Growatt or Solar edge 25 March 2022 at 9:41AM in Green & ethical MoneySaving 20 replies 2.3K views

arty688

Hello,

Just about to push the button on solar and my favorite quote so far I have a choice between 2 x 6.3kwh Growatt batteries or a 10Kwh Solaredge batteries(the new Energy bank one). My PV system needs optimisers due to multiple roofs and shading.

The Solaredge battery is about £1k more expensive and less capacity 9.7kwh vs 11.7kwh but the Solaredge is more efficient ,better integrated and less boxes on the wall (1 vs 3) so neater .

Has anyone got any thoughts on this choice ?

Cheers

2nd_time_buyer

The Solaredge battery is DC coupled. So you are going DC to AC.

It you go with a Solaredge system and a growatt AC coupled inverter, then you will be going DC to AC to DC to AC.

 It would be interesting to know if anyone has done a comparison of the difference in roundtrip loses. But a finger in the air guess should be around 10-20%.

I have a Solaredge inverter and optimisers. In hindsight I would have gone with Tigo optimisers and a hybrid inverter - probably Givenergy

arty688

The Solaredge says >94.5% efficiency I'm guessing that's being charged from solar panels rather than the grid.
The Growatt not so sure on the efficiency I'm guessing not as good.

Screwdriva

100% Solar Edge. 

JKenH

Screwdriva said:

100% Solar Edge. 

I hear very good things about SolarEdge and wish I had gone with that for my solar panels/inverters. Batteries may however be another story. 

It is very easy to say 100% SolarEdge but without a little more substance to the comment that can sometimes come across as, shall we say kindly, brand loyalty. 

Here there is a significant cost penalty/kWh with SolarEdge and the OP may be looking for advice, perhaps based on experience, as to whether the additional cost is justified (beyond the benefits they already identified). 

Chris_Type_R

Choosing solely on brand name, it'd be SolarEdge for me.

I replaced my inverter with a Growatt recently - good price, painless install etc. The documentation and software is poorly translated - with the inverter web software appearing quite stale. I fired off a support query which went unanswered. I'd certainly not want to tackle a warranty claim.

Iceburnmarko

Screwdriva said:

100% Solar Edge. 

Sorry after your comments on other thread where u said “all Chinese” are bad your 100% here is meaningless.

Screwdriva

Iceburnmarko said:

Sorry after your comments on other thread where u said “all Chinese” are bad your 100% here is meaningless.

Makes 0% difference to me. No Chinese inverter company is comparable except on price.

arty688

Are we talking Chinese owned or manufactured or both ? As its not unusual for most companies to have a manufacturing facility in China , Solaredge does for example.

Screwdriva

arty688 said:

Are we talking Chinese owned or manufactured or both ? As its not unusual for most companies to have a manufacturing facility in China , Solaredge does for example.

Chinese owned brands typically demonstrate massively inferior customer service experiences, quality standards and industrial ethics. Examples in non-energy industries would be Huawei, Xiaomi etc.

While I'm not a fan of products that are made in China, I realize that these are a more pragmatic, often unavoidable middle ground. When so, always go by the brand's reputation. That said, I would pick a component made in Japan or Korea, every single day of the week, if the option existed. 

Solarchaser

 Not had solaredge,  have had growatt. Would advise against growatt