I've done complete 2kw & 3kw outback residential systems and participated on a 6kw grid tie project.
Can provide project drawings.
I live in a small (.5kw) solar home.
I understand pv and battery arrays, controllers, inverters and ac/dc wiring.
I am not a licensed electrician.
AutoCAD is my strong card.
Bid is TBD per your detailed rquirements.
Regards, Eric Marantz.