[marcyb5st]

You want what is called a AC coupled system. Basically, you put something like a charger/inverter/mppt just upstream of your breaker box so that downstream of your breaker box you don't need to change anything. You can find solutions that are a all-in-one like this one [1]. This particular product outputs up to 5kw on a single phase to your breaker box. So if you need more power you either wire 3 of them in a 3-phase system, or in parallel on the same single phase.

Finally, from the settings you can stop the unit(s) from sending power back on the grid so that you don't have to deal with that hurdle of changing the meter, permits, ... .

I linked an example wiring here [2]. I don't work for Victron, but I am just an happy customer :)

[1] https://www.victronenergy.com/inverter-charger-mppt/multi-rs... [2] https://www.victronenergy.com/media/pg/Multi_RS_Solar/en/app...

[SoftTalker]

I’d be surprised if any electrical utility would be ok with connecting something like this without a certified transfer switch in place.

[marcyb5st]

They are certified. In the sense that if the grid goes down it won't send electricity into it regardless of the settings you have. If you set it up to avoid feeding back energy it is completely transparent from an utility operator perspective. This is at least what the electrician that signed off my installation said and it works for the EU grid. Not sure about US or other parts of the world.

[rsync]

Remember: the best and easiest transfer switch is a physical interlock which costs $50 and doesn't wear out or fail, etc.:

https://www.geninterlock.com/product/generator-interlock-kit...

No certification required. Code compliant. Idiot-proof.

[jacquesm]

Seconded. You do need inverters that are able to work in island mode, which they definitely are not not all capable of doing.