RV Solar Cost Calculator: Estimate Your System Price
By Smart RV Hub Editorial Team · 6 min read · Methodology: standard solar sizing formulas with prices you set
Estimate your RV solar system size and rough cost from your daily power use and sun hours.
You set the panel and battery prices, so the estimate reflects real numbers rather than a guess.
RV Solar Cost Calculator
Set your power use and current prices, then read your estimate below.
Solar array
390 watts
Battery storage
3,750 Wh
Panels (your price)
$585
Battery (your price)
$2,250
Estimated solar hardware cost
$2,835
Panels and battery, before controller, wiring, and install
A rough estimate only. Real cost depends on brands, the charge controller, wiring, and whether you install it yourself.
📋 What you'll discover
- A live estimate of system size and cost
- What drives RV solar pricing
- How to size panels and battery
- When solar is worth the spend
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How the Estimate Works
Five steps behind the calculator.
Add up daily power use
Estimate the watt hours your lights, fridge, and devices use in a typical day.
Set your sun hours
Use the peak sun hours for where you travel, often around four to six.
Choose backup days
Decide how many cloudy days the battery should cover without sun.
Enter current prices
Set a price per watt for panels and per watt hour for batteries from a retailer.
Read the estimate
The calculator returns a panel size, battery size, and a rough hardware cost.
For an exact build, run your loads through the RV solar sizing guide, then weigh the payback in is RV solar worth it.
Plan Your System
Related RV solar guides.
Frequently Asked Questions
How much does an RV solar system cost?
A small RV solar setup can be modest, while a large system that runs heavy loads off grid costs much more, driven mostly by the battery bank.
The biggest factors are how much power you use each day and how many days of backup you want.
What drives the cost of RV solar?
Panels, a charge controller, wiring, and the battery bank make up the cost, and the battery is usually the largest piece.
Lithium batteries cost more upfront than lead acid but last far longer, which changes the long term math. Compare lithium battery options.
How do you estimate RV solar cost?
Start with your daily energy use in watt hours, divide by your peak sun hours to size the panels, and size the battery for your backup days.
Multiply each by a current price per watt and per watt hour to get a rough total.
Is RV solar worth the cost?
For frequent boondockers, solar pays back over time by replacing campground fees and generator fuel with quiet, free power.
For travelers who mostly use hookups, a smaller system or none at all may make more sense. See the full payback analysis.