The precise number for the "design" capacity of the assembly line is 83 cars per day according to Gilbert Passin, Tesla Motors Manufacturing VP (
http://www.edmunds.com/autoobserver-archive/2011/10/tesla-wows-with-model-s-rides-factory-tour.html). The weekly (5 working days) capacity is then 415 cars. Then two shift operation would yield 830 cars per week.
There was a discussion at the end of the Q3 2013 call on how Tesla would approach task of producing 80-100K cars/year (40-50K Model S and 40-50K Model X). I was surprised to hear Elon mentioning that existing line would not be able to produce in such numbers.
Up to the time when I heard Elon state this my assumption was that scaling from 83 cars per day in three shifts would add up to 249 cars/day, and then assuming 48 weeks, 7 days per week operation would result in total production of more than 83K cars.
It seems, however, that current internal thinking does not include 3 shift operation, and Elon during the call indicated that some reconfiguration of the assembly line would be required to scale production up to these levels.
The complete exchange betwee Elon and Patrick Archambault of Goldman Sachs:
Patrick Archambault -
Goldman Sachs
Got you. If I can, just one more just on, how you are going to configure your manufacturing sort of going into the end of this year? Does your current line have flexibility or will have flexibility to build Model Ss and Xs going through the same line or are you going to have to sort to build a parallel one.
Ultimately, I think the original expectations you put out was 40 to 50 global units of demand for S. Clearly, that would probably at some point the setup you have now but just kind of wondering when that additional capacity would go in and how it might be configured?
Elon Musk -
Chairman of the Board, Chief Executive Officer, Product Architect
We have a game plan on that front because, obviously, if we are doing 40 or 50 in Model S volume, if Model X turns out to have a comparable demand and we are on the order of 100,000 units then clearly our current production line is not going to do the trick. So we are going to need something else and we are looking at reconfiguring a part of the factory, maybe using one of the moving production lines that's still there from the NUMMI days but I feel pretty confident. I mean it's not going to be any, the production of vehicle is not going to be constraint. That's not a limiting factor. No doubt we have got some sort of huge capital, training thing that's going to need to happen. I think we have got a handle on how to get there.