Balcony power - Everything you need to know

More watts sounds attractive, but it's not automatically the better choice. This article differentiates between grid feed-in, backup, and PV input, and shows when 800 W, 2,400 W, or 2,500 W make sense.

In short: The SunEnergyXT 500 is aimed at customers looking for the simplest possible 800 W setup. The SunEnergyXT 500 PRO is designed for significantly more power, up to 2,400 W, and should be planned differently before purchase. A later upgrade is not a normal app switch.