Tweet
As described in another post, I am adding onto my system. I already have an Outback skybox as my main house inverter and it has about 6kw of panels, so at its limit. I'm adding a second array of about 5kw (maybe up to 8kw eventually) back on my shop roof and will locate this new inverter in the shop. I think it will be AC coupled to the skybox as you can pass through about 8kw via AC coupling. (I think I'm using the right terms and explanations). So I am looking for a lower cost inverter option for this second system.
I am not very familiar with GroWatt or their inverters. However they seem very reasonable priced for what you get. A 7.6Kw is about $1200 and it is a hybrid style so you can add batteries. It is also fully compliant with UL1741SA, CA Rule 21 & HECO. And has a 10 year warranty. The Skybox runs around $4200 now. I'm not sure why it is so expensive or if it's worth 3x more than these newer hybrids. Mine has been pretty much flawless so far, so maybe you get what you pay for on these things. I guess the secondary system won't be as critical so I can afford to take a chance..
Solis also has a 7.6kw that looks very similar. The Growatt is about $100 cheaper and 1% more effecient, and weighs about half as much. Not sure why, I'm sure somebody here knows. I tend to think things like this should be heavier but I'm sure that's not always the case.
To compare, the 7.0kw SMA sunny boy is about the same price as the Solis, also about the same weight and effeciency (60 lbs and 97.5%). It is not a hybrid inverter so no battery input. Not sure I need batteries on this system but someday if I ever go off grid it would be nice to have the extra space in teh shop to put extra batteries.
Any opinions on these?
Thanks!
I am not very familiar with GroWatt or their inverters. However they seem very reasonable priced for what you get. A 7.6Kw is about $1200 and it is a hybrid style so you can add batteries. It is also fully compliant with UL1741SA, CA Rule 21 & HECO. And has a 10 year warranty. The Skybox runs around $4200 now. I'm not sure why it is so expensive or if it's worth 3x more than these newer hybrids. Mine has been pretty much flawless so far, so maybe you get what you pay for on these things. I guess the secondary system won't be as critical so I can afford to take a chance..
Solis also has a 7.6kw that looks very similar. The Growatt is about $100 cheaper and 1% more effecient, and weighs about half as much. Not sure why, I'm sure somebody here knows. I tend to think things like this should be heavier but I'm sure that's not always the case.
To compare, the 7.0kw SMA sunny boy is about the same price as the Solis, also about the same weight and effeciency (60 lbs and 97.5%). It is not a hybrid inverter so no battery input. Not sure I need batteries on this system but someday if I ever go off grid it would be nice to have the extra space in teh shop to put extra batteries.
Any opinions on these?
Thanks!
Comment