EMP grenades

EMP Grenades was an upgrade used by the Global Defense Initiative during the Third Tiberium War.

Overview
This upgrade gives Grenadier squads the "Fire EMP Grenades" ability, which causes them to toss EMP grenades at the target area. Similar to the Hallucinogenic grenade ability of Confessor cabals, each member tosses one grenade, allowing a larger area to be covered when the squad is at full strength. The EMP grenades disable all vehicles and structures in the blast radius for 10 seconds. The ability has a cooldown time of 30 seconds.

Despite the wording of the upgrade saying that "mechanical units" are disabled, the EMP grenades only affect vehicles and structures. Power armored infantry and Marked of Kane cyborgs are unaffected.

Behind the Scenes
The Steel Talons do not use EMP grenades, making them the only faction in Kane's Wrath not to have native EMP weaponry. In order to improve their counter options to epic units and make them more desirable in multiplayer, the unofficial 1.02+ patch gave them this upgrade in Release 12, available at the Command post but requiring the Tech center. This variant costs $1000 and takes 45 seconds to research.