Small Cabin Solar Calculator example loaded. Edit every appliance to match your equipment. These are illustrative inputs, not a tested system. Read assumptions
Off-Grid Solar Calculator
Follow 4 simple steps to design your system.
Step 1: What do you want to power?
Search the load library, or add a missing appliance. Presets are editable starting estimates: check watts, operating hours and quantity for your equipment.
For cycling loads such as refrigerators, nameplate watts are not daily energy use. Use measured consumption when available and check the operating hours; starting power must be checked separately.
| Appliance | Watts | Hrs | Qty | Wh/day | |
|---|---|---|---|---|---|
| No appliances added yet. Select from the list above. | |||||
📸 Don't know the wattage? Snap a photo of the appliance nameplate — we'll help!
Step 2: Where are you located?
Enter your city for solar resource data. An estimated fallback is used if NREL data is unavailable.
💡 Can't find your city? Try a nearby major city.
🌍 No location selected. We'll use the US average of 4.5 peak sun hours.
Step 3: Configure your system
Choose your preferences. Don't worry — we've set sensible defaults.
🔄 System: 48V · LiFePO4 · 3 days autonomy · Mono panels
Calculating your off-grid system...