update with puzzling numbers...

[maverick]

got my CSV installed along with my 18-12 GPM zones/77 heads sprinkler system.
I run sprinklers for 4.5 hours each night. first month (Aug) they ran for 15 days.
they ran for 30 days the month of Sep. and the bill was $46 less than the month before.
they ran for 30 days the month of Oct. and the bill was $4 less than the month before.
they ran for 30 days the month of Nov. and the bill was $29 less than the month before.
anyone able to explain these numbers to me? 

Frank

[Cary Austin]

Well eliminating a lot of cycling can decrease the electric bill, but I would not have thought it by that much.  Have you had a change in electric rates?  And do they really come read the meter every month and not just average and guess?

[maverick]

no change in rate, satellite reading.
the bill only started coming down after I installed the CSV. it was in conjunction with the sprinkler system.
I had a...$46 less...bill in Sept. and only ran the sprinklers 15 days the month before...