Wind & Sun Grid Tie, Now Want to add Battery Backup
I currently have a 5.1kw Solar grid tie system (SMA SB5000US) and am in the middle of installing a 2.5kw A.R.E. grid tie Wind Turbine (SMA WB3000US). I am curently exporting 4-20 kwh/day to the grid. I would like to now capture the exported power and save to batteries for use at night since my current power provider does not buy it back. I would also like to be able to generate power with the Solar & Wind as a off grid system if required (trick GT to produce power if grid is down for an extended period of time using a transfer switch and other devices as required?). If tricking the GT inverters to work off grid, how would one deal with the problem of making more power than use. How could I charge the batteries? Since I am working with limited funds, 2 or more SMA Sunny Islands are totally out of the picture for a 240 Volt Split phase system. What would charge the batteries and how would a person manage the power? Buyers remourse on direct GT vs. battery GT.
19.76kw Solar/GT Enphase IQ7+ MicroInverters
5.40kw Solar/GT ABB/Aurora 300 MicroInverters (AC coupled to Schneider/Xantrex XW6048 output)6.00kw Solar/Hybrid Xantrex XW6048 Inverter w/2 strings Trojan L-16E-AC Batteries (48VDC)
18kw Kohler Propane Generator
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