having read that I'd still love to kill off the power bills... I guess if you had a large battery bank that would make it worthwhile during the day??? --- Brian?
Sorry for the late reply Bird, I've been holidaying
Large battery banks are too expensive and the ROI is bad.
If you can use the power during the day, then yes, definitely worth it, bit if not no.
I accept the argument from Symon re hot water timer etc, but for most people this is not the case.
In Sydney electric HWS do not meet the Basix ratings (Yes I accept circumstance, exceptions etc etc, but on a whole they don't meet.)
Also if you put the timer on between 12 and 4 and on that day you have clouds or rain etc, you pay peak price which pretty much burns a hole in your wallet!!!
Every circumstance is unique, but generally if you ain't using it, you're wasting it.
Pools, tanks, irrigators, kids at home, work from home, high usage, etc etc, then yes VERY worth it. Literally "free" after the upfront cost.
Cheers]
Brian