The TGP metal works include 386 gates of various kinds, 139 hoists of various kinds, 26 penstocks, all of which add up to about 256500 tons. The overall work quantity ranks the top among the world's hydraulic projects built or under construction.

The following indices are also the biggest in the world: the penstock's inner diameter of 12.4 m, the maximum height of ship lock miter gate of 38.25 m, and operating water head of 36.25 m, single gate's weight of 850 tons.