Choose the inverter

In Inverter, pick a microinverter, a string inverter or a hybrid like Powerwall 3, or search the whole CEC list. The generic inverter is fine for a first estimate, but the proposal needs the exact model.

The inverter turns the panels’ DC power into the AC power the home uses. Its efficiency and its limit — how much it can put out at the sunniest moment — change the yearly production a little, and the proposal lists it by name.

Pick the inverter

Open Inverter

In the calculator, open Inverter. Until you choose one, the calculation uses Generic inverter (96%) — typical efficiency and clipping.
Choose from the list or search

Pick a model, or type in Search all CEC inverters — for example “IQ8HC” or “SolarEdge”. Models that fit the panel are marked Works with — see Equipment compatibility check.
Set the number of string or hybrid inverters

With a string or hybrid inverter, type how many units the panels feed in Inverters taking solar input. For Powerwall 3 the number comes from Battery. Microinverters need nothing — there’s one under every panel.

The three kinds

Kind	How it works
Microinverter	One small inverter under each panel, like Enphase IQ8. A shaded panel doesn’t hold back the others.
String inverter	One box on the wall takes the DC from rows of panels.
Hybrid	A string inverter and a battery in one unit, like Tesla Powerwall 3.

Hybrid inverters and Powerwall 3: Tesla Powerwall 3 and other hybrid inverters.

What you see	What to do
Choose the inverter (not the generic one) — the proposal lists exact equipment.	You pressed Save PDF with the generic inverter. Choose the real model, press Calculate, then make the PDF.

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Updated October 6, 2026