solazzz

See some discussion around getting kwh of energy consumed.. I am currently using the riemann sum method as above. It does work well, but I find it can easily be thrown off (when compared to the total energy consumed shown on the Tuya app). Any way to get the reading from the Tuya app into HA?

I still hear the clicking noise. It's when the BMS is limiting the charging to 0A but there is still enough solar to cover the load (and could potentially charge the battery?) I was under the impression that this is normal?

They should work together since I see Powerforum Store have bundled them in some new deals.

Sorry, the "batt type" screen as well. And the system mode screens. Will compare to my settings when home. I don't remember it happening recently, but maybe because I'm not home when the battery usually reaches 100%. Will try keep an eye.

Maybe share your battery and system mode settings?

With the Sunsynk it does seem like it uses the battery for its own usage. Am I correct in assuming that the pv+import+discharge-charge-export-load = inverter usage? Are you using the SS 8kw as well? And also the battery discharges 40w-80w throughout the day that isn't in the load, so assumed that is all it's own usage and losses in conversion. I don't have any voltage protector.

I don't export any power, or atleast try not to, I see small bits sometimes flow through. But rounds off to 0kwh almost everyday, once or twice was 0.1kwh. My settings are limit to UPS load only. Maybe I wasn't clear, but I was expecting import to equal the prepaid meter usage. But I know some meters take export as usage so just included that as well. I had 3days with total import of 1.5kwh, 0kwh export, but prepaid meter used 3kwh. Still monitoring further.

So ended up with an 8kw Sunsynk inverter, 2x 5.32kwh Sunsynk batteries and 8x 550w canadian solar panels. Went with the recommended installer from the place where I bought the inverter. My thinking was that should minimize some of the risk of faulty components vs faulty install. Inverter and batteries were installed in a day, and panels arrived few days later and also installed within a few hours. System has been running with panels for almost 4 weeks and I'm happy with the performance, exceeds expectations. The 8 panels are neatly squeezed onto that North-most facing roof, been getting decent production. Will post some stats later. There was a bit of shading in July with the low sun around 15:30 from the larger chimney (didn't see that coming at all, just made sure to avoid the smaller one). But seems to be getting better by the day. And most days I'm getting to 17:30 with 95%+ battery so not a big deal. Installer was a nice guy and really helpful with tons of experience on all types of systems. However, I think his experience was mostly with older types of inverters and he lacked some of the Sunsynk-specific or hybrid experience. So since I have everything on essential and geyser on a CBI ASC, this isn't a problem for me. But he was not able to get non-essentials powered from the inverter. This was tested with one plug that's not on the essential side, and also the geyser has a changeover switch to move from essential to non-essential, but it now operates as essential or completely off inverter. I suspect the CT is in the wrong place, as it does pick up grid coming into the inverter as a positive value but none of the usage from the non-essential plug. We were also not able to get the petrol generator to charge batteries via the aux port, nor from the grid side. Other than that, I'm happy with the install and the system. Next steps are to optimize a bit, will try taking a stab at HA. For now I manually adjust the first time slot SOC% and geyser times depending on the LS stage/times and weather/solcast forecast. Glad I went with the 8kw over the 5kw, it is very noisy though when the fans kick in. Fortunately, I have it tucked far away in the garage, which is a good 15m away from the db, but well worth it. Surprised to see 60%+ of my usage is from the geyser, so about 11.7kwh avg from the 18.2kwh avg per day. This is a 150l geyser with 3kw element and 2 adults 1 kid in the house. Have been able to reduce grid usage down to 3.3kwh avg, so around the 80% reduction, I'm happy. What's really bugging me is that the prepaid meter (wifi module) shows higher usage than the inverter import+export. I have everything on essential, the "non-essential" plug isn't in use, so no idea what could be causing this. Anyone experience similar?

Also on a similar journey Was considering the geyserwise, maybe even a gas geyser, who knows. For now managing to get by with the CBI timer and manual runs here and there. I did have one day where the loadshedding level changed during the night and my geyser got the battery down to 22%, just 2% shy of shutdown. So also looking at the Home Assistant route, I see a lot of good info on this forums. Will try get there, slowly.

Personally, would just compare pricing on the main components (inverter, batteries, panels) and have the installer bring the rest plus labour. Or have installer bring everything but be close in price to what is readily available. There is the worry-free factor when installer is also the supplier. But the price needs to be reasonable.

I'm using the geyser on essential load with a cbi asc as a timer/switch. This works for me. The geyser runs during PV hours (11AM-3PM) and an early morning or late evening run depending on when showers will happen or have happened. I'm fine using the battery for this. I tweak the 5AM-7AM SOC % based on expected weather/LS for the day and run the geyser in that time slot (moves with LS). My loads are not high so staying within the 8kw limit without grid isn't an issue even with the 3kw element. I didn't go with the Aux port as that would require another 20m+ of AC cabling from inverter to DB and I thought it would not add much value. I now realize that I had some misunderstandings. It would work for me as it would allow me to do everything I currently do now, as well as provide a buffer to not deplete batteries when the grid is down. That risk exists while it is on the essential side. I'm going to try address this with HA. An Aux load with "on grid always on" ticked and let's say battery off of 30%, solar set to 0w, is basically an essential load with its own SOC cutoff when grid is not available?

From my readings, the "on grid always on" does not allow for AC bypass but rather it will stick to your timer settings when grid is available. So either PV+battery when above the SOC% or PV+grid when below. I was also hoping it would mean AC directly, which would've been great for a geyser. So ended up going with geyser on essential and I manage it manually now, soon to go the HA route. But I have not tested this myself, though some did confirm (think it was this forum, if not the sunsynk forums). Please do let us know how the testing goes on your side.

What is supposed to happen when the battery reaches the shutdown SOC %? My understanding is that the load will no longer be powered, but the inverter will remain powered from the battery and the battery will charge from PV and/or grid (if settings allow). And once the restart SOC % is reached, the inverter will operate as normal. During the time between shutdown and restart, the load will not be powered. Is that correct? Thanks in advance

I think it's normal, I also noticed this when the battery is close to 100% and the BMS limits the charging amps. You will notice under the LiBMS page that the BMS will likely have the charge amps set to 0A. Once it drains a bit it will go back to normal. That is my experience, maybe the more knowledgeable can comment as well.

That is great, will give it a test this week