BYD Co Ltd is eyeing a 30 percent share of the electric-bus market in North America after expanding its manufacturing facility in the United States.

The addition of a new wing to the existing facility in Lancaster, Los Angeles County, quadruples the floor space to nearly 138,000 square meters.

It will also mean the Chinese automaker will be able to produce 1,500 electric buses a year, the equivalent of 30 percent of the total market in North America.