40 kWH of storage and 9 kW of solar panels is all I need personally to live a 1st world lifestyle in the bay area mostly off-grid except for water and internet.
PNW is fraught, amazing during the Summer, but underpowered in Winter. The best solution is overprovisioning panels by a factor of 4 or so if the room is available. Did a place up there and it's hugely overproductive half the year, and just under break even in the dead of Winter.
From the Bay area or so and down across the country is ideal for solar, passing through a lot of red states that ought to know better. Fun fact though: Texas has the most windmills of any state by a huge margin.