You could save on your electricity costs by charging your EV during the Super Off Peak and Overnight time periods
At the moment my dad's house is doing 28c per unit flat. With this EV Add On it's supposed to save some money but is it really?
Do you have the EV add on, Yes or No?
I have a home battery so this is basically a no-brainer for me.
Every single hour where I am drawing from grid, the cost is cheaper than the original 28c.
And during peak period of 1500 - 2100, generally the home battery will supply the majority of the house’s need, so I don’t end up using the expensive electricity much.
Last but not least I can just charge the car freely during the 0900-1500 happy hours. The bonus is that I know my car’s source charging at this time will be the greener energy coming mostly from solar, which help making my car energy as green as possible.
Great thoughts, I will put them into an excel and see what the differences is after 2 weeks. Thanks many
I didnt know they had EV's in WA.. where do you charge it?
I didn’t know NSW needed GST top-ups… where's your pokies revenue
WA residents are too smart to have pokies except at one location to cater to the truly desperate.
I think its worth it. I have a pool (no heater) and an EV and no Solar or battery. I've been tracking since July when I switched and saved roughly 16% or average daily savings of 10%.
The only key changes I made was only charging not on peak, most of the time its at the overtime rate though. Other than that, no real energy changes.
Savings will depend on many other factors of course.
If you have high energy usage appliances/EV and you can use it during off peak or super off peak that would be most ideal.
You can also download the data from Synergy, it'll give you both daily or hourly energy usage and then compare it to anytime rates which is what I've done.
I am of the impression that you can only get the hourly energy usage if you already have a smart meter at your house, i.e. you are already on some sort of time-of-use tariff.
how much did you save in a space of 12 month compared to before?
Let me attempt to make it a bit more scientific to allow you some precise calculations.
First of all you kind of need some idea as to what your usage is especially the killer period of 1500 to 2100. Now if you don’t have a smart meter I don’t believe it’s something you can see on synergy website or bill directly, but you can try to do this manual reading when you get a chance: read your main meter manually at 1500 then another time at 2100, note the difference. Repeat the next day. Do it a few times and get an average. This will give you both the daily kWh, as well as the peak portion.
If you want to be more precise, do a few reading too for the transition points eg 2300, 0600 etc but obviously this timing is a bit more tricky so you might want to skip it - and they don’t matter as much.
If there is some behavioural change that you can implement, try to do them when you perform this observation. Eg try not to run your dishwasher, washing machine, dryer etc until after 2100. Or even better, during the super cheap period of 0900 to 1500.
Now also note that compared to the A1 plan, these are the differences:
0900-1500: -23c
1500-2100: +20c
2300-0600: -13c
0600-0900 and 2100-2300: -9c
The other parts of the equation is how many kWh you actually charge your EV each week, and how much you can actually do during the 0900-1500 super off peak. The real charging kWh need can be obtained from the Tesla app under the “charge stats” section. So try to do a bit of realistic estimation of how many kWh each week will come from the super off peak (where you save 23c each kWh), and how much you end up charging from second best rate 2300-0600 (where you save 13c per kWh).
Last but not least, a tiny but fixed factor is the connection fee. The A1 is 113.22c per day, EV add on is 126.07c per day. So it’s actually a bit more expensive.
When you have completed basic data collection above, here’s how to work it out.
Home usage
How many kWh falls into peak: *20c extra per kWh
How many kWh falls into various other periods: you probably have to guesstimate how much in each period and apply the saving per kWh
Car usage
How many kWh per week you manage to charge during 0900-1500: -23c per kWh
How many kWh per week you charge during 2300-0600: -13c per kWh
Supply charge: 13c extra per day.
Over each week tally up all the pluses and minuses to see if you come out ahead.