Nothing in comparison to what states offered. Giving businesses subsidies to attract more employers isn't anything unique to California.
Basically $180 million to make this commercial and a couple scrapped demo stations:
Nobody likes taxes and if you can either avoid them or recoup them through subsidies it makes you "smart."
For the factories, maybe.
What about the rebate to car purchasers for many years, making California Tesla's biggest market? That is substantial.