(rates are/will be tiered
so that it will be cheaper at curtain times of the day).

Yeah, that was the pitch given by the politicians, it sounded pie in the
sky, and in this area has proven to be so. Yes, rates are tiered, and some
times they are cheaper than other times, but never cheaper than they were
under the old flat rate. Possibly the midnight to 6:00 am may get close to
the old all day rate, but watch out for the supper hour rate, you may be
tempted to shut all power off at that time.