Crews are hard at work preparing South Buffalo's SolarCity factory to employ thousands of Western New Yorkers. They installed 44 air handling units on the facility's rooftop Saturday morning. A special sky crane helicopter had to be brought in to aid in the construction. The company says the Riverbend site will be the largest solar panel factory in North America when its finished. The project has already brought in a 300 million dollar investment from Google and employed 400 area workers. SolarCity plans to hire another thousand workers early next year.