So, $76,700 per employee per year for the first six years... and then why not do the math for the 20 years after that?
Given Nevada’s tax system, the only place where these breaks could come is in property taxes and sales taxes:
http://taxfoundation.org/state-tax-climate/nevada
They’re not going to waive sales taxes, so probably what’s going to happen is that they’ll defer or waive property taxes on incomplete, non-operational factory buildings and property under construction until they get up and running and generating income.
So the choice for Nevada is between putting a $600 million a year set of brakes on a $5 billion decades-long project, or losing out to another state and continuing to levy a $0 a year worth of property tax on a bunch of vacant desert land.
A facility of this size will need supporting infrastructure; large water mains and sewers, roads and bridges for high weight limits,stormwater management (in Nevada?), special fire equipment...
All needed in the near-term.
And do not forget the interest on the bonds (tax free) to pay for all the improvements.