Hi guys, I recently got my 11.8 Kw system online with 2 Powerwalls and after finally seeing it in action I have some questions. My house will come off the grid at about 7am or so. The solar will then proceed to run the house (with A/C cycling because I live in Arizona) and charge the Powerwalls and have them fully charged by, let's say...3pm. Then it will start sending power back to the grid until the sun gets low enough to alternate between draining the Powerwall slightly when A/C is on, to recharging Powerwall when A/C cuts out. Now it's 8pm when my electricity gets cheaper and my Tesla starts to charge. With car charging and A/C on, my house is drawing almost 17Kw. The Powerwalls are completely drained by 9-9:30pm! This is if I don't set a percentage to keep for backup. Is this how it's supposed to be right now? Obviously winter will make a big difference when the A/C isn't running but I just assumed these batteries would last longer than this. Can anyone let me know how they run their setup optimally (When to charge car, how much backup percentage to use, etc?)
Chris
Chris