Use this Solar System Calculator to estimate your power requirements, then choose specific Victron Solar Products and other options to build a parts cost estimate.
Note: Currently this tool is not very mobile friendly, we hope to change this soon. We always appreciate feedback. If you have feature requests please contact us.
Power Usage Estimates
Choose from preconfigured appliances and devices or add your own custom items. Each line item can be adjusted for power usage and hours used. To calculate your own power requrements for an appliance multiply amps x volts. Email us if you'd like an appliance added.
Watts (Volts x Amps)
Hours used per Day
Total usage per day
How many days of no sun or cloudy days before you need to plugin or run a generator. This multiplies your total power requirments by the number of days of reserve power.
How many hours of usable sunlight will the panels receive? MN Summer is about 5. Find yours using a solar calculator (new window link).
How much of the total sun energy available will ultimately get stored. We recommend 80%
Larger Solar Panels mean less holes in roof, but harder to find the open space without racking. Smaller panels mean less visible from the ground and more able to Tetris solar across the roof of your RV.
Solar Panels Total
To recharge battery bank fully from Solar in 5 Hours
Solar Chargers Total
Larger mppt solar chargers can support more panels, however larger strings of panels are more susceptible to partial shade conditions. For RVs we recommend more smaller chargers. This calculator currently does not account for the right ammount of panels per charger, contact us for consultation.
Batteries & DC Power System
Higher the voltage, more efficencies you gain with wiring and solar chargers. Step down converters are relatively inexpensive and can be a great way to still run 12v appliances with a 24 or 48v battery bank. Note: when adjusting DC voltage the solar chargers will adjust and batteries will be forced into multiples of 1,2 or 4 depending on voltage.
Larger batteries mean less wire and some space savings.
Inverting power controls how much AC power you can use at any single time.
Larger inverters will allow you to run more AC appliances at the same time.
RV Solar Calculator Totals
We support, service and install solar products and rely on larger distributors to handle fulfillment. The best way to support us is to buy from our links below. If you need any service or support on your purchase, please contact us.
MPPT Solar Chargers
1 Inverter / Charger
This tool is for rough estimation only. For a complete personal consultation and solar system overview contact us.
Estimated Component Cost
All Figures are rounded up for better performance. Example: if only 2.1 solar panels would be required, we'll recommend 3.
This is meant to serve as an estimation tool only. It does not account for installation, wire, fuses, breakers, diconnects, etc.
Total Power Required
1x Inverter $money