GSL is the manufacturer on the GSL branded 12kw Hybrid inverter. I have their documentation and I've confirmed with their CEO that they have manufactured this and are selling directly.
Edited: Later in my conversation with them, they said they developed it jointly with LUX.
Glad to see another voice supporting this inverter. I think it is wonderful that there is an alternative developing as a competitor to SolArk. If it turns out to be as good as they say, it will be a great inverter hopefully at a better price point. As I said before, I am waiting for more information to be provided by GSL. They currently have the inverter displayed as part of their splash screen now, but the webpage for the inverter still hasn't been published, and their older 12k and 15k inverters are still on their website. They sent me an unpublished webpage link that doesn't really provide any new information. They say that the inverter will be published on their website sometime in October.
Now to clarify some things again. It is clear to me that GSL is not the manufacturer of this inverter no matter what they say. I was told the same things a couple of months ago when I talked with their CEO. The word
manufacturer could be interpreted several ways. LuxPower is the
engineering organization behind this inverter. GSL is the
reseller. I have no idea and don't care who the actual
fabricator is. What I know is that the only way to buy this inverter currently is through GSL. Think about it though. What kind of electrical engineering depth does GSL have? How many inverters have they designed before? How many electrical engineers do they employ that can engineer a complex hybrid inverter if they have never done it before? What kind of manufacturing facilities are required to fabricate the motherboard? Why would an inverter engineering company who already has electrical engineers and the expertise designing inverters need GSL's help? Does anyone really believe GSL and LuxPower sat in a room designing the schematics together?
What I think has happened is that GSL contacted LuxPower to develop them a new inverter. They probably worked with LuxPower to define the functional requirements and assisted in testing early development samples. They probably have an exclusive agreement in some form to sell the product. That is their contribution, and in that sense they are a co-developer, but they didn't do all the hard design work. Proof of this is the many references to LuxPower in the draft GSL user's manual that I pointed out before. If GSL is the manufacturer would they have written the manual with LuxPower all over the inside? Would there be two manuals - one from LuxPower that has no reference to GSL in it, and another nearly identical manual from GSL, that still references LuxPower and hasn't been released? I hope now we can stop debating who the designer of this inverter is. Its not Deye, Huayu, Megarevo or GSL. But from what I have been able to gather, GSL is the exclusive distributor of this model. Its basically the same relationship between SolArk and Deye.
Now for an update, I have been told by GSL that the UL certificate has been issued at this point. They reference this on an unlinked webpage they sent to me, but the text of the certificates they mention is too small to read. There is a visible reference to an ACM certificate though. I don't know if this is a certificate for their battery systems or for this inverter. The certificate number is 22ACM16040Q if anyone wants to investigate it. I have requested information from the ACM but haven't received anything back yet. You can request information about it at acmcert.com. I am trying to get an image of the UL certificate as well like I did for their other models. They have been selling the inverter in limited quantities, and as I explained before are ramping up production each month. The models they are selling are currently in the LuxPower color scheme without the LuxPower logo. This will probably change to match their screen shots before they do a public announcement. I am guessing that is in October. They have sold several hundred units at this point.
I will be very interested to hear how
@Hrschk purchase goes. It will be good to get real hands on the inverter and perspective on its features. By the way, how did you get it shipped in a week?