mattleonard
New Member
I have an existing 4kW residential rooftop PV system - with a SMA Sunny Boy 4000TL inverter, grid-tied. California, fully permitted.
I've got experience/understanding in off-grid solar, and am building a semi-portable server-rack rig (in a cargo trailer) ~20kWh. Currently debating EG4/SOK batteries, and likely ~6-8 kW inverter tbd.
For the 90% of days where the trailer is parked in my driveway - I'm wondering what my options are to roll the battery rack into my garage and tie into my home PV system (via an Anderson plug or similar?) - more for peak load shaving than outages. Do I need a AT switch and/or Sunny Island alongside the Sunny Boy? Or would replacing the inverter entirely with a EG4 or hybrid inverter (that communicates easily with the batteries) make more sense? (the SMA is ~9 years old). I don't know anything on the on-grid/permitting side of things - but would like to do this by the book.
Appreciate any guidance - especially as I look to purchase batteries soon, and want to make sure I am future-proofed so I could roll them into a grid-tie usage.
I've got experience/understanding in off-grid solar, and am building a semi-portable server-rack rig (in a cargo trailer) ~20kWh. Currently debating EG4/SOK batteries, and likely ~6-8 kW inverter tbd.
For the 90% of days where the trailer is parked in my driveway - I'm wondering what my options are to roll the battery rack into my garage and tie into my home PV system (via an Anderson plug or similar?) - more for peak load shaving than outages. Do I need a AT switch and/or Sunny Island alongside the Sunny Boy? Or would replacing the inverter entirely with a EG4 or hybrid inverter (that communicates easily with the batteries) make more sense? (the SMA is ~9 years old). I don't know anything on the on-grid/permitting side of things - but would like to do this by the book.
Appreciate any guidance - especially as I look to purchase batteries soon, and want to make sure I am future-proofed so I could roll them into a grid-tie usage.
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