I am running in the 60%  area  for now and in the fall I will clock higher.

also remember  my summer power is 16.7 + say 2.3 for ac costs.  so 19 cents

my winter power is 12.7 - say 3 cents for free heat so  9.7 cents.

so OCT 1 my power bill is dropped 45- 50%  until June 1 next year.