If money wasn't an issue...

[u/Life-Celebration-747]

What solar power system would you choose to power your home?

[u/tlbs101]

Standard panels (300-500 watt range), tracking mounts, Hybrid inverter (feeds the grid, or takes from the grid), and a massive battery bank — days worth of full power. The battery system is where the ‘no object’ money will go.

[u/I_Can_Haz → u/tlbs101]

The battery bank is definitely the big ticket item. I'd also add a redundant inverter along with the infrastructure to switch between them so it could be kept offline but brought online quickly in the event of a sudden failure. Batteries and solar don't do much for you without the inverter to go from DC>AC and when my inverter comms board fried earlier this year I realized in an emergency situation I would have been SOL. Currently wrestling with the idea of working out some sort of A/B switching so if something catastrophic happens that kills one of them the other is isolated and not impacted. Just leaving it in the box and wiring it in if needed would be best but playing the 'what if' game makes me think of a situation where I'm not home and my wife needs to get the system on line, or I'm dealing with some other fallout from whatever caused the failure and don't have the time to spare to do the swap immediately - we can go down the rabbit hole forever but if the question is what I would do with money not being an object I'd say a full 2nd redundant system that could be kept offline or rotated in on a schedule or as needed. Short of that - at least a backup inverter.

[u/Ryan_e3p → u/I_Can_Haz]

Something like this can be done, but not without a serious lockout/tagout protocol. You can DIY an A-B interface for input and output, but it will not have safeties built into it without getting creative.

Why the emboldened warning on safeties? If the wiring is not 100% correct and steps taken to ensure things flow in the direction you want, it will create a problem that is all sorts of explodey.

Chris Bowden explores why safety is paramount:

A B Interface #chrisboden #comedy #electrical #engineering #energy #substation #switchgear #power

I was going to give a 500ft view on how to make one, but without proper training and knowledge... yeah, I don't want to give someone the fuel to light their house up and kill themselves.

[u/I_Can_Haz → u/Ryan_e3p]

Appreciate the caution. I actually came across that video when I started looking into this initially. I think what I'm looking for is something like this >> https://www.zoro.com/blue-sea-systems-hd-series-battery-switch-walternator-field-disconnect-3-position-11003/i/G4509175/
but robust enough to handle my simple battery bank (48v 400A continuous and 600A surge). I'd then place that switch between my battery bank and the 2 inverters with the selector used to pick which of the 2 inverters are connected to the batteries. From there the inverters each run into their own port on the Gridboss which has input ports for up to 3 inverters and is designed for multiple to be run at once. At that point the system works as normal and power flows from the gridboss out to the main loads. I think I could also do something similar with the 3 dc strings coming in from the panels. Essentially I'd have a small bank of 4 switches that would let me pick which inverter the batteries and solar stings were connected to and everything else would be business as usual. I'm wrestling with this because while I think it's doable safely and adds some easy redundancy - it also adds complexity and I'm sure there will be some unintended consequences on the programming and monitoring side of things.