[vijay_nair]

I'd buy Tesla Powerwalls¹ and charge 'em up. One of them can store upto 13.5 kWh of energy and going by your comment below (190 kWh/30 days = 6.3 kWh/day, which seems in line with "I have an extra KW of power generation for ~8 hours" for peak days), it seems two of them costing $14k as per their calculator can handle 4 days worth of surplus.

Not sure if the economics would work out in your favor² but I personally consider going off-the-grid worth the cost.

¹https://www.tesla.com/powerwall

²subsidies: https://www.tesla.com/support/energy/powerwall/learn/incenti... (could potentially knock off 50% of the cost if you qualify)

[LinuxBender]

For some time, Tesla were not selling the power walls to people that were off-grid or unwilling to put power back into the grid. Is this no longer their policy?

background: this is second hand knowledge based on watching hundreds of videos people have made, documenting their experience and all the steps to go off grid, so this could be outdated. Learning every facet of this is one of my hobbies.

[traverseda]

I'm paying about $2200 CAD for 4.8KW hours of lifepo4 batteries, after taxes and charge controllers. I'll be putting that to the test, but even so I'd rather have more solar than more batteries most of the time.

I don't need any large AC inverters, so a big part of the appeal of a power wall is lost on my. Also I'd rather something with user-serviceable parts, as for me at least that goes hand-in-hand with going off grid.