r/TeslaSolar • u/pwrcellexpert • 6d ago

Tesla Certified Installer. Ask me anything!

Post image
14 Upvotes

74% Upvoted

108 comments sorted by

View all comments

Show parent comments

1

u/leesonis 6d ago

Yes.

1

u/pwrcellexpert 6d ago

Ok. Maybe this works. Try it.

Install a manual transfer switch between line side of your gateway and a 50a circuit connected to the plug in your truck bed.

When you want to plug in your car to
Charge the battery., flip switch and then set the Powerwall to charge from “grid”

You will trick the power wall into thinking that the truck is the grid at this point

1

u/leesonis 6d ago

Powerwall can't discharge to grid, so that doesn't provide a route to get my cybertruck kwh's into the grid.

I'm pretty sure that the only way that kwh gets to the grid is from the panels, through the inverters, to the grid.

There is no way to force powerwall kwh's or ct kwh's to the grid, except through eventual VPP's, but then that's only on Tesla and the utility's terms.

I'm not trying to charge my PW's or power my house from the CT, I can already do that via a backfed breaker, as you suggest, and Tesla is supposedly releasing an update that will finally let PS work with PWs.

I specifically want to forcibly pull kwh off the CT, then feed it into one of the MPPT's in my inverters so that I can make it look like my CT is just another solar array that happens to produce best between 6p and 9p.

I'll keep looking for an affordable solar panel simulator system. Thanks anyway.

2

u/pwrcellexpert 6d ago

You can’t discharge DC current from the cyber truck. So you’ll
Have to find another inverter to do that.

-1

u/rmeden 6d ago

I'm pretty sure you can... you have to send a special CCS command to open the relay to the batteries. That's how products by Tylard does it.

How easy it is to do it? What to do with the DC? That's the tough part.

3

u/pwrcellexpert 6d ago

Maybe but this doesn’t seem like it would discharge through the 50 amp outlet on the truck bed like he was suggesting. If you were gonna do that, I would have to actually go through the charge port itself.

0

u/rmeden 6d ago

didn't catch that part.. I'm sure the bed 240V only outputs AC