Calculator
Off-Grid Solar Calculator
For consumers, students & professionals. Result, assumptions, chart, comparisons and recommendations.
Unit system— all inputs and outputs convert automatically
Inputs
Enter your data — results update live.
Required battery capacity
12.1
kWh
Breakdown chart
Visual comparison of each component (Ah @ 48V).
- Amp-hours
- 252.00 Ah @ 48V
- Typical cost @ $500/kWh
- 6039.00 $
- Cycles to 80% (LiFePO₄)
- 4000.00 cycles
Methodology & sources
Formula
Capacity kWh = load × days / (DoD × efficiency); Ah = kWh × 1000 / VSources
- • NREL Battery Sizing Guide
- • IEEE 1013