GM says it’s ready to start selling power adapters compatible with Tesla, more than a year after it announced plans to adopt the related charging standard.

Detroit automaker's U.S. customers will be able to buy GM-approved NACS DC adapter through vehicle brand's mobile apps.

To gain immediate access, owners of electric Chevy, Cadillac, and GMC vehicles will need to purchase “GM approved” Tesla adapters through each brand’s smartphone app for $225. Future GM vehicles will come with Tesla’s charging port natively installed.