Nice work! Looks to be a neat, well thought installation. Will these panels provide more than the two house batteries can take in? Could you add another couple batteries for additional storage? How complicated is the gluing down of the panels?

Thanks, Bob
With seasonal variations and clouds you really never get too many amps from a roof based RV PV system. Today when I rolled it out into the sunshine I turned on all the DC sources in the camper including the inverter running the satellite TV system. System draw was 15 amps which just happened to be what the panels were providing around 1PM in sunny California. The sun was 32 degrees above the horizon, so 40 degrees lower than it would be in June.

Panels glued down with SikaFlex-221 per GoPower suggestion.

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Old 01-15-2016, 01:08 AM   #5
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Default Re: GP-FLEX-200 System Additional Panels

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Originally Posted by turbopilot View Post
With seasonal variations and clouds you really never get too many amps from a roof based RV PV system. Today when I rolled it out into the sunshine I turned on all the DC sources in the camper including the inverter running the satellite TV system. System draw was 15 amps which just happened to be what the panels were providing around 1PM in sunny California. The sun was 32 degrees above the horizon, so 40 degrees lower than it would be in June.

Panels glued down with SikaFlex-221 per GoPower suggestion.
What is this "sun" you speak of? The weather droid on this evening's newscast described this next week by pointing out the days where there would be some "non-rainy hours" present.

I thought you folks on the southern portions of the left coast were supposed to get the El Nino fire hose.

I like the solar harvest numbers you are recording at the moment with at least somewhat marginal conditions with the sun angles. For me the main problem with solar is that I am primarily an off season camper who leaves my RV in storage from Memorial Day weekend through Labor Day weekend and prefer cloudy/stormy conditions to clear skies for my outings. The benefits of solar during the seasons I am usually out don't really pencil out well for $$$/benefit. The notion of being able to add enough panels to even start to make up for my typical lack of solar opportunities is encouraging.
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Old 02-13-2016, 04:34 PM   #6
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Default Re: GP-FLEX-200 System Additional Panels

Just completed my first long trip in the 2016 Unity MB up to Friday Harbor, WA in the San Juan Islands. Got a good overhead image of the rig and Flex panels on the ferry trip out to the islands.

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Old 02-13-2016, 05:07 PM   #7
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Default Re: GP-FLEX-200 System Additional Panels

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Originally Posted by turbopilot View Post
Just completed my first long trip in the 2016 Unity MB up to Friday Harbor, WA in the San Juan Islands. Got a good overhead image of the rig and Flex panels on the ferry trip out to the islands.

Nice! We are heading up there in June. Where did you camp on the island?

Drones are pretty handy for checking on the roof too.
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Old 02-13-2016, 05:24 PM   #8
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Default Re: GP-FLEX-200 System Additional Panels

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Just completed my first long trip in the 2016 Unity MB up to Friday Harbor, WA in the San Juan Islands. Got a good overhead image of the rig and Flex panels on the ferry trip out to the islands.


Nice shot of the top of your Unity. Busy place up there! ;-) I think I'm going to add two more flex panels to my rig when it arrives. I trust that you had a nice trip...
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Old 02-13-2016, 06:08 PM   #9
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Default Re: GP-FLEX-200 System Additional Panels

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Nice shot of the top of your Unity. Busy place up there! ;-) I think I'm going to add two more flex panels to my rig when it arrives. I trust that you had a nice trip...
Good trip. Everything worked.

Not sure what constraints you may have with the new rig but if you are going to add 2 panels suggest you add a third for a full system. It is hard to have too many watts available on the roof since so many issues can impact how much solar energy you can capture.

One subtle benefit of having a bunch of watts available on the roof with the Blue Sea ML-ACR is that your batteries (camper and cab) are almost always topped off and conditioned when you need them. Any time you leave the rig not plugged into shore power (either for storage or just parking it while away) the batteries are constantly being topped off automatically awaiting your return.
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Old 02-14-2016, 12:41 AM   #10
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Default Re: GP-FLEX-200 System Additional Panels

Nice to know we can load a Washington state ferry and not rip the macerator off. Did you notice the tide levels? They have improved the transition plates.

Was considering the Alaskan ferry but the have a page of warnings for RV overhangs.
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