eml2
Member
After you change the mode to self-powered in the app, did you wait long enough for the change to propagate to your PW/Gateway? It can take up to an hour.
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What is your Powerwall 2 charging rate?
- Thread starter crazykushu
- Start date
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- Powerwall Tesla Energy
Parzival
Member
Mine are charging at 11kW right now, and I have never seen any charge restriction. I have also never seen them charge from the grid. I was told they will never do that (aside from a bug in an older software release that allowed it.)
It may be worth noting that I have not played with backup-only mode. My feeling is that keeping the Powerwalls charged to 100% all the time can't be good for them.
It may be worth noting that I have not played with backup-only mode. My feeling is that keeping the Powerwalls charged to 100% all the time can't be good for them.
Shygar
Member
They lose 1% a day if you don't charge them. I'm still waiting on PG&E to give the PTO so I'm stuck in backup mode with solar off.
Parzival
Member
Yes, but what I mean is, keeping them charged near 100% all the time is likely going to cause them to lose storage capacity faster than if you cycle them and keep them closer to the sweet spot of 50%. I'm sure Tesla has modeled this extensively, but they're not sharing it, even internally.
I got my PTO last Thursday, and I've been net exporting since, which is both nice and annoying because I won't get credit for exported energy for another month. The utility gets to sell it to my neighbors and I get nothing but the satisfaction of offsetting a small amount of dirty generation.
yes, that is what I've seen when first installed. 1.7 from the grid and solar charged it at 5.OK confirm depending of the mode it is 1.7kwh or 5 kwh
Shygar
Member
SoundDaTrumpet
Member
Nice to see you power your house, your house for tomorrow, and your city at the same time.
I get about 16kw peak from my panels. so as long as we get clear sky (which we often do) i have power to sapre. We only get $0.12 per kwh sent back and it costs us $0.32 per kwh to buy so the battery helps a lot.
Frankman60
Member
Wow, there is a pretty big range that people are reporting for the maximum PW charge rate. For the posters that are experiencing a charge rate of less than 5 kW per PW, did Tesla install your PWs or were the PWs installed by a non-Tesla contractor? I”m thinking that the limitation has to do with how the PWs were installed and I am going to assume that Tesla installers know what the charge rate should be and are most likely to install and configure the PWs properly.
I thought that installations without solar were limited to charging at 1.7kW per Powerwall.
Shygar
Member
It's 1.7kW per battery if you have it in backup only mode. It should charge and discharge at 5kW max per battery if you are in self power mode.
maybe there is a limit it will send to the powerwall, when the house is still using power.
Try discharging to a higher percent the day before, so it's still charging after 1pm, when you solar minus the home usage is more than 3.3kW.
Shygar
Member
Yes try setting it to something lower. I leave mine at 20% reserved and the rest for self powered.
TomDiego
Member
The way that I read your "Battery State" you appear to be maxing out at 10kW. It appears that you have the "Battery State" as an area rather than a line. You also have "Solar Generation" as a line instead of an area. My "Battery State" line shows it maxing out at 10kW, same as yours. I did my PVOutput setup based on the instructions on the Mike's Gear website: Monitoring Tesla’s Powerwall2 on PVOutput.org. This is how he set up the parameters. With this parameter setup it looks a lot like the Tesla app but with the added Battery State line:
This is what my output looks like:
