Content by wattmatters in November, 2025

Not sure if I can extract driving time from the data.

I noticed before I decided to buy my first EV (the MG4) that there wasn't a lot of long term consistently collated data on actual energy consumption and costs. Lots of people were posting cherry picked data in order to win some silly online argument they were having with a troll, so I decided...

It's mostly automated. A couple of minutes each month perhaps. No, not with an ICE car because I didn't have Home Assistant integrations automatically collecting the data for any of my previous vehicles, and not for petrol/diesel purchases either. With electricity I have data supplied by my...

If we travel and need to use highway DC fast chargers, then the cost is much much higher. Meanwhile a month of only charging from home is as cheap as chips. Cheaper actually. DC fast charging has made up 16% of the total charge energy but is 58% of the total cost.

October 2025 done and dusted. 10c per 100 km.

I just switched to Globird's Zero Hero plan. It has a $2.035/day supply fee (we have controlled load so often a bit higher than for those without CL). 11AM - 2PM being free energy, the other tariffs don't matter. There is a bonus $1/day if no imports 6-8 PM (< 0.06 kWh) which we do easily...