Solar Sizing Calculator
List the appliances your system must power, then review the estimated daily energy use and the recommended battery bank, PV array and inverter capacity. Results are indicative estimates, not a substitute for a full system design.
Step 1 — Your loads
Enter AC watts for appliances powered through an inverter, and DC watts for appliances connected directly to the battery.
| Appliance | Qty | AC watts | Peak AC watts | DC watts | Hours/day | Wh/day | |
|---|---|---|---|---|---|---|---|
| 0 |
Total AC energy
0 Wh/day
Total DC energy
0 Wh/day
Total daily energy
0 Wh/day
Peak AC demand
0 W
Step 2 — System parameters
Step 3 — Recommended system
Energy drawn from battery
0 Wh/day
Battery bank
0 Ah @ 24 V
0 Wh usable-adjusted capacity
PV array
0 W
Includes ~25% system losses
Charge controller current
0 A
Approximate array current at system voltage
Inverter continuous power
0 W
AC load total plus 25% headroom
Inverter surge capability
0 W
Based on peak AC watts
Estimates assume 90% inverter efficiency and approximately 25% charging and wiring losses. Actual requirements depend on site conditions, battery chemistry and appliance behaviour.