I tried out that solar calculator.
It came back with 530 watts with 55 amp MPPT, 425ah lead acid batteries.
Used winter numbers with furnace at 20hrs per day, 0.5hrs microwave usage, etc
We have 4x 6v golf cart batteries (Duracell) and 2kw inverter. Batteries are a few years old, always connected to 4 stage charger/AC. Believe they are 215ah/each with 2 pairs in parallel (standard for 12v setup)
Likely will be adding a 24/7 camera and internet wifi backhaul link across the top and then down the mountainside to our house. So that will add a little more usage.
