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Because in CA, we get fleeced on anything to do with home construction, no matter how trivial.

I had a third party installer sell me a PowerWall, since Tesla was unwilling to do so unless I also bought my solar system from them. Tesla sells very few system configurations, and the only way they could get theirs to fit on my roof was to put it in shadow, so I wanted a better solar setup...

Oh, and to answer a previous question, yes, this is configurable with API's backing the configuration wizard, it looks fairly straightforward based on some request tracing, but that's no different from Tesla's logs from using the wizard.

I only tried this a few times, because I'm pretty sure that Tesla sees any config changes and doing them daily might be suspicious. Yes, if the PW is full, you will net-meter power back into PG&E from solar. Your app also doesn't show you power from the panels during this time, this is correct...

You can make it charge from the grid by changing it's settings, I tried it and it works, but it's by no means a clean answer. Put your powerwall into backup mode, then go into the configuration wizard, delete the solar array, and switch the solar solar CT's to "Site" or "None". Voila, it'll...

I just investigated battery storage to have some blackout resilience, and if you want to have backup power when the grid is down, the only two options right now seem to be the PowerWall and Sonnen. From what I could tell, the LG batteries could discharge during a blackout, but they could not...

This thread is brilliant! I think I could come up with something backed by a gasoline generator instead of an EV. You need a 24V battery to buffer, but generator charges the battery via charger, while inverter phase matches micro grid. If I wire this upstream of my PV ammeters, the PW will think...

I'm a new Powerwall 2 user, and I have a tiny solar system - only enough roof exposed to sun for 2.4kW, and partly shaded too. I wish I found this thread before getting the Powerwall! As it stands, it's sitting at the backup limit, and not charging at all. I guess that will change when the days...

There are four CTs visible in the settings, however, I think the phases on the solar circuit are swapped. The CT’s are oriented correctly, but read negative values. I inverted the values in the settings, but now it double counts my solar production. The grid CTs read consistently with the...

Yup, that was it! Thanks for the info. I moved one of the CT's to the other phase from the solar, and now everything works as expected. I also had to configure the CT's as measuring my solar array, not "site" as the thing was set to. Managed to verify that it works with the last rays of sunshine...

I'm down the road from you, in Mountain View. My whole house panel is backed up by one power wall, and I have a tiny 2.6kW solar system made up of 8 Enphase IQ7 inverters coupled with 325W panels. Not much south facing roof on my house, sadly. We must be using the two internal CT's, then...

There's a data cable from that clamp going to the power wall. I think it uses the i2c protocol.

Ok, thanks, so something is misconfigured. I have a CT clamp on one phase from the grid, and another CT clamp on one phase from the solar, but in the PowerWall, they're configured as Phase A and B of grid input in the powerwall itself. Sounds like the installer goofed up.

Hi All, I bought my first Tesla product recently, a Powerwall 2. I have a small solar system with 8 Enphase IQ7 microinverters. The Power Gateway doesn't see my solar system. I went through the setup wizard, didn't change anything from what the installer did, but the installer set it up as...

So, I've been tracking for many years, and you couldn't be more wrong about fluid. To give you examples of high temperature fluids - Motul RBF 600 or RBF 660, or ATE race fluid. These fluids are DOT4, since that's what my car requires, but have boiling points significantly higher than the DOT4...

Nice laps, Matt! I'm impressed with how you wrestled that heavy car around so quickly. Boy oh boy did I smell some serious brake while driving behind you, and seeing your car auto-brake for me was kind of amusing.

Four point harnesses? Scary stuff. In a collision, you can slide out from the harness through the bottom, it's called "submarining", and proceed to break your knees and femurs on the aluminum dash extrusion. It's fine for an HPDE track day, especially if that's the Scroth ASM harness, but too...

I love back of the envelope computations. First, let's make some assumptions about your 3 hour drive. Let's assume that it's high noon for the entire three hours and you are at the equator. Given these conditions, we can assume that sunlight delivers about 1.4kW/m2 of energy, so a two square...

One of this forum's members was nice enough to swap cars for a drive through some twisty mountain roads this morning, so I figured I'd write a little comparison of the two cars. I drive the Elise a lot, so this is coming from the perspective of an Elise owner. The motor in the Roadster is...

Wow, lucky driver. I don't know much about the Tesla, but in the Elise, any damage to the chassis totals the car, since it's not repairable. The chassis looks damaged (epoxied frame member is ripped apart). I wonder what the rest of the car looks like. In any case, lucky driver, glad to...

I did stop by the Tesla store in Menlo Park and the dealer was willing to let me test drive the car if I was serious about buying it, but I couldn't lie to him to get a test drive knowing full well that I wouldn't buy one. In any case, I realize this sounds like a risky proposition, I'd be...

Hi Guys, I've been a fan of Tesla since they announced the Roadster, and I almost bought one, but I decided that $110k+ a bit too much cash. I've never had the chance of riding in one or driving it, so I was wondering if anyone in the San Francisco Bay Area would like to trade a ride or...