When detonated, these EMP grenades generate a burst of electromagnetic radiation that can produce damaging currents. The effects are devastating to power-armored opponents, whose Visor technology is temporarily disabled by these bursts. The interference incurred from EMP grenades decreases the farther one is from the detonation, making them ineffective against agile foes or in close combat.
These grenades are still in the experimental stages during Echoes and used primarily by Ing-possessed Dark Pirate Commandos who steal them from Space Pirates. By the events of Corruption, these grenades were basic armaments for all Pirate Troopers.
- "The Ing prize the few Pirate Commandos they manage to take alive. Only Hunter Ing are allowed to possess the Commandos, and the competition for that right is fierce among them. The Hunter Ing ability to phase out of local timespace carries over to the Dark Pirate Commando. They will fire bursts of dark matter at enemies, along with experimental EMP grenades stolen from the Space Pirates." —Metroid Prime 2: Echoes Logbook "Dark Pirate Commando" (Metroid Prime 2: Echoes)
- "The Space Pirate military forces continue to use Phazon, including a new Phazon enhancement system. Basic armament includes an assault rifle and energy scythe, both powered by Phazon. EMP grenades are often employed against power-armored foes. A new Dash Jet system provides increased mobility." —Metroid Prime 3: Corruption Logbook "Pirate Trooper" (Metroid Prime 3: Corruption)