Panasonic so far only invested a few million USD in the Gigafactory (GF). In any case, it won't be $3 billion (Tesla once intended to invest $2 billion on its own until 2020) in total
Why the $3 billion? The cost of the factory is *up* to $5 billion, with nearly $1 billion in tax breaks. So $5 billion, minus $1 billion, minus $2 billion, leaves $2 billion total for Panasonic & partners for all 5 phases.
Even this article says 30-40% of the $5 billion. That's $2 billion tops, assuming both the highest cost $5 billion and the highest share of 40%. At the lowest, it's 30% of $4 billion or $1.2 billion.
I can only see one result: A massive capital raise with new equity soon or very soon - because the majority of the $2 billion raised in 2014 (convertible bond) weren't used on the GF so far and will be burned within six months.
Of course you would see it that way.
Tesla Gigafactory phase 1 is roughly 20% of the plant. Assuming that first part takes 25% of the total cost to start up due to the grounds prep and other work, that's $1.25 billion of the high $5 billion number. Tesla is likely paying $500 million of that, and Panasonic is paying $500 million, again, using the highest numbers. Panasonic's investments in the battery plant is well known sussed out, telegraphed in their own financial reporting and can only be done in bulk when the shell is mostly done. The shell isn't mostly done yet.
Assuming that Tesla's portion of the Gigafactory phase 1 is done by the end of 2015, that's $500-$180 = $320 million over the course of the 2nd half of the year, or $160 million a quarter. But that's using the highest number. It could be as low as $320 million for the phase 1, which is then only $140 million for the 2nd half of 2015, or $70 million a quarter.
Tesla is managing cash closely at this point... they obviously have all the numbers, they could choose to delay projects and other investments or whatever to make the cash work.
Tesla's up to $2 billion in investment will take the next 4-5 years. That's roughly $400 million a year, or $100 million a quarter.
Tesla Energy storage product launch means that the Gigafactory will start producing revenue in the first half of 2016, without needing to wait for the products to be incorporated into Model S, X, or 3. Tesla will be cash flow positive before the Gigafactory phase 1 is completed, assuming no new large capex spending.
Tesla makes a gross profit of over $200 million a quarter already. The Model X launch will likely end up nearly doubling that number on a run rate basis by the end of 2016. They could pay for the rest of the Gigafactory on increased revenues alone, with both the Model X and Tesla Energy products in 2016 and then Model 3 in 2017/2018.
I believe they will raise capital, however, as they won't be content on waiting for the revenues to pay for it. The demand for their products is too strong and they will want to move faster.