Limitations of a DC coupled battery. MyEnergi products can't determine if the inverter output is PV generation or battery discharge. You can try setting an export margin or use something like Home Assistant to only turn on MyEnergi products if battery SOC is above say 90%.
Export margin is only available on one device and my Eddi is set as master so that's where its set. Even with that it still tricked in a charge all day when it wasn't supposed to.
Also I never understood the DC limitation. Why isn't it possible to just put another CT clamp on the battery feed so that Myenergi can tell the difference?
Give MyEnergi a call on Tuesday, their phone support is excellent
CTs only work with AC. You would need something like a DC shunt to monitor a hybrid battery.
Which one is the master? I had issues when the Eddi was the master, which all sorted itself out once I switched them around.
@DrPhilG try set Eddi as Priority 1, Zappi as Priority 2, I found this workaround solved the Eco+ issue for me (although I still think they've mucked up the basic logic in last couple of updates, on the ME forum someone mentions an official bug but I don't know if ME has acknowledged it)
I'm sure this has been asked before but what is the best database to use on the PVGIS calculator?
Theres a choice of Sarah, Sarah2 and era5
https://re.jrc.ec.europa.eu/pvg_tools/en/tools.html
SARAH2 is the most recent model. I'd go with that.
Hi Everyone,
Currently looking at extending my array.
I have:
6 x 300w South x South East
5 x 300w South x South West
I've bought 6 400w panels so I'm going with
6 x 400w South x South East
11 x 300w South x South West
I can fit another 2 on that string technically bringing it to:
13 x 300w South x South West = 3900W
I have a Sofar 5.0 KTLM G2 and the datasheet says a max of 3500W per string.
Considering it's not a great angle and it's SxSW is it ok to go over the max or will it lead to problems and should I just go with the 11 or maybe 12?
You need to watch the VOLTAGE maximums per string. Look at the VOC for each panel and that tells you the max number of panels per string
Looks like: 39.85v
Not sure how that corresponds to:
Hi all, I've a new pv system installed on Monday 8kw with a 6kwh sofar hybrid inverter. Yesterday all was well up until about 1800 when the myenergi app seems to have frozen. The app seems stuck on what as happenig at 1800 and hasn't updated since. Installers can't get back to me until after the weekend. Looking at the Zappi screen the system is still generating and exporting etc. I've restarted the hub but nothing changed. I've logged out of the app and logged back in again but no change. I've installed the App on a different phone and logged in but everything is stuck. Any ideas?
The App does drop a lot but generally not for that amount of time, I’d give MyEnergi a call tomorrow, their phone support crew and very knowledgable
Have you an inverter WiFi dongle? Your installer should be able to source one. Essential imo. Get yourself one asap.
The installer has a wifi dongle fitted and everything worked fine for the first 24 hours but then just froze. I'll give MyEnergi a call and see if the issue is their end or mine.
have you tried asking on the MyEnergi forum, just give them your hub serial number and they'll check if anything is stuck on the server
https://myenergi.info/discussion/all
Cheers JK, didn't even know that forum existed. I've created a post so hopefully someone will be able to sort it.
Just seen this now, you can measure DC power via a CT, but myenergi cant as it doesn't know the voltage (of the battery)
Are you talking about measuring DC with the standard MyEnergi CT? Because that won't work.
There are lots of active electronics required for the zero-flux CTs too. If they wanted to measure DC battery power, they would be better off producing a DC shunt with Surlock connectors and transmit the readings over 869MHz.
No not saying the myenergi ones would work, they won't
But it's not impossible,like you said DC can be measured with CTS..
But that's not a clip on, and still doesn't have a voltage reference. It's not worth their time to try and develop one.
The shunt with surlock connectors is a good idea, power, current and voltage... If only there was some way of feeding information into their system.
Weird issue with my 6kW 5G inverter.. It's rather fresh - only installed 10 days ago. For the first few days I could see plenty of electricity being produced, then the Eddi/Zappi would have at it and the rest would be exported to the grid.
Since a couple of days, the inverter only produces enough to match house demand. For example, south-facing 6.5 kWp array, clear skies, battery full, inverter produces 0.4 kW which is the load to the house and there's zero export to the grid. If I turn on any kind of load (Eddi/Zappi/Kettle/etc), the inverter ramps up and gives as much as is needed. When I turn the loads off, the inverter ramps down to the baseload again.
I imagine this is somewhere in the settings and I might have messed it up myself, but for the love of god, I can't find it. Any ideas?
Looks like the export limit is turned on, I'll go have a look at the one I have here in a bit, but its in the advanced settings. EPM i think its called.
Sounds like same issue as @spacetweek . Solution in the post quoted below.
Not sure whether I’m seeing the same. Are you monitoring with Solis app or Myenergi?
I'm keeping an eye on it with both Solis and Myenergi apps. And retrospectively with smart meter data from Bord Gais.
Grid settings were looking alright but I just re-selected and saved them this afternoon, and it started working. Why do we have to deal with stupid Chinese software goddammit 😅
Hi,
Quick question, I have a Solis hybrid 6KWh with 2 strings. From the datasheet the MPPT should kick off at 120V (or 90V I can't rember) but looking at the graphs there is no current been generated till well pass that mark. In the picture PV1 is a 9 panel string and always seems to start generating after hitting 261V or 29V per panel. PV2 behaves exactly the same.
Am I missing something ?
Thanks
i’ve a couple if week old 3KWh 8 panel ( most terrace roof will take, all with optimisers, as all shaded by dormer or chimney sometime in day) solis hybrid 5KW system with 2x 3 KWh pylontech batteries.
Ive just experimented with night charging ( at normal rate, as my smart meter is currently dumb and not communicating with supplier) putting 3 KWh ( at 15A ) into batteries to get 50% ish in the morning. ( first go , rookie mistake, setting charge KW rate for 250 V not the 50V of the batteries ;)
I notice this overnight grid power ti batteries counts as “generated” on the cloud software graphs !
Question is it better ( for the batteries) to do this, and use batteries instead of grid for morning, or let the batteries stop discharging at default 20% SOC, sitting “resting” and use the grid until the solar panels put some charge into the batteries ?
overnight charge, does any one know what the regular nightly oscillations are ?
I assume the odd power to grid ( which is prohibited) are just software glitches.
bit of a software glitch from Solis cloud today, don’t think im a power station !
no export selected !
Total consumption 959 KWh and exported 956 KWh , nealy a MegaWatt
is there anyway of deleting erroneous data ? this mucks up the graphs a bit !
Does the solis backup output need a meter like the main output : PVout - breaker- meter -breaker—— distribution box mcb (with meter and monitor loop) or Backup just go via breaker into a separate backup distribution box / socket via a MCB ? ( or changeover switch ? )
![Photo of [Deleted User]](https://w1.vanillicon.com/v2/11f397efbb618f280f346771bb290fe0.svg)
