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I am having the same issue with the trunk on my Model 3 2018. Happening for a couple of months now at random. Any solutions that can be tried before being in to SC?

Thanks adspguy (and Wayne and dareed1). Attached is my data from the same day. I’m just south of Boston so our location is pretty close. Haven’t hit 60kWh with this setup. Seems the optimal system here would be to add another 3.8 inverter but they have refused to do so. And given the small...

A PO that is mutually agreed upon is a contract in my world (capital equipment). In fact, they are even one of our customers. Pretty certain if we didn't deliver everything on a PO they would not pay the full amount. Perhaps it was just a fat finger mistake on their end, but it does smell of...

This is what is on the SMART application. Very low estimate for annual production IMO. Not even close to the PVWatts estimates. Seems that no loss expected from shading according to this as well - assuming blank means 0%.

Thanks Wayne and dareeed1. Curious if any of you would push them for a credit due to the discrepancy between the system delivered/installed and what is listed on the PO.

I agree it matches this design, but not the PO which is why I want a price reduction. I'm not sure how to model the multiple arrays in PVWatts. Or if I am using all the right factors. Is this something you (or someone here) can help me with? My novice approach showed about 750kwh/year of losses...

Here you go!

Here is the plan I was sent. Not sure how to analyze the two arrays separately in PVWatts, but certainly seems there will be a drop in output with only one 7.6kWh inverter instead of 2 as is stated on the PO. The price sheet doesn't list the quantities, however. Looking for some advice on...

Yes, that's correct. They are trying to tell me I need to pay them the same price as what is on that PO despite only installing the one inverter.

How many 7.6 inverters should Tesla have installed?

I am in the same boat (12.75 panels + one 7.6 inverter & 3 PWs), but with one catch. The PO from Tesla clearly states two 7.6 inverters but only one was installed. Been a month since install here in MA just outside of Boston, and I haven’t paid yet. They keep pushing me to but I simply won’t...