The Orbanian Naquadah reactor is a powerful energy producing unit developed by the Orbanians.
The Orbanian Naquadah generator was developed over the course of ten years by a Urrone named of Merrin. This generator was an advanced reactor unit that produced huge amounts of clean energy from a small amount of naquadah. (SG1: "Learning Curve")
In 1999 the Orbanians loaned one of their generators to the Tau'ri as they were developing their own prototype. By 2005 the Tau'ri had developed three different types of portable naquadah generators, as well as several larger ones for use on their ships. At this point they most likely surpassed the energy produced by the original Orbanian device. (SGA: "The Siege, Part 2")