Another tidbit, the $5B price tag is $1B for the building and $4B for equipment. Also another $5B in scheduled equipment replacement over next 10 years.
Possible implications:
1) Tesla has enough capital in hand to build the complete factory and furnish more than 25% of the equipment. IIRC, Panasonic will kick in another $1B, or 25% of the equipment cost.
2) Tesla will burn through $500M to $1B in equipment per year. At 50GWh/yr, that is an equipment cost of $10 to $20 per kWh.
3) Labor cost at $50k/yr/head x 6500 head is $325M/yr, implying labor cost of about $6.5 per kWh.
4) Energy costs at net zero could imply $0 per kWh.
5) If material costs are under $83.5 per kWh, then total cost of materials, equipment, labor and energy is between $100 and $110 per kWh.
6) NV tax benefit is about $1.25 over 20 years, say $62.5M per year, a savings of $1.25 per kWh.
So it looks like Tesla may have a path to $110 per kWh, and Nevada tax breaks are not decisive for getting there, reducing the after tax cost by only 1%.
Moreover, Tesla and Panasonic have the capital to furnish 50% of the initial equipment. Another $2B may be required. But if Tesla is able to generate say $200 revenue per kWh then there could be about $100 per kWh net cash flow, which is about $2.5B net cash year operating at 50%. In other words, half a Gigafactory could finance it's own completion from its own cash flow within the time it takes to ramp up production. There may be no need for more capital to be raised for this factory.