In February, my Home 4 storage system was installed, which was throttled down to 70% by SENEC. At the beginning of November, the time had come - my storage system was replaced. Before I go into this, I'd like to share some experience with the "old" storage system, which I had ordered with 12.6 kWh. If I convert this to 70%, that makes approx. 8.8 kWh. My house consumption in summer was 0.5 kW, which, in my (perhaps too amateurish) opinion, should have been enough for many hours to easily get me through the night. But that never worked out, after 6 hours it was always the end of the day and the grid had to kick in again. If I do the math, I end up with just 3 kWh, let's say a generous 4 kWh. That's roughly 32%.
This is of course a joke and I ask myself: who has also had this experience? And: who knows how SENEC will compensate for the lost capacity? I will definitely look into this further and contact my general contractor, but also SENEC itself.
Now to the Home P4 hybrid. I didn't believe that it would be replaced in the near future, but it was D-Day at the beginning of November and the memory was replaced. Not the battery modules and the control unit, no, the entire device. It looks exactly the same on the outside as it does on the inside. The necessary updates were carried out via the Internet connection (unlike the Home 4, where several USB sticks had to be sent to the installer), the replacement was completed within 2 hours and everything looked the same as before, except ...
- only 5 instead of 6 battery modules fit into the storage unit
- Home Assistant integration has not worked since then(1)
I've only had 1 really sunny day since then, so I can't judge whether the battery charges to 100% (so far the maximum value has been around 80% . after all) and how far I get with it in phases without sun. It would be so easy if it were easier ... but it isn't. I will report again.
(1) In my opinion, this is because the new storage systems are only read out indirectly via the Web API via the SENEC portal and the units of measurement do not match the energy dashboard (e.g. kWh are not returned for the PV electricity generated, but kW - the dashboard does not like this. However, it is possible to convert this.
Hello,
After switching to a SenecP4, I am facing the same problem of connecting to a SmartHome system. Is there a good description somewhere of how the SENEC P4 can be read out via the Web API. So far I have loaded everything directly (via the lala.cgi) into a Homematic system (CCU3).
Thanks, greetings, Alex
Hi Alex, the Web API is generic and should work for all storage devices. Unfortunately, I don't know how this works with a CCU, for Home Assistant there is a custom component for the SENEC connection, which provides all values (via entities) after configuration.