According to Bob F :

Some friends of mine claim they basically pay nothing for
their electricity. This is in NW Washington State. I believe
they said they paid about $16,000 for their system. They
are careful about their usage it seemed.

More than careful methinks. Going off-grid with solar electric
means that they have to be _extremely_ miserly with electric
power. Things like 12V lighting systems, propane powered fridges,
etc.

You can't go off grid if you're into standard consumer appliances.
--
Chris Lewis,

Age and Treachery will Triumph over Youth and Skill
It's not just anyone who gets a Starship Cruiser class named after them.