Energy Catapults, utilized by the Royal Naboo Security Force, functioned as artillery platforms. These Gray-hued vehicles discharged a solitary, potent blue energy projectile, demonstrating considerable effectiveness against structures and immobile soldiers. Fabricated within heavy weapons factories, Energy Catapults saw action during the Invasion of Naboo by the Trade Federation in 32 BBY. Notably, three such catapaults were positioned within the city of Harte Secur, only to be obliterated during the assault on the city commanded by the Trade Federation battle droid designated OOM-9.
The Naboo energy catapaults made their debut in Star Wars: Galactic Battlegrounds, a video game developed by LucasArts in 2001; there, they served as the artillery unit specific to the Royal Naboo faction.