Yesterday I became the proud owner of a 90D.
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I have a background in electrical engineering, so I and a certified electrician friend installed the NEMA 14-50 outlet in my garage. I am also a techno-geek-nerd, and I knew I'd want to track the power used by the car, so I bought a nice KWH meter from EKM that tracks many parameters, and best of all, can upload them to the cloud. Here's the outlet - the meter is at the top:
Forgive the beat up wall, but note the twisted pair of wires coming out of the meter box toward the left. That is an RS-485 line that goes to an EKM "PUSH" box, which sends the data up to the cloud via my home Wifi (that's the Netgear box in the pic below).
From there, I can monitor my power usage via any browser. The site is a bit buggy and I am still learning it, but it's basically functional.
I got the car home at around 5:30 pm, and sat and played with a few things. It wasn't trying to charge, but it was replenishing what I used.
At about 9:30 pm, I sat at my desk and told it to charge via the Tesla app on my iPhone
, so that I could watch it on the graph on my PC
in real time. Cool.
At 10 pm I played a little more. At 1 am it started a scheduled charge, which didn't last long - ended around 1:20 am.
For this screen grab, I hovered the mouse over Amps Line 1 at the 1 am position, and you can see that the L1 current was 40 amps.
There are tons of other bits of data available, but for now, these are the ones that interest me.
I'll apply for Time of Use metering as soon as the car is registered; after that, I will pay 4 or 5 cents per KWH (depending on which exact plan I choose) for off-hours consumption. My daytime consumption should cap out at around 10.5 cents per KWH at peak times, because I believe I have sufficient solar capacity to not need to pay NV Energy. We'll see.
- Mike R.
[SUB]
I have a background in electrical engineering, so I and a certified electrician friend installed the NEMA 14-50 outlet in my garage. I am also a techno-geek-nerd, and I knew I'd want to track the power used by the car, so I bought a nice KWH meter from EKM that tracks many parameters, and best of all, can upload them to the cloud. Here's the outlet - the meter is at the top:
Forgive the beat up wall, but note the twisted pair of wires coming out of the meter box toward the left. That is an RS-485 line that goes to an EKM "PUSH" box, which sends the data up to the cloud via my home Wifi (that's the Netgear box in the pic below).
From there, I can monitor my power usage via any browser. The site is a bit buggy and I am still learning it, but it's basically functional.
I got the car home at around 5:30 pm, and sat and played with a few things. It wasn't trying to charge, but it was replenishing what I used.
At about 9:30 pm, I sat at my desk and told it to charge via the Tesla app on my iPhone
, so that I could watch it on the graph on my PC
in real time. Cool.
At 10 pm I played a little more. At 1 am it started a scheduled charge, which didn't last long - ended around 1:20 am.
For this screen grab, I hovered the mouse over Amps Line 1 at the 1 am position, and you can see that the L1 current was 40 amps.
There are tons of other bits of data available, but for now, these are the ones that interest me.
I'll apply for Time of Use metering as soon as the car is registered; after that, I will pay 4 or 5 cents per KWH (depending on which exact plan I choose) for off-hours consumption. My daytime consumption should cap out at around 10.5 cents per KWH at peak times, because I believe I have sufficient solar capacity to not need to pay NV Energy. We'll see.
- Mike R.
