1. (2) SMA 7.6kW inverters can support up to ~24kWdc of solar*; Check out the data sheet for the inverters. Each has 3 independent MPPT channels that can support 10A of power and 18A short circuit. You would probably need different panels with lower voltage and higher amperage to realize ~24kW or run parallel strings on a single MPP channel which I would advise against. One of my projects is 22.77kW on (2) 7.6kW SMA inverters. It's been doing great for over a year.
2. Yes; Each inverter is completely independent. Each MPPT channel is also independent which is why I think 1 String per Channel is ideal. With the panels you've selected you're somewhat limited since you can't have strings longer than ~8? This would accommodate ~16kW but you would use all 6 channels and have limited ability to expand in the future.
The cost and reliability components of the new SMA inverters is the biggest selling point IMO. Instead of ~$60/panel for optimizers it's <$30/panel for a rapid shut down device. If the white paper published by SMA is correct your annual production is also higher without the losses from module level electronics. Cheaper, more reliable AND more efficient.
2. Yes; Each inverter is completely independent. Each MPPT channel is also independent which is why I think 1 String per Channel is ideal. With the panels you've selected you're somewhat limited since you can't have strings longer than ~8? This would accommodate ~16kW but you would use all 6 channels and have limited ability to expand in the future.
The cost and reliability components of the new SMA inverters is the biggest selling point IMO. Instead of ~$60/panel for optimizers it's <$30/panel for a rapid shut down device. If the white paper published by SMA is correct your annual production is also higher without the losses from module level electronics. Cheaper, more reliable AND more efficient.
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