In the Alpha and Beta Quadrants, polaric energy research was investigated, but the destruction of a Romulan research station on Chaltok IV by a polaric ion detonation led to the Polaric Test Ban Treaty of 2268. This agreement effectively halted and prohibited all polaric ion research in the Alpha and Beta Quadrant. One planet in the Delta Quadrant, encountered by the USS Voyager in 2371 of an alternate timeline, was found to be using polaric energy as a planetwide power source. The culture was pre-warp, so contact was not initiated. (VOY: "Time and Again")