Module 04 · Sizing

How many panels, and which inverter?

Turn your daily use into a panel count. Then check an inverter against your loads and its limits.

Advanced mode shows temperatures, DC/AC ratio and manual inverter ratings.

1. Energy you need

Use daily kWh if you know it; otherwise monthly units from your bill.

kWh/day
kWh/month

2. Sun and site

Peak sun hours come from your city's planning default; change them if you have site data.

h/day
%
Derating for heat, dust, wiring and inverter losses.
m²
°C
°C

3. Panels and inverter

Inverter type
m²
W
Used when no inverter is selected above.

4. Loads on the inverter

What runs at the same time, and the starting peak of motors such as pumps or fridges. The battery calculator works these out from your appliances.

W
W