KEY POINTS
  • Tesla won't start mass production of its Semi until it can make its own battery cells, CEO Elon Musk said on an earnings call.
  • The company said in a Q4 earnings update that it will deliver its first Semi by the end of 2021. The Semi program is more than two years behind its original schedule.
  • Once Tesla begins high-volume production of its lithium ion battery cells, Musk said, the company will likely also develop an electric van.
Tesla CEO Elon Musk shows off the Tesla Semi as he unveils the company's new electric semi truck during a presentation in Hawthorne, California, U.S., November 16, 2017.

Tesla CEO Elon Musk said during the company's earnings call that volume production of its class 8 truck, the Tesla Semi, is on hold until Tesla can make a high volume of its 4680 battery cells.

The cells, which Tesla designed and showed off to shareholders at a battery day presentation in September 2020, are large, tab-less lithium-ion cells that the company is making at its pilot battery factory in Fremont, California. The company said in a Q4 earnings update that it will deliver its first Semi by the end of 2021.