Basic question - grid tie inverter with battery only

[ctdctd]

Hi,

I have a 24V 2.5kWh battery system which is used to power some stuff I use in the evenings and is charged during the day with my on grid solar.
It has spare capacity so I was thinking I could get a small 600W grid tie inverter to contribute to my home AC load - typically under a kW per day.

One of these - YH 600W Grid Tie Inverter

The basic question is:-
Would it power my house load only? What's stopping it powering the rest of the grid (!) when there is low or no house load?

 

[pollenface]

It will run at peak capacity. Excess power that is not used by your appliances will go out into the grid. Not a good idea if you don't have a bidirectional meter that hasn't been configured for solar feed in. The feds will be onto you.

Imo, unless you're willing to go for a much more expensive power limiting inverter, your better off just keeping a few basic things off grid on a separate circuit.

 

[ctdctd]

It will run at peak capacity. Excess power that is not used by your appliances will go out into the grid. Not a good idea if you don't have a bidirectional meter that hasn't been configured for solar feed in. The feds will be onto you.

Imo, unless you're willing to go for a much more expensive power limiting inverter, your better off just keeping a few basic things off grid on a separate circuit.

Probably not a good idea then - at least we don't have the Feds on this side of the pond!

 

[SveinHa]

Would it power my house load only?

An off-grid solar inverter looks like a far better choice, quite a bit more expensive but you can let solar/battery feed all of your stuff and when solar/battery runs low, the grid will supply whatever extra power needed.

 

[kmbarreiros]

You would be better off with something like this:
https://m.aliexpress.us/item3/2251832647284439.html?gatewayAdapt=glo2usa4itemAdapt&_randl_shipto=U

This is basically the same device but has a limiter to not allow power to be pushed back into the grid.