Feature request: Grid feed in with 50watt increments

Q&A and troubleshooting
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1

Hello.

I think it is possible with node red but i do not have knowlage for that to be honest.

Still trying to grid feed in 770w ( i know i am the only one, max i can feed in is 790 but i would not like to play that close to the limit). Location Estonia.

so i thought even 50w for our small nano producers is a gain.

i try to study node red because i would like:

Watch enefit energy prices, if kwh is under 1 euro cent then it disable feed in.
Feed in 770w if battery is full (absorb or float)
Dashboard view in node red
Override buttons in node red (disable feed in and force feed in)

multi II
Cerbo
smartshunt
3xmppt
25kwh batteries with JK bms-es

ALL are connected to cerbo and cerbo is online + vrm and other stuff.

If question is in the wrong location or some other issues. feel free to delete the topic, no harm taken.

Thank you
Silver

2

Very doable in node red. Essentially you just want ESS setup with max export set to 770W.

Then if you energy provider has an api you periodically query the prices and do something like:

if( energyPrice < 1){

return 0;
}else{
return 1;
}

and have this function node feed into a node that activates/deactivates feed in.

You dont need to handle the 770w via node red as that’s built in option into ESS.

Force feed in is a little more difficult you essentially edit the grid setpoint but also doable in node red. LEt me know if you havent already done this is you want a hand with specific code etc

3

Thank you for your answer, i appreciate !

force feed is not nessesary.

at the moment i always have to toggle between remote console-ess-grid feed in-enable dc feed in or not, depending on prices.

elering in estonia has a point where other can query, victron owners too but writing a code is something i cannot do.

if enabled grid feed in, it has only 100w increments, so i thing i should stay about 700w limit, because other options are not possible.

i would just like to get rid of watching enefit prices (done it for last 2 years EVERY DAY) and i am tired of it :smiley: