There is nothing wrong withe these packaged systems. But they can be costly, but they are all-in-one integrated which is best fir many people.
Dont skimp on the panels. You’ll need a decent number of them.
I prefer to “roll my own”
300AH LiFepo4 battery, 150v 50A MPPT charger, and 8 100watt panels, 2400w sinewave inverter w/4800w peak.
This lets me operate 2 series strings of 4 panels.
With this I can operate a garage fridge + stand alone freezer indefinitely.
I could operate a 5000btu AC unit at peak sun without discharging the battery.
I can operate any power tool Ive got intermittently plus lights.
Its probably between $2k and $2.5k for this.
Also, as needed you can charge the battery w genset - but you only need a small honda.
If you want to get fancy, you can wire up a transformer to create 240V split phase, so i can use this to power my house overnight (without large loads) and not have to run a genset all night.
Everything you need to know about smaller solar power systems.
DIY Solar Power with Will Prowse. (youtube)
His website with smallish to medium size off-grid systems (good!)
https://www.mobile-solarpower.com/
It’s what I used to build a copy of this...
https://www.mobile-solarpower.com/the-classic-400-watt-rvs-vans-buses.html
I use these batteries...
https://www.currentconnected.com/product/sok-sk12v206-lifepo4-battery/?ref=wp
His Youtube has GOBBS of tests, evaluations, projects etc.
https://www.youtube.com/@WillProwse/videos
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