At 7k in 2005 one might have gotten about 1200 watts of solar@5.50 per watt--but that price doesn't include a battery bank. I settled for 256 watts, which with charge controller ended up at $1700.
The bank I had in 2009 was 875 amp-hours with 50% usable. Cost was $1 per amp-hour. At the time approximately the same storage as a the original smaller Tesla Power Wall (5kwh). I went 5 years without a generator with this larger bank.
Then I went full time and chose to go back to a generator. What a mistake.
Over the time frame from 2000 to 2021, I spent 12,500.00 on generators, not counting maintenance, fuel or oil changes, nor a cage to store it.
Certainly prices are much lower today--but I wish I had bitten the bullet in 2005 and gone super size solar.