ckies

Thanks for this post! I've had exactly the same issue and wrecked my brain a few days until this came through!

Thank you Mike. Out of curiosity, why is Goodwe so secretive with their data compared to Victron where almost everything is available publicly - even open source software for some applications?

Thanks for the hint Mike - who did you engage with to sign the NDA?

This is another idea to consider - sniffing the traffic between the PV master app and the inverter - if possible, considering that in this case the inverter is the APN

Great, thanks! This sounds like the easiest and quickest option. Will try that. If any useful results are obtained, I'll post.

Thank you for the wise words! I was using a laptop on the same WiFi APN as the inverter for sniffing. Hopefully I can identify the inverter's IP - then serious network ninja work can begin!

My statement of "raw real time once a minute" are based on assumptions made from what I've read on some other posts. By raw I mean actual data (not filtered or smoothed - which introduces a time delay) which I can use to turn on and off discretionary loads automatically - such as pool pump, dishwasher, tumble drier, EV charging. The data might be encrypted, but I'm guessing it is not. Just yesterday I saw a friend's data (via the internet) of his Victron installation. My jaw dropped and I was green with envy in terms of what he has access to. Come to the party Goodwe!

I also looked at this route. I'm no network expert (know enough to be dangerous) and haven't spent much time on this yet. I scanned the connections on the local network, but missed finding the inverter as a connected device (unless I'm missing some point). Perhaps I must look at the router's connections? I wanted to do this to scan the traffic from the inverter node. With up to 10 people busy with their PCs, phones etc. on the LAN makes a generic traffic scan quite hectic :). I like your idea of creating a kind of gateway (additional APN) to route the inverter data to SEMS - in that way it would be a breeze to sniff. I have a few ESP8266 modules waiting for something to do. A quick search revealed this https://runtimeprojects.com/2017/03/extend-wifi-with-an-esp8266/. Looks like this might be a starting point. It allows packet filtering, has MQTT etc. Any hackers keen to give it a bash? Unless it is a lot easier than this!

I looked at that - apparently does not work on the latest 4.5kW inverters - and, as stated in the article "Pay attention, RS485 will only work if you disconnect the WiFi module and restart the inverter. They cannot work simultaneously." This means that your SEMS portal info will disappear. I'd prefer to keep SEMS going - but I'm also keen to have finer grained unfiltered real time data for load control. On we march

Jaja! I know! I have a smaller Victron MPPT and inverter I use when camping - so know all about that - hence my Goodwe frustration - but the Goodwe is quite a useful combo - and accepted my City of Cape Town. One day we'll figure it out. Will be very easy to do once we hacked the network protocol ;) It send raw data over the internet to the central server once a minute - which is good enough for me.

I know this is a few years on - but I have just bought a 2nd hand 2017 i3 and I have to confirm that I fully agree with all of the above! And it is a great conversation piece Just gave a waiter at a restaurant a spin - his mouth hung open... Any update on your experience since?

Hi, I'm keen for exactly the same! I also have an EV which I would like to charge when there is surplus PV. I've come across some posts where it was done - so it must be possible. We need to hack the protocol of the inverter publishing its data to the server portal. Apparently it pushes data every minute, which should be fine for most applications. Anybody out there with some pointers?

Hi, have you made any progress with the Raspberry Pi interface to the inverter? I'm keen for something similar (to for example switch pool pump on and off, depending on PV supply and battery state)