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For off-grid in Finland, Deye, EG4, or Growatt?

Tunnerus

Tunnerus

New Member
Joined
Apr 7, 2020
Messages
76
Location
Southern Finland
I have tried to figure out what to get, but it is not easy to understand which EG4, Growatt, or Deye to get. I was already thinking to buy the EG4 6000XP last summer but then realised I likely have to import it from the Americas. It looks like Deye and Growatt are available in Europe and even in Finland, but their product offerings are very complex IMHO, so I struggle to choose.

My objective is to upgrade my current setup, which is:
  • MPP Solar PIP GK 3024 (3kW AC output, max 4kW PV, 24V battery)
  • 8x285Wp PERC panels
  • 3 parallel DIY-built 24V LFP-batteries
    • 100 Ah Winston
    • “130Ah” from Aliexpress
    • 280 Ah Eve battery
I am aiming for at least around 6-8 kW AC output power (240V 50hz AC as I am in Europe), and low idle consumption because the winter is dark and long. I would wish & need to change to a 48V batteries (thinking of connecting the Winston + Aliexpress in series, buying 8 more Eve 280 cells, and adding a couple of new 315 Ah 48V DIY batteries). Planning new PV as well.

Would appreciate any advice!
 
Can you source a Luxpower unit in the EU? The models are the basis for the EG4 units in the US and have similar, if not identical, capabilities. If that style/type of inverter is what you were looking for and made sense to you, you may have options there. (The company is Luxpowertek).

Question and thoughts: An EG4/Lux 6k unit is 'off grid' - meaning it's not grid interactive. Deye is. Growatt depends on model. Are you looking for grid interactivity (potential selling of power / grid power assist)? Changes what others might suggest to you.

Several of us in the US have sourced SRNE inverters. They're global, have been around for a long time. Several companies relabel them and there may be EU based resellers. Mine were ordered direct from China. They have off grid models and hybrids as well.

I'd be remiss if I didn't bring up Victron. Highest cost - probably. For the EU, lots of options, especially around pricing. Flexible - can grow by adding an inverter or solar charge controller without needing to replace the whole system. Can be intimidating versus an all inverter, but there are lots of resources available to help. You're posting in one such place now. :)
 
Deye and luxpower are very much in parity in features and build quality.

Eg4 is a relabel of luxpower Tek, even displays so on the Eg4 boxes, and , to the best of my knowledge only available in US split phase.
Luxpower Tek inverter can be bought in 230v 50hz / 400v 3 phase for eu grids

They are another league to mpp solar or growatt ( which is build by mpp solar's OEM, Voltronics).
Another thing to keep in mind on growatt, is that they are actually and actively pushing out firmware that limits battery compatibility to growatt only , so no 3rd party ( or DIY ) batteries

Support wise and local purchasing is another matter, within the eu ( eu consumer rights !) there are plenty of places to buy deye ( or sunsynk , which is a deye rebrand), I don't believe luxpower Tek has a eu point of sale yet
 
Last edited:
agtcovert said:
Can you source a Luxpower unit in the EU? The models are the basis for the EG4 units in the US and have similar, if not identical, capabilities. If that style/type of inverter is what you were looking for and made sense to you, you may have options there. (The company is Luxpowertek).

Question and thoughts: An EG4/Lux 6k unit is 'off grid' - meaning it's not grid interactive. Deye is. Growatt depends on model. Are you looking for grid interactivity (potential selling of power / grid power assist)? Changes what others might suggest to you.

Several of us in the US have sourced SRNE inverters. They're global, have been around for a long time. Several companies relabel them and there may be EU based resellers. Mine were ordered direct from China. They have off grid models and hybrids as well.

I'd be remiss if I didn't bring up Victron. Highest cost - probably. For the EU, lots of options, especially around pricing. Flexible - can grow by adding an inverter or solar charge controller without needing to replace the whole system. Can be intimidating versus an all inverter, but there are lots of resources available to help. You're posting in one such place now. :)
Click to expand...
Thanks for your quick response! No need for grid interactivity at this point :-) I am googling around to try to find luxpower.

I will also study SRNE. And if all else fails, I will turn to Victron although it might hurt my wallet... I like your point on V's modularity.
 
Last edited:
houseofancients said:
Deye and luxpower are very much in parity in features and build quality.

Eg4 is a relabel of luxpower Tek, even displays so on the Eg4 boxes, and , to the best of my knowledge only available in US split phase.
Luxpower Tek inverter can be bought in 230v 50hz / 400v 3 phase for eu grids

They are another league to mpp solar or growatt ( which is build by mpp solar's OEM, Voltronics).
Another thing to keep in mind on growatt, is that they are actually and actively pushing out firmware that limits battery compatibility to growatt only , so no 3rd party ( or DIY ) batteries

Support wise and local purchasing is another matter, within the eu ( eu consumer rights !) there are plenty of places to buy deye ( or sunsynk , which is a deye rebrand), I don't believe luxpower Tek has a eu point of sale yet
Click to expand...
Thanks for the information! At least a quick googling didnt bring up any Luxpower shop inside EU, which supports what you wrote.

Any pointers on "which Deye" to go for?
 
Tunnerus said:
Thanks for the information! At least a quick googling didnt bring up any Luxpower shop inside EU, which supports what you wrote.

Any pointers on "which Deye" to go for?
Click to expand...
Depends entirely on your peek loads and if you need 3 phase output or not.
The 6kw should be a doubling of your current system, but if you require 3 phase , the minimum that support that is the 8kw.

I personally run 2 x 12kw 3 phase sunsynk's (deye)
 
houseofancients said:
Depends entirely on your peek loads and if you need 3 phase output or not.
The 6kw should be a doubling of your current system, but if you require 3 phase , the minimum that support that is the 8kw.

I personally run 2 x 12kw 3 phase sunsynk's (deye)
Click to expand...
Need only 1 phase, peak load can be up to 6-8 kW, which is why I am aiming at that range. It is very seldom that we need more than 6 kW at the same time - that would mean running the coffee maker, the induction hob, and both heat pumps at full load all at the same time. I have a hard time imagining a realistic scenario where I would need above 8 kW right now. However, in the future "the only way is up" - modularity is king.

However, as the winter is long and dark, and the autumn too, low idle power is also important.
 
houseofancients said:
Depends entirely on your peek loads and if you need 3 phase output or not.
The 6kw should be a doubling of your current system, but if you require 3 phase , the minimum that support that is the 8kw.

I personally run 2 x 12kw 3 phase sunsynk's (deye)
Click to expand...
Which exact sunsynk/deye would that be? I am curious :-)
 
For example this 6k model: Deye SUN-6K-SG03LP1-EU hybrid inverter for 1032 EUR at the moment. It is a hybrid but obviously also works as off-grid. It does not specify the idle consumption, but it is quiet at least (<30db). Compatibility with diesel generator is a plus, I happen to have one. The wifi dongle does not seem to be included. Max PV is (only) 7,8 kW.
 
houseofancients said:
sun.store

sun.store - The Professional Marketplace for the Solar Industry

Solar equipment marketplace that connects installers with sellers across Europe
sun.store sun.store

Click to expand...
Thanks! I asked them for contact info to their partners, as they only do B-to-B.

In the meantime, found your Deye here:
energoshop.eu

Deye SUN-12K-SG04LP3-EU 12kW - three-phase hybrid inverter

Deye SUN-12K-SG04LP3-EU 12kW - three-phase hybrid inverter | Inverters \ Hybrid inverters
energoshop.eu energoshop.eu

What idle power consumption do you have with the Deye 12k?
 
Last edited:
deye.com

Deye SUN-7.6K/8K-SG01LP1-EU Hybrid Inverter - Advanced Solar Energy Solution

Discover the Deye SUN-7.6K/8K-SG01LP1-EU, a single-phase hybrid inverter designed for both on-grid and off-grid applications. Enjoy high efficiency, versatile battery compatibility, and robust safety features for optimal solar energy management. Learn more!
deye.com deye.com
16 KW of PV input 8 KW of AC output and can be paralleled. Single phase.
 
dmsims said:
Not Growatt

Victron prices have come down a lot recently
Click to expand...
I am slightly wary of the complexity in the Victron world. Which device or what combination of devices would I need to reach the same functionality? There have a feeling they have more modularity and options to build out later with more components, and options like using separate solar charger and inverter(s) instead of one device, but I am not sure what the benefits vs. added price would mean. It would feel more challenging to compare that to a single Deye
 
Quattrohead said:
deye.com

Deye SUN-7.6K/8K-SG01LP1-EU Hybrid Inverter - Advanced Solar Energy Solution

Discover the Deye SUN-7.6K/8K-SG01LP1-EU, a single-phase hybrid inverter designed for both on-grid and off-grid applications. Enjoy high efficiency, versatile battery compatibility, and robust safety features for optimal solar energy management. Learn more!
deye.com deye.com
16 KW of PV input 8 KW of AC output and can be paralleled. Single phase.
Click to expand...
Reading their specs, it says "Max. PV Input Power: SUN-7.6K: 9880W, SUN-8K: 10400W", where did you find the 16 kW?
 
Tunnerus said:
I am slightly wary of the complexity in the Victron world. Which device or what combination of devices would I need to reach the same functionality? There have a feeling they have more modularity and options to build out later with more components, and options like using separate solar charger and inverter(s) instead of one device, but I am not sure what the benefits vs. added price would mean. It would feel more challenging to compare that to a single Deye
Click to expand...

You could consider the Multi RS Solar: https://www.victronenergy.com/upload/documents/Datasheet-Multi-RS-Solar-Dual-Tracker-EN.pdf

Idle consumption is 20W
 
Tunnerus said:
Thanks for your quick response! No need for grid interactivity at this point :-) I am googling around to try to find luxpower.

I will also study SRNE. And if all else fails, I will turn to Victron although it might hurt my wallet... I like your point on V's modularity.
Click to expand...
I have exchanged emails with Luxpower, and they promised to put me in touch with their German distributor/partner. They quote 50-60W idle consumption, dropping as low as 20-30W if loads are below 10W, almost matching the Victron actually...
 
Last edited:
dmsims said:
You could consider the Multi RS Solar: https://www.victronenergy.com/upload/documents/Datasheet-Multi-RS-Solar-Dual-Tracker-EN.pdf

Idle consumption is 20W
Click to expand...
So the Victron Multi RS Solar would supply 4,5kW AC and accept 6kWp solar and cost around 200 € more, however, there is probably a quality factor too, and the idle consumption can reduce the night time battery drain by about 0,5kWh per night, which is around 50€ in battery cost. Not sure if additional devices (and cost) is needed to connect it to the cloud via wifi...

Any experiences of how easy or hard it is to expand the Multi RS Solar's AC and PV capacity with additional Victrons next to it? The Deye and Luxpower claim they can add many more in parallel.
 
Mutli RS AC: "Increases linearly from 4800 W at 46 VDC to 5300 W at 52 VDC
Peak power 7 kW for 4 minutes"

You can expand PV with more SCC controllers

For more AC you will need Multiplus and separate SCC

Cloud Wifi (and local control - I use MQTT) is via Cerbo GX - <200 euros or run it on a Pi

Deye units are good - if that suits better I doubt you will be disappointed
 
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