I am looking for a minimum 10Kw grid tie wind inverter system. The best I can find now is stacking two power one 6 Kw Auroras but there have to be other options. I looked at SMA's windy boy but the cost difference is little. I will be using a 10kw clean energy technology generator in a newly designed cylindrical HWAT lift based system. UL certification is preferred but may not be required at this point. Anybody know of any others. Offshore or not.