Madeira scheme – main characteristics

Jirau Santo Antônio
Main dam
Type: Earth and rockfill
Crest length 1,150 m 990 m
Auxiliary Dam 575 m (rolled concrete) 200 (earth)
Spillway
Maximum discharge 82,600 m3/s 84,000 m3/s
Number of spans 21 21
Powerhouse length 972.4 m 994.4 m
Nominal water head 15.2 m 13.9 m
Operational water level
Maximum 90.00 m 70.0 m
Minimum 82.50 m 70.0 m
Turbine
Type: Bulb type turbine
Nominal unit power 75MW 71.6MW
Number of units 44 44
Nominal installed power 3,300MW 3,150MW
Local average generated energy 1,908 MW 2,050 MW
Average generated energy/
installed power 0.58 0.65