Yes, in many states. In California the Clean Air Vehicle (CAV) decal is valid for 3 full years. Visit the California DMV website to apply for your HOV sticker.
Note: If you rely on the HOV lane for commuting, you may want to lease rather than purchase your EV since the decal lasts for 3 years. When it expires, you can lease a new EV and apply for a new decal. Visit your state’s department of motor vehicles (or equivalent) to learn more.