China's Tongwei Group Plans World's Biggest Solar-Cell Plant (5GW/yr)

[Festivito]

2. 2 million homes each year. 50 years to minimally finish the US.

150 Amp service * 120V = 18KW max pull. I use < 10% of capacity, call it 2KW meaning 2,500,000 homes.
But, I occasionally want to run everything at once, so I want ten times the energy drain meaning 250,000 homes.
But, can't get blood from a turnip and can't get power from a cloudy moonless 18-hour winter night, so, ...
In my 25% daylight times I'd want to quadruple that capture meaning 62,500 homes per year.
$1B in overhead for one year is 64K$, 10 years is 6.4K$, 20 years is 3.2K$ for being completely off grid at full power assuming some good storage of power at additional cost of course.

or,

A minimal 2K system per home means $400 in one year, $40 in ten, $20 overhead in 20 years.
125,000 houses in US. 50 years to complete with only one factory. China would have 6 times that.

Sorry, that is not 5GW-year, just 5GW. Just thinking out loud on a Monday morning. Nearing lunch time. Can think better soon.

[font color="white"]10MW/house/year (6-16, 11 Avg)
5GW = 500 houses/year
20 years = 10,000 houses
$1B -> $100,000 / house

Across 20 years quality thereby quantity will rise. Factory won't die just because of 20 years passes.
500 houses per year, $100,000 per house over 20 years