Location
Tocantins River, sub-basin of the Tocantins, in the Amazon basin.
Distance from the mouth of the river: 855 km
Municipality on the right bank: Estreito (MA)
Municipalities on the left bank: Aguiarnópolis (TO) and Palmeiras do Tocantins (TO)
Start of the building work: February 15,2007
Current stage of the work: Phase 1 ongoing (excavation and earth-moving works for constructing the coffer-dams).

Reservoir
Length: 260.23 km
Capacity: 5,400 x 10 m³
N.A.upstream: 156 m
N.A. downstream: 134 m
Flooded area: 400 km²
Working life: more than 100 years
Municipalities with areas affected by the reservoir and the power station: Estreito and Carolina (MA),Aguiarnópolis, Babaçulândia, Barra do Ouro, Darcinópolis, Filadélfia, Goiatins, Itapiratins, Palmeirante, Palmeiras do Tocantins, Tupirantins (TO)

Dam
Type of structure / material: earth / junction
Total length of the crest: 848 m
Maximum height: 40 m
Rolled concrete, 480m long and with a maximum height of 70m

Overflow system
Type: surface spillway
Project outflow: 64,990 m³/sec
Total length of the sill: 402.50 m
Number of spans: 16
Sluices gates: segment type
Width of the sluices: 20 m
Height of the sluices: 21 m

Adduction system
Intake channel: gravity type
Sluice gates: coffer-dam type
Width of the sluices: 7.70 m
Height of the sluices: 16.30 m

Energy
Output of the station: 1,087 MW
Guaranteed energy: 584.9 MW, average
Maximum gross drop: 22 m