My current system uses a 12kW Single Phase Sunsynk Hybrid Inverter with Volta Stage 4 Battery. I am very happy with my setup, even through I need to add one or two extra batteries.

I'm looking to install another 2 systems for family sometime soon. I'm also looking to potentially upgrade mine as I switch to EVs. I can always go with sunsynk for the new installs, but my installer has warned me that they are starting to experience long lead times for repairs (he took one out the box not too long ago... it was faulty, and sunsynk took 9 weeks to repair it). Perhaps they are getting pretty popular and this is putting pressure on repairs, I dunno. So far, I've had no issues with mine.

One option I have is to switch to Sungrow and move to a High Voltage solution, then move my system to my parents place as my inverter / battery combo is more than they need. Downside is that the only sungrow inverters that work with Batteries are maxed out at 10kW. So I'd need to install 2 of them, and then I would no longer be able to feed back into the grid as i have a 60A breaker and need to stay below 13.8kW.

Then I was looking at the Deye units... they are a bunch cheaper than Sunsynk, and they seem to have a new app now? From a cost effectiveness perspective, it's attractive to look at Deye, when they are essentially the same hardware as sunsynk.

So... question time.

Does anyone have experience with Sungrow?
What's the support / app experience like with Deye in 2025?

4 minutes ago, display_Name said:

So... question time.

Does anyone have experience with Sungrow?
What's the support / app experience like with Deye in 2025?

I am satisfied with the basic APP of the Deye. For some that need the real time info of all the measurements it seems Solar Assistant is the way to go.

We are many users here with Deye inverters so ask what you want to see from the Solarman APP and we will gladly share.

Deye cloud app is as good if not better than Sunsynk.

Go with deye if its cheaper than Sunsynk. Repairs also much quicker than Sunsynk in my experience. Jhb service centre for repairs.

The HV deye options are also well priced if you need something 3ph from 30kw to 50kw

Edited September 2, 2025Sep 2 by abd7

@display_Name Also include in your research Solis 12kW inverter. The price is cheaper here on the PowerforumStore but also look at the specs.

My answer a year ago would've been Deye or Sunsynk + Solar Assistant, but with SA's recent change from one time perpetual license to monthly subscription....

Victron...

you will never be disappointed with the VictronConnect app and the VRM portal

6 minutes ago, stefan44 said:

Victron...

you will never be disappointed with the VictronConnect app and the VRM portal

Agreed the app and portal are fantastic. The actual hardware support however not so much - had an incident 2 years ago - my Multiplus inverter blew all its caps -- the result from the "support" team was that it was dust related (the inverter was only installed for 2 yrs at that time inside the house...) and that dust isnt covered by their warranty -- ended up going with Sunsynk - very happy with the inverter but they do have a lot of issues with their portal/app data updates.

17 hours ago, Moffat said:

@display_Name Also include in your research Solis 12kW inverter. The price is cheaper here on the PowerforumStore but also look at the specs.

Holy shit. A year ago when I was looking at Solis, they didn't have a 12KW. I was investigating 2 x 6kW Solis inverters. They do now and the specs are insane. Sunsynk 12kW is capped at 15.6kWp PV array, while the Solis is 19.2kW usable with a 24kW max PV array size... It has 6 Strings on 3 MPPTs. How's the software? I suppose I should check out their battery compatibility list. Wonder if they are compatible with Volta batteries?

Decent Pricing as well.

6 hours ago, madness_za said:

My answer a year ago would've been Deye or Sunsynk + Solar Assistant, but with SA's recent change from one time perpetual license to monthly subscription....

There's a subscription now? I've not seen this for mine yet?

Hello there are other options like the Solis Range they are all LV models with Standard 10 Year warranty fully NRS approved full swap out warranty and you can use a wide range of different LV batteries on these also much higher battery capacity potential their MPPT PV Range is much wider than majority of the products in the market and normally double the capacity of the inverter and also support large panels. They have built in earth neutral bridge bond relays and a very nice intuitive app and web portal. The machines are very robust and can typically handle double their capacity for 10 Seconds so inductive loads are not a problem. Their Utility to battery changeover time is 4ms so you do not notice the changeover. There are also the 30 and the 50 KW Hybrid HV units. They can also parallel up to 10 Units according to the manufacturer.

Power Forum Renewable Energy Store | By Powerforum.co.za

Solis S6 12kW Single Phase Low Voltage Hybrid Inverter

Solis S6 12kW Single Phase Low Voltage Hybrid Inverter Part No: SOL-S6-EH1P12K-NV-YD-L Storage

Power Forum Renewable Energy Store | By Powerforum.co.za

Solis S6 12kW Three Phase Low Voltage Hybrid Inverter

Solis S6 12kW Three Phase Low Voltage Hybrid Inverter Part No: SOL-S6-EH3P15K-NV-YD-L Storage Systems - Hybrid Inverter

Power Forum Renewable Energy Store | By Powerforum.co.za

Solis S6 15kW Three Phase Low Voltage Hybrid Inverter

Solis S6 15kW Three Phase Low Voltage Hybrid Inverter Part No: SOL-S6-EH3P15K-NV-YD-L Storage Systems - Hybrid Inverter

Power Forum Renewable Energy Store | By Powerforum.co.za

Solis S6 ADVANCED Three Phase 30kW High Voltage Hybrid

S6-EH3P(30-50)K-H 30K/40K/50K S6-EH3P(30-50)K-H series three-phase energy storage inverter, suitable for commercial PV energy storage systems.

Edited September 3, 2025Sep 3 by Powerforum Store

6 hours ago, display_Name said:

Holy shit. A year ago when I was looking at Solis, they didn't have a 12KW. I was investigating 2 x 6kW Solis inverters. They do now and the specs are insane. Sunsynk 12kW is capped at 15.6kWp PV array, while the Solis is 19.2kW usable with a 24kW max PV array size... It has 6 Strings on 3 MPPTs. How's the software? I suppose I should check out their battery compatibility list. Wonder if they are compatible with Volta batteries?

Decent Pricing as well.

My only gripe with the software, which may not be unique to the Solis is that I would love these inverters, by default having the option for built-in ability to gather information in respect of all functions (pv production, loads, battery info etc). This would greatly help in the event that internet is down. I also see an opportunity to have the datalogger on this and all inverters having the ability to have a TFT card to store data locally as a redundancy whilst other data is upload to the Solis Cloud. On the whole I have been very happy with my purchase with issues being battery related, not inverter related, so would definitely recommend it given as you have also noted if offers better specs and pricing.

3 hours ago, Moffat said:

My only gripe with the software, which may not be unique to the Solis is that I would love these inverters, by default having the option for built-in ability to gather information in respect of all functions (pv production, loads, battery info etc). This would greatly help in the event that internet is down. I also see an opportunity to have the datalogger on this and all inverters having the ability to have a TFT card to store data locally as a redundancy whilst other data is upload to the Solis Cloud. On the whole I have been very happy with my purchase with issues being battery related, not inverter related, so would definitely recommend it given as you have also noted if offers better specs and pricing.

Appreciate the feedback. My thinking is that the better specs and pricing probably outweigh the downsides here. I wasn't expecting to be looking at Solis again. This thread has me very interested again. Thanks all!

I think we all have our requirements. The ability to download data stored in the inverter via a USB port or TFT is one I would like. But then on the other hand due to daily values for PV generated, load value and battery total is already available on the Sunks/Deye inverters as well as real time values is good enough for me. I would only like the mentioned inverters to use a better scale for the bar graphs for daily, monthly etc. The current % scale is not always enough.

@Moffat

1 hour ago, Scorp007 said:

I think we all have our requirements. The ability to download data stored in the inverter via a USB port or TFT is one I would like. But then on the other hand due to daily values for PV generated, load value and battery total is already available on the Sunks/Deye inverters as well as real time values is good enough for me. I would only like the mentioned inverters to use a better scale for the bar graphs for daily, monthly etc. The current % scale is not always enough.

@Moffat

I think the background to my needing local redundancy is that when you have internet connectivity issues, you may lose data either over the days internet is down or within the day when data is down, hence the thought of locally having data being saved as well.

6 hours ago, Moffat said:

I think the background to my needing local redundancy is that when you have internet connectivity issues, you may lose data either over the days internet is down or within the day when data is down, hence the thought of locally having data being saved as well.

This illustrates my point. The total production of 8kWh was for the whole day and not just from 06h to 12h. From 12h to 18h I had my dongle not connecting to my WiFi as I was using a phone hot spot. This never happens when using a normal free standing router.

The same applies for the total energy that went to the battery as well as the total power used by the load. Thus all the values are stored as daily totals on the inverter even if there is no Internet or even if a dongle is not used at all.

This is on a Deye.

This aspect of Deye inverters (on free-standing router) is a great differentiator over the Solis, though Solis may trump in respect of specs and price and also in respect of my S6 6kw Hybrid Pro, the quietness of it. Not once have the fans ever kicked up and my whole household is running off it, save for geyser.

44 minutes ago, Moffat said:

This aspect of Deye inverters (on free-standing router) is a great differentiator over the Solis, though Solis may trump in respect of specs and price and also in respect of my S6 6kw Hybrid Pro, the quietness of it. Not once have the fans ever kicked up and my whole household is running off it, save for geyser.

My 6 year old Solis 4g grid tied also could show the accumulated output over the life or for the month to date on the screen. Bear in mind being grid tied it was only on during the day. It also did not even have a fan. Never missed a beat and I have the highest regard for Solis inverters. Buying new I would choose the Solis. One of our forum members partly sponsored me to sell me his 5kW when he upgraded 😀

On 2025/09/03 at 12:59 PM, display_Name said:

There's a subscription now? I've not seen this for mine yet?

https://solar-assistant.io/help/updates/terms_update_oct_2024

I understand the need to fund future development but it feels a bit bait and switchy especially for legacy customers.

I'm going to have to migrate over to a HA solution eventually

On 2025/09/02 at 12:09 PM, Scorp007 said:

I am satisfied with the basic APP of the Deye. For some that need the real time info of all the measurements it seems Solar Assistant is the way to go.

We are many users here with Deye inverters so ask what you want to see from the Solarman APP and we will gladly share.

Have you ever looked at Home Assistant for you inverter data @Scorp007 ?

Haven't looked at Solar Assistant recently so don't know if it has changed at all but I would say the integrations and automations you can do with all the other smart devices/switches/Solar Forecasting/Load Shedding integrations etc is a major advantage.

On 2025/09/06 at 12:59 PM, Sc00bs said:

Have you ever looked at Home Assistant for you inverter data @Scorp007 ?

Haven't looked at Solar Assistant recently so don't know if it has changed at all but I would say the integrations and automations you can do with all the other smart devices/switches/Solar Forecasting/Load Shedding integrations etc is a major advantage.

No I have thought about it but the mountain still seems too steep as well as the time to put into the effort. Happy with my JK BMSes via Bluetooth as well as using voltage only for all my battery banks made up of lithium drop inns, 2 x DIY. With summer on its way my SOC is 40-50% in the morning when PV kicks in and at 100% just after 12h. With a low daily load of about 8 kWh the system is working great for me. The whole house runs of the Deye 5 kW.

Grid use is so low and production exceeds my consumption so not a priority for me.

Graph for my system. Red is load. Blue PV production and yellow grid use

On 2025/09/06 at 12:59 PM, Sc00bs said:

Have you ever looked at Home Assistant for you inverter data @Scorp007 ?

Haven't looked at Solar Assistant recently so don't know if it has changed at all but I would say the integrations and automations you can do with all the other smart devices/switches/Solar Forecasting/Load Shedding integrations etc is a major advantage.

9 hours ago, Scorp007 said:

No I have thought about it but the mountain still seems too steep as well as the time to put into the effort. Happy with my JK BMSes via Bluetooth as well as using voltage only for all my battery banks made up of lithium drop inns, 2 x DIY. With summer on its way my SOC is 40-50% in the morning when PV kicks in and at 100% just after 12h. With a low daily load of about 8 kWh the system is working great for me. The whole house runs of the Deye 5 kW.

Grid use is so low and production exceeds my consumption so not a priority for me.

Graph for my system. Red is load. Blue PV production and yellow grid use

FYI - There is a ESPHome integration for home assistant that will allow you to pull the data from your batteries into Home Assistant as well

Connecting it up to the DEYE is a piece of cake now adays :-)

GitHub

GitHub - syssi/esphome-jk-bms: ESPHome component to monit...

ESPHome component to monitor and control a Jikong Battery Management System (JK-BMS) via UART-TTL or BLE - syssi/esphome-jk-bms

19 hours ago, Scorp007 said:

No I have thought about it but the mountain still seems too steep as well as the time to put into the effort. Happy with my JK BMSes via Bluetooth as well as using voltage only for all my battery banks made up of lithium drop inns, 2 x DIY. With summer on its way my SOC is 40-50% in the morning when PV kicks in and at 100% just after 12h. With a low daily load of about 8 kWh the system is working great for me. The whole house runs of the Deye 5 kW.

Grid use is so low and production exceeds my consumption so not a priority for me.

Graph for my system. Red is load. Blue PV production and yellow grid use

If you take a leap of faith and interrogate your JK bms to communicate with our Deye inverter here is a excellent post from @WannabeSolarSparky that did the legwork.

JK BMS with DIY Battery and comms https://powerforum.co.za/topic/25202-jk-bms-with-diy-battery-and-comms/

On 2025/09/05 at 3:31 PM, Scorp007 said:

My 6 year old Solis 4g grid tied also could show the accumulated output over the life or for the month to date on the screen. Bear in mind being grid tied it was only on during the day. It also did not even have a fan. Never missed a beat and I have the highest regard for Solis inverters. Buying new I would choose the Solis. One of our forum members partly sponsored me to sell me his 5kW when he upgraded 😀

Unfortunately as you may be aware the S6 does not have an LCD to display data or change settings but just light indicators to indicate status (Power; Status-Normal/Abnormal; Wifi; Bluetooth; RS485 connection) so that data collation doesn't happen on-screen.

2 hours ago, Moffat said:

Unfortunately as you may be aware the S6 does not have an LCD to display data or change settings but just light indicators to indicate status (Power; Status-Normal/Abnormal; Wifi; Bluetooth; RS485 connection) so that data collation doesn't happen on-screen.

Looks like one would have to upgrade to the 12kW Solis, as per the post of @Powerforum Store above, to get a screen.

14 hours ago, GreenFields said:

Looks like one would have to upgrade to the 12kW Solis, as per the post of @Powerforum Store above, to get a screen.

All new models including the 5 6 and 8 KW will come standard with screens and standard 10 Year Warranty. The ones depicted here are the older models I own 2 x 6KW units and for me the screens don't matter I use the desktop remote app and it works well for me.

Solis is currently working on improving the time delay on the app and web portal reporting rate they claim that the delay will be reduced from 5 Minutes to 1 to 2 seconds mainly limited by internet speeds and latency.