A veteran that has been grandfathered in to receive two disabled veteran plates, is eligible to get them both free.
A veteran that has not been grandfathered in is eligible for only one free plate. Disabled veterans can have more than 2 disabled plates, but only one plate is free, unless they were part of the group that was grandfathered in to receive two free. Additional plates may be purchased at the regular fee.
Reference: Tenn. Code Ann. § 55-4-256.