When I sent them a flick bill here was their (quite reasonable) reply.
We only guarantee savings based on a plan which has comparable conditions to Electric Kiwi. This means we don’t calculate savings based on plans with special conditions, such as dual fuel and/or bundled discounts.
Flick customers pay a varying rate for electricity which cannot be determined in advance. Some weeks their bills will be higher than others even if the amount of electricity used is the same. This means we can’t do a direct comparison with our simple, single rate plans where you’re never surprised by your bill!
Don’t worry we’ll still guarantee your savings! We’ll simply use recent prices from the biggest power company in your area to track your savings.
Thanks, Tim - yeah, that's an understandable position.
My change-over to EK finally came through on Wednesday afternoon. In terms of the free hour of power - I understand the ability to change for a particular day up until midnight that night, but it can still be a bit of guess work as to which is the most advantageous hour to select given the delay in being able to view the data. I'm assuming, based on Flick data, that the first hour of running our heatpump in the morning will draw the biggest load so I will default it to this period.
After seeing your power usage pattern after a few days or weeks you can find the best default off peak hour & then see what other power consumption can easily be moved to that time slot to optimise savings. This might be nearly as effective as trying to change your free off peak on a daiuly basis to match that days power usage. Sometimes the simplest option is the best option.