Going solar on an RV, boat, or shed is one of those projects that feels simple until you start drilling holes. I have helped friends think through enough of these builds to know the gear matters: a flimsy bracket can let a panel walk off a roof on the first gust, while a properly sized cable keeps voltage drop from silently stealing your harvest. This roundup walks through ten pieces of equipment I would actually recommend, from the structural brackets that hold panels down to the wiring that ties the array together.
A Side-By-Side Look
Go Power TS-30 30 Amp Automatic Transfer Switch
POWLERCTL 10 AWG 30Ft Solar Extension Cable
Go Power Retreat-E 100W Solar Expansion Kit
Renogy 2 Sets Solar Panel Mounting Z Brackets
Go Power Overlander-E 200W Solar Expansion Kit
Go Power Retreat 100 Watt Solar Kit
BougeRv Z Brackets for Solar Panels (4 Units)
Go Power GP-PSK-130 130W Portable Solar Kit
Go Power DuraLite 100-Watt Foldable Solar Panel
Go Power DuraLite-E 100-Watt Expansion Panel
Why These Options Stand Out
An automatic transfer switch is the quiet hero on a roof-mounted solar system that also draws from shore power or a generator. The Go Power TS-30 watches both inputs and flips the load between them without anyone flipping a breaker, which matters once an RV or cabin starts juggling an inverter, a generator, and the campground pedestal.
The compact 30A footprint fits inside most utility bays, and the built-in generator delay gives a generator time to spin up and stabilize before the load transfers over. For anyone running a Go Power Retreat or Overlander array like the ones covered later in this roundup, the TS-30 slots in as the brain that decides which source feeds the panel.
What Earns Its Place
- Handles dual 30A sources for inverter-plus-shore or inverter-plus-generator setups
- Compact enclosure fits in tight RV utility bays
- Delay function protects equipment during generator warm-up
- Plays well with Go Power solar controllers and panels
Points To Keep In Mind
- Limited to 30A, so high-draw rigs with two AC units may outgrow it
- Wiring requires comfortable familiarity with 120V shore feeds
Who It Suits Best
Full-time RVers and off-grid cabin owners who run an inverter alongside shore or generator power.
Look Elsewhere When
The Go Power Retreat 100 Watt Solar Kit on its own is enough and no transfer switching is needed.
Extension cable is the part nobody thinks about until their controller sits six feet from where the array has to go. POWLERCTL’s 10 AWG tinned-copper run with pre-crimped MC4 connectors fills that gap, and the heavy jacket shrugs off rooftop heat and rain.
Compared to thinner 12 AWG leads, the 6mm² conductor keeps voltage drop modest over a 30-foot run, which protects harvest from panels that sit far from the charge controller. For RV, boat, and shed installs where the array lives up top and the electronics sit below, this cable is the bridge that ties them together.
Reasons It Performs
- 10 AWG conductor keeps voltage drop low over long runs
- Pre-installed MC4 plugs cut install time on the roof
- Tinned copper resists corrosion in coastal and humid setups
- UV-resistant jacket suited to permanent rooftop exposure
Honest Caveats
- 30-foot length is fixed, so very large rigs may need two cables joined or a longer alternative
- Jacket can stiffen in deep cold, which makes winter routing trickier
Quick Facts
Right Fit For
RVers and boat owners needing a weather-rated run between rooftop panels and a remote charge controller.
Reach For A Different Pick When
The BougeRv Z Brackets on item 7 pair better with a project that needs new mounting hardware alongside wiring.
Adding a second panel to a working solar setup is usually the moment people discover their cabling, brackets, and controller were never sized for it. The Go Power Retreat-E 100W Expansion Kit skips that headache by shipping the panel, MC4 connectors, and the brackets needed to bolt onto an existing Go Power array of 80W or more.
For owners of the Retreat 100W covered later in this list, the Retreat-E drops in cleanly and roughly doubles daily harvest without forcing a controller swap. It is the kind of kit I would point first-time upgraders toward, since the parts compatibility has already been worked out.
What Stands Out
- Engineered to pair with existing 80W+ Go Power solar systems
- Includes mounting hardware, so no second trip to the hardware store
- MC4 connectors let a single panel add to the array without re-terminating leads
- Compact 100W module fits alongside an existing roof panel on most RVs
Trade Offs
- Only fits Go Power ecosystems, so mixed-brand arrays will not benefit from the plug-and-play design
- Adds roof load; rooftop weight matters on older trailers with weight limits
Built With In Mind
Existing Go Power RV owners looking to grow harvest without redesigning their array from scratch.
Where A Sibling Pick Shines
First-time installers should start with the Go Power Retreat 100 Watt Solar Kit instead, which includes the controller.
Z brackets are the simplest, cheapest way to mount a single rigid panel flat against a roof, and Renogy’s aluminum version has been a quiet workhorse for years. Two sets ship in the box, which covers the four corners of one typical 100W panel.
The lightweight, corrosion-resistant aluminum keeps rooftop weight down, which matters on older RVs and trailers with strict tongue-weight ratings. I have seen these brackets hold panels through highway speeds and salty air, and the included fasteners mean most installers only need a screwdriver and a sealant gun.
The Upside
- Lightweight aluminum keeps added roof load minimal
- Corrosion-resistant construction suits marine and humid climates
- Two sets cover a standard single-panel install
- Works on RVs, trailers, boats, sheds, and framed wooden structures
Small Caveats
- Only suits flat or near-flat mounting, not adjustable tilt arrays
- Standoff height is low, so airflow under the panel is limited and panel temps can climb in summer
Feature Snapshot
Made For
RV and trailer owners mounting a single rigid panel flat to a roof with minimal fuss.
Not Your Match When
Uneven rooftops call for the taller BougeRv Z Brackets on item 7 for better airflow and clearance.
The Overlander-E is the expansion panel for people who already run a Go Power 200W kit and want more harvest without redesigning their setup. At 200 watts, it doubles what the smaller Retreat-E adds, and it carries the same MC4 plug-and-play integration.
Compared to the 100W options earlier in this list, this panel suits rigs with bigger battery banks or higher daily loads, like a family running a fridge, lights, and a vent fan off-grid. It needs a fair stretch of clear roof space and a controller rated for the extra input, so it is more of a measured upgrade than a casual one.
What Pays Off
- 200W module adds serious daily harvest to existing Go Power 200W systems
- MC4 parallel connectors simplify integration without re-wiring the array
- 12V output matches common RV and marine battery banks
- Designed to pair with Go Power Overlander kits for a matched look on the roof
Some Limits To Know
- Requires a controller rated for the higher amperage
- Larger panel footprint may not fit smaller RV roofs
- Designed as an add-on, not a standalone starter kit
Whose Shelf It Belongs On
Full-time RVers running existing Go Power 200W kits who want more daytime harvest for heavier loads.
A Better Fit Elsewhere
Newcomers should start with the Go Power Retreat 100 Watt Solar Kit before considering this size.
The Retreat 100W is the kit I would hand a friend installing their first rooftop solar panel. It bundles the panel, a 30A PWM controller, the MC4 cables, and the mounting hardware in one box, which removes the half-dozen side trips that usually slow a first project.
For campers and small RVs with limited roof space, 100 watts covers lights, phone charging, and a modest vent fan without overcomplicating the wiring. The included PWM controller is the right fit for a single panel setup, and the kit becomes the foundation that the Retreat-E 100W Expansion Kit can build onto later.
Strengths Worth Knowing
- All-in-one package removes guesswork for first-time installers
- 30A PWM controller suits a single-panel starter array
- Compact panel footprint fits on smaller camper roofs
- Expansion-ready, since Go Power sells matching add-on panels
A Few Limitations
- PWM controller is less efficient than MPPT on cold, cloudy days
- Single panel limits total daily harvest for higher-demand setups
Key Product Details
Perfect Match For
First-time installers adding rooftop solar to a small camper or trailer with modest power needs.
Skip It When
Heavier household loads call for the Go Power Overlander-E 200W Solar Expansion Kit on item 5 instead.
Where the Renogy brackets sit almost flush, BougeRv’s Z brackets lift the panel a bit higher off the roof, which improves airflow and helps on surfaces that are not perfectly flat. Four brackets in the pack cover a single 100W to 400W panel, depending on frame size.
I have talked through installs where the extra standoff made the difference between a panel that cooks itself in summer and one that stays cool enough to keep producing. The slightly taller profile also lets wiring pass underneath cleanly, which tidies up the look on a finished roof.
What Helps Most
- Extra standoff height improves airflow under the panel
- Handles 100W to 400W panels with one bracket set
- Works on RVs, trailers, boats, and uneven rooftops
- Allows cabling to route beneath the panel for a cleaner install
Things To Weigh
- Only four brackets ship per pack, which may not cover very large panels needing extra mid-frame support
- Taller profile adds a bit of wind drag compared to flush mounts
Best Suited To
Installers mounting medium panels on slightly curved or uneven rooftops that need airflow underneath.
Swap It Out When
A flush mount on a flat RV roof works better with the Renogy Z Brackets covered on item 4.
Not everyone wants to drill into a roof, and the GP-PSK-130 sidesteps that entirely with a folding panel that sets up on the ground. Adjustable legs aim the panel at the sun, and the included 10A controller, battery clamps, and nylon case make it a true grab-and-go kit.
This is the panel I picture beside a tent or a popup camper, where storage space matters more than a permanent roof mount. Compared to the fixed kits earlier in this roundup, it sacrifices some total daily harvest for the freedom to chase the sun’s angle through the day.
Positive Points
- Folding design stows in a nylon case for transport
- Adjustable legs optimize the sun angle throughout the day
- Includes a 10A controller and battery clamps for a complete kit
- No roof drilling required, which renters and travelers appreciate
Possible Compromises
- Requires manual setup and repositioning to chase peak sun
- Lower total wattage than rooftop arrays of similar cost
Spec Overview
Who Should Grab It
Campers and overlanders who move sites often and want solar without modifying the vehicle.
Consider Something Else When
A permanent rooftop install on a parked RV calls for the Go Power Retreat 100 Watt Solar Kit instead.
The DuraLite pushes portable solar into genuinely light territory, weighing about 8.5 pounds while still pairing high-efficiency monocrystalline cells with a 30A PWM charge controller. Expansion is built in, with the option to scale toward a 300W array when the time comes.
For backpackers, ATV users, and small camper vans where every pound counts, this is one of the easiest panels to lift and reposition. It folds down small enough to slide behind a seat, and the integrated controller simplifies the wiring to a single battery hookup.
Where It Delivers
- Lightweight 8.5 lb build eases transport for small vehicles
- Monocrystalline cells extract more energy per square inch than older polycrystalline designs
- Expandable toward 300W for future growth
- Integrated 30A PWM controller simplifies the wiring
Practical Considerations
- PWM controller trails MPPT efficiency in cold, cloudy weather
- Foldable format means the panel needs handling care to avoid creasing the cells
Made For
Light-pack travelers running ATVs, camper vans, or tent camping setups where weight matters.
A Better Fit Elsewhere
Heavier RV loads and rooftop installs pair better with the Go Power Retreat 100 Watt Solar Kit on item 6.
The DuraLite-E is the add-on that grew up. It hooks into an existing DuraLite setup and adds a built-in USB charging port through its rugged plastic handles, which turns the panel into both a power source and a charging dock for phones and tablets at camp.
At roughly 10 pounds, it stays in the lightweight league while opening up more daily harvest for tent trailers and camper vans. For owners who started with the DuraLite on item 9, this expansion slot in cleanly without forcing a brand switch.
Standout Benefits
- Built-in USB port turns the panel into a casual charging station
- Connects directly to existing Go Power DuraLite kits for matched expansion
- Lightweight 10 lb build fits travel and tent trailer storage
- Rugged handles make carrying and positioning easier
Factors To Consider
- USB charging is convenient but slower than a dedicated power bank for fast top-ups
- Expansion only pairs with DuraLite-family kits, not all Go Power models
Feature Card
Right Fit For
Tent trailer and camper van owners running a DuraLite base kit who want more harvest and a USB dock.
Look Elsewhere When
An RV roof installation needs a hard-mount kit like the Go Power Retreat 100 Watt Solar Kit on item 6.
What To Weigh Before Choosing Solar Panel Roof Mounting Systems
Match Hardware To Your Roof Surface
Rigid panels sit on Z brackets or tilt mounts, while portable panels skip the drilling altogether. Aluminum brackets resist corrosion and keep roof weight low, which matters on older trailers with weight limits.
Check Conductor Gauge And Connector Type
PV wire is sized in AWG (American Wire Gauge), and a lower number means a thicker conductor that loses less voltage over long runs. MC4 connectors are the industry standard for joining panels and extension cables, so matching connectors saves re-termination work.
Confirm Controller And Battery Compatibility
A PWM charge controller suits small, single-panel arrays and runs cooler in steady sun. MPPT controllers extract more energy from larger arrays in cold or cloudy conditions, but cost more upfront. Match the controller amperage to the panel output before buying.
Plan Expansion Before You Buy
Choosing a kit that ships matching expansion panels lets a starter setup grow into a full rooftop array without re-engineering brackets or wiring. Kits from the same brand, like the Go Power Retreat and Retreat-E covered above, are designed to combine cleanly.
Smart Choices Across These Picks
Mistakes Worth Dodging
Underestimating cable gauge is the classic rookie miss, since thinner wire across a long run silently bleeds harvest. Skimping on sealant around roof brackets is another common error that turns into a leak after the first hard rain. Always confirm the controller is sized for the planned final array, not just the panels installed today.
The Upgrade Payoff
Spending more for a matched expansion path, like the Retreat and Retreat-E family, usually pays off when the first panel is no longer enough. MPPT controllers and thicker 10 AWG cabling also return their premium through measurably better daily harvest, especially in cooler climates where panel voltage climbs.
Frequently Asked Questions
Do solar panel brackets need to be aluminum?
Aluminum resists rust and keeps weight low, which matters on vehicle roofs. Stainless steel works too, but adds more weight per bracket set.
How many Z brackets does one panel need?
Most rigid panels use four brackets, one near each corner. Larger panels may benefit from mid-frame supports for highway-speed driving.
Can I mix brands on one roof?
Yes, but connector types and controller specs must match. Staying within one brand ecosystem, like Go Power, simplifies integration.
What does a PWM controller actually do?
It regulates the voltage and current flowing from the panels to the battery, preventing overcharge and extending battery life.
Should I leave a gap under the panel?
Yes. Standoff brackets with a taller profile improve airflow, which keeps panels cooler and producing more on hot summer days.
Wrap Up
A clean solar install starts with hardware matched to the roof, the wiring sized for the run, and a controller ready for the array you actually plan to build, not just the one you mount today. The ten picks above cover the brackets, panels, cables, and switching gear that get a small off-grid system from box to rooftop without surprises. Pick the foundation that fits your rig first, then layer expansion panels on once you know how your power use actually behaves in the field.
