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  1. S

    Losses During Standby with PowerWalls

    Thanks, that is good to know. I expected better since Li-ion batteries are so much better than Pb-acid, etc. on that basis. I wondered if there were internal heaters to keep the batteries at temperature, but our climate here is so benign it doesn't seem like that would be an issue. So, the...
  2. S

    Losses During Standby with PowerWalls

    Pretty sure. I download the five-minute data every day and it shows zeroes for the delivery from the PWs. I was very surprised to see them going down by such a large amount (5% per day of 2 PWs is over 50W continuously). For example, I fully charged (to 100%) on 1/6 at about 15:00. They dropped...
  3. S

    Losses During Standby with PowerWalls

    I'm wondering what is a normal 24-hour loss rate for PowerWalls in Standby? Mine have been losing about 5% per day, and that seems excessive. I have a couple of Powerwalls on our house, with a 7.5kW PV system. We are in Oceanside, CA, so the weather is pretty mild, although we have been...
  4. S

    Recommended way to get hourly grid data?

    Please share your script that pulls data out of the Tesla system. I've been doing it by hand daily and it is very tedious.
  5. S

    Inconsistent Data from PowerWall Downloads Starting in August 2021

    Thanks for the replies, and the simple solution. I have to say I'm not impressed with their software developers if they can't figure out that when you look at a previous day's data (or download it), you would want to see (have) the entire day. I wish there were some way to get through to them...
  6. S

    Inconsistent Data from PowerWall Downloads Starting in August 2021

    I've had my PowerWalls (2) for almost two years now. Every day, I have downloaded the previous day's data using my phone to e-mail the CSV file to myself. This has worked fine until about a month ago, when I started getting data files that were incomplete. It seems to have happened about the...
  7. S

    Help with downloaded Powerwall 2 data

    I think your math is correct. The five-minute data is 1/12 of an hour (5/60), so kilowatts * 1/12 hr = kWh. I'm not sure of your issue with daily values. I noted that the five-minute PowerWall and grid energy values come in as +/- (depending on whether it is to or from) but the daily value are...
  8. S

    Living Room Light Goes On When PW Starts Charging

    Thanks to all. It was an older dimmer, and Decora (if that matters) so I just went ahead and replaced it with an on-off switch so the problem is taken care of... While I was at it, I also changed out another dimmer in the same room that was not giving problems but was the same vintage and...
  9. S

    Living Room Light Goes On When PW Starts Charging

    I've noticed an odd thing with my new PW (2, powered up this week). When the PW switches from powering overnight loads to being charged by my solar in the morning, one of the lights in our living room turns itself on. The light has an electronic dimmer switch. I'm thinking the PW sends some sort...
  10. S

    Measuring Advaced mode on 3 tier TOU plan

    The daily data has the information in 5-minute increments on the energy into/out of the PW. Charging is shown as negative, delivery is positive. I download the data daily and just pull out the + and - values to separate columns in Excel. But I'm doing it manually, and every day. Has anyone a...