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Design Your Perfect
RV Solar System
Stop guessing. Our 11-step guided planner calculates exactly what solar panels, batteries, and inverter you need — based on your actual power usage and camping location.
Everything You Need to Plan Your Build
Professional-grade calculations simplified for DIY RV builders.
Power Load Calculator
Add your appliances and instantly see your daily energy needs. Includes 50+ preset RV appliances.
Solar Array Sizing
We calculate exactly how many watts of solar you need based on your usage and camping style.
Battery Bank Sizing
LiFePO4 battery recommendations sized for your days of autonomy and system voltage.
Location-Based Estimates
NREL PVWatts data gives you real solar production forecasts for your camping region.
Monthly Production Charts
See exactly how much energy your system will produce each month of the year.
Downloadable PDF Report
Get a professional report with your complete system specs, parts list, and pricing.
How It Works
Six simple steps to your complete solar system design
Tell Us About Your RV
RV type, camping style, and budget
Enter Your Location
For accurate solar production data
Map Your Roof Space
Calculate available panel capacity
Add Your Appliances
Build your power load profile
Get Your System Design
Battery, solar, inverter specs
Download Your Report
Complete parts list with pricing
Trusted by RV Solar Builders
"Finally a tool that actually explains why you need each component. Built a 400W system for my travel trailer and it works perfectly."
Sarah M.
Travel Trailer
"The PVWatts integration is a game changer. I can see exactly how much solar I'll produce in each month at my favorite camping spots."
Dave K.
Motorhome
"Used this to plan a 800W system for full-time van life. The battery sizing calculator saved me from under-building."
Alex R.
Sprinter Van