Solar+Battery - more PV AC coupled vs less PV hybrid?

[Simon R]

5 minutes ago, SteamyTea said:

Do you know the sampling rate? From the charts it looks reasonably fine.

It's five minutes give or take. The level of detail from the GE cloud server and Octopus billing is far more detailed than I had anticipated.

[SteamyTea]

38 minutes ago, Simon R said:

It's five minutes give or take

So almost enough to show a kettle boiling.

Unless it is a really large, full kettle.

[S2D2]

8 minutes ago, SteamyTea said:

So almost enough to show a kettle boiling.

Unless it is a really large, full kettle.

 

49 minutes ago, Simon R said:

It's five minutes give or take. The level of detail from the GE cloud server and Octopus billing is far more detailed than I had anticipated.

 

Solax (and I believe GivEnergy too) provide a local API on some inverters so you can get whatever fidelity the inverter sees. I'm logging 10s data from mine without issue, plenty scope to see kettles on etc. 

[SteamyTea]

35 minutes ago, S2D2 said:

I'm logging 10s data from

Yes, that is a good period.

Mine is 1Wh or 6 seconds, which is good as I can easily calculate the zero power draw percentages.

 

[Simon R]

2 hours ago, SteamyTea said:

So almost enough to show a kettle boiling.

Unless it is a really large, full kettle.

It certainly enough to show  the kettle boiling. The spike at 14:00 was the kettle and toaster running together and pushing demand over 3.6kW ...and should not have involved grid power....should have waited for the kettle to boil. 

[DragonQ]

Any other ideas for a 48V ("low voltage") battery inverter that has local data access (via modbus TCP for example)? GivEnergy's only non-hybrid inverter is 3 kW only, would prefer something slightly beefier, say 4-5 kW.