Tesla boosted its workforce to almost 10,200 employees last year from about 5,800 a year earlier. The company also hiked its administrative and research expenses.
Last month, Tesla said it plans on boosting its vehicle deliveries in 2015 by more than 70 percent (compared to 2014) to about 55,000 units. This estimate follows Tesla's highest-ever quarterly deliveries, which was set at 11,627 vehicles in the fourth quarter of 2014. In addition to the Model S sedan, Tesla will start selling the Model X SUV this year. The company says it has more than 10,000 Model S orders and 20,000 Model X reservations on the books.
Last September, Tesla announced that its planned Gigafactory would be built near Reno, Nevada. The company is expecting to ramp up battery production and bring down costs enough to deliver a $35,000 vehicle that has a single-charge range of 200 miles.