The ability to invert enough Direct Current (DC) to satisfy the Alternating Current (AC) load demand. The more power needed on the consumption side, the Bigger the inverter capacity needs to be. Furthermore, the “source” of the DC also plays a factor. It would not be cool to ask a 12 volt inverter to work on a 48 volt system.
Ian at this site has a huge variety of off-grid and hybrid inverters from MPP Solar of Taiwan. This appears to be the only “official” vendor of this brand of very sought after hybrid inverters from which all others copy. This unit is so flipping popular that it’s always on backorder. If you can get a hold of it, jump on the opportunity.
Per reviewers on the YouTube, this Chinese company appears to make the exact same duplicate of many popular MPP Solar inverters. If things get tight and you need an inverter quickly, their offering looks competitive.
Then there’s the ubiquitous, omniscient Amazon. The variety of Chinese brand inverters offered is unparalleled. But I like to support small businesses whenever practical, hence the low-key promotion of this affiliate partner.