if it works in germany, czech republic, poland which is higher latitude than 99.99999999% of USA or 80% of canada population then it will work even in USA too

if it works in germany, czech republic, poland which is higher latitude than 99.99999999% of USA or 80% of canada population then it will work even in USA too. Again read my first post, it is NOT about reaching 100% offgrid which is expensive, and nonsensical for most people it is about reaching 100% offgrid for 80 % of time and 10-99% offgrid 20 % of time. Which is so cheap in europe that youre generating totally free energy after 6-7 years PV system paid for itself.