I'm about a day away from starting up a new 15K installation and am curious about what the right configuration should be to achieve my goals (see below). Any thoughts from experienced Sol-Ark users is greatly appreciated.
GOALS
PRIMARY: Use as little grid power as possible, and use solar when available as source for topping up the batteries and running household electrical
SECONDARY: Have enough battery backup to power critical loads for 24 hours (typical critical load for 24 hours is approximately 10kW)
TERTIARY: Generate income/credit from utility by selling power back to the grid
MY SETUP:
GOALS
PRIMARY: Use as little grid power as possible, and use solar when available as source for topping up the batteries and running household electrical
SECONDARY: Have enough battery backup to power critical loads for 24 hours (typical critical load for 24 hours is approximately 10kW)
TERTIARY: Generate income/credit from utility by selling power back to the grid
MY SETUP:
- Sol-Ark 15K inverter
- 15kW of Signature Solar EG4 LL batteries (3 batteries in a cabinet, 48V, 300AH),
- Load-side AC coupled solar of 7.9kW connected to Sol-Ark thru a 100amp subpanel that is connected to the 200amp main breaker panel (diagram 4 in Sol-Ark manual). I cannot direct connect from panels to Sol-ark because the Fronius inverter is in a barn a long way from the main panel, so I have to AC couple as described
- Backup PTO (from tractor) generator connected to the Sol-Ark thru the GEN connection