Off-grid solar calculator
Solar Planner
4.0kWh/day3panels$7,955est.
Your 3-panel system covers a typical day with 9% headroom
generic sun estimate, set your locationyou use 4.0 kWh/daypanels make 4.3 kWh on a worst-month day
Your appliances
Qty
1
Qty
6
Qty
1
Qty
1
Qty
1
Qty
2
Total
3.96 kWh/day1,115 W peak
Where the power goes
Efficient Refrigerator1200 Wh
Starlink Terminal1200 Wh
Well Pump750 Wh
Laptop390 Wh
LED Light Bulb300 Wh
peak demand 1,115W
Set your build location above to pull real NREL solar data and tighten the estimate. Until then we size for a conservative 4.5 peak sun hours.
Solar panels
3
3 × 400W = 1,200W
Battery bank
430 Ah
6 batteries at 24V · 2 days autonomy
Inverter
1,400W
Pure sine wave, 24V input
Charge controller
63A
MPPT
Estimated equipment cost
ItemQtyUnit $Total
Rich Solar 400W Mono(400W, 40.5V Vmp)
3$250$750Battle Born 100Ah 12V LiFePO4(100Ah, 12.8V, 5000 cycles)
6$925$5,550Aims 2000W Pure Sine(2000W Pure Sine Wave)
1$400$400Victron SmartSolar 250/100(MPPT, 250V/100A)
1$850$850Ground Mount Kit (per panel)(Steel frame + posts)
3$75$22510 AWG Solar Cable (50ft)(50ft, UV-rated, MC4)
4$45$180Estimated total$7,955
Ballpark retail pricing for representative gear, not a quote. Actual cost varies with brand, sales, and installation.
