I have one of the 15KW Sigineer low frequency inverters that I'm thinking about selling. Its also brand new and still on the pallet and in the original box that it was shipped in. I'm not going to use it now because I am running a 12kw Growatt low frequency inverter and its doing everything I need it to do and then some. I need to get 1200.00 for mine if anyone is interested send me a message. Thanks