🔧 X Solar — Advanced Solar System Sizing Calculator

Estimate the right inverter, battery bank and panel array for your home or business. Enter appliances, choose system options, and get validated sizing recommendations.

1) Appliances & Loads

Add common appliances or custom devices. Enter quantity and average hours per day (for fridges, use average running watts / duty cycle).

Appliance Wattage (W) Qty Hours/day

2) System Options & Preferences

Tip: Use 4–5 for Johannesburg, 4–5 for Durban, 3.5–5 for Cape Town. Ask us for local values.

3) Calculate & Results

Total continuous load:
— W
Estimated daily energy:
— Wh / — kWh
Recommended inverter (cont.):
— W
Suggested inverter size (commercial):
—
Suggested battery capacity:
— Ah @ 48V (~— kWh usable)
Estimated panel array:
— W (≈ — × 450W panels)
Recommended battery type:
—

How this estimate works

  1. Add appliances (W × qty × hours/day) → summed to Wh/day.
  2. Battery Ah uses: Ah = (Wh/day × days autonomy) ÷ (system voltage × DoD).
  3. Panels W uses: panelW = Wh/day ÷ (PSH × efficiency).
  4. Inverter continuous = peak running watts × safety margin (surge factor applied separately).

This tool provides estimates meant for planning. For certified designs, contact our technical team.

⚠️ Disclaimer

© X Solar — This calculator provides general estimates only. Actual power usage and system performance depend on user behaviour, appliance efficiency, installation conditions, battery aging, and environmental factors. X Solar does not guarantee the accuracy of these results and is not liable for any loss, damage, or costs resulting from using this tool. For a precise system design, certified calculations, and an installation quote, please contact X Solar’s technical team.

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