CARSON CITY, Nev. (AP) — Calling it one of the most important pieces of legislation in Nevada history, Gov. Brian Sandoval signed into law an unprecedented package of incentives to seal a deal to bring Tesla Motors’ $5 billion battery factory to the Silver State.

The “gigafactory” is expected to bring more than 20,000 jobs and $100 billion to Nevada’s economy over the next 20 years. It will be the biggest lithium battery factory in the world and is critical to the electric car-maker’s plans to begin mass marketing a more affordable line of the vehicles within three years.