Is Synergy's EV Home Plan actually a good deal, or a clever trap
The overnight rate looks great in the ad. What the ad does not show you is what happens to the rest of your daytime usage. Here is the honest comparison.
Synergy's EV specific plans get a lot of airtime, and for good reason: the overnight rate is the cheapest legitimate electricity you can buy in Perth. The catch is that switching plans changes every tariff in your house, not just the one going to the car.
What actually changes when you switch
Standard A1 residential tariff is a flat rate around 32c per kilowatt hour, all day. The EV Add On splits the day into peak, off peak and super off peak. Super off peak (11pm to 7am) drops to about 8c. Peak (3pm to 9pm) climbs to about 55c.
That peak block is the problem. It lines up exactly with when the kids come home, the aircon kicks in, the oven goes on, and the hot water reheats. If your house is not already automated to shift those loads, the extra peak cost can eat most of the overnight saving.
The two households where it obviously wins
- You have solar big enough to cover 3pm to 6pm on most days (6.6kW plus).
- You have a smart charger that can be scheduled to charge only between 11pm and 7am, and you charge at least three nights a week.
- You have a heat pump hot water system on a timer.
- You are home enough to actually shift dishwasher, dryer, pool pump into off peak.
The trick most people miss
A Zappi or Wattpilot lets you double dip. During the day it burns your surplus solar for free. At night, if the car still needs juice, it can be told to only pull power during the 8c window. That combination is what makes the EV plan actually worth it.
If you can't run that automation, the flat A1 tariff is usually the safer choice.
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