I'd gotten a couple quotes for grid-tied solar installations recently.. and they were pretty outrageous @ over $5/watt installed (with no battery backup & no op

I'd gotten a couple quotes for grid-tied solar installations recently.. and they were pretty outrageous @ over $5/watt installed (with no battery backup & no option to stay on with the grid out). So now I'm in the process of putting together a 1.8kW solar system for the roof of a cargo trailer. Not the biggest solar setup, but I'm also not a huge consumer of power - this should offset a significant portion of my consumption in summer, and it's also expandable to ~2.7kWh (though I should've bought a 6th panel for that). I've paired the panels up with a 3kW hybrid inverter and a 5.1kWh LFE rackmount battery. Should do pretty well together, and like you said... I'll be able to keep the lights (+fridge/furnace) on if there's a power outage - a huge plus. Total cost for the main components and most of the necessary wire/hardware? ~$4000, before any tax credit.