Located in São João da Barra, (RJ), the GNA I is operating since September 2021.

GNA I is composed of 3 gas turbines and 1 steam turbine that, together, are responsible for generating 1.3 GW in combined cycle, which contributes to the increased efficiency in energy generation.  

GNA I will be connected to the SIN - National Interconnected System - through a 345 kV Transmission Line of approximately 52 km in Campos dos Goytacazes’ substation.

Learn more about other projects GNA thermoelectric complex:



1.338 MW

Installed capacity


start of commercial operation 

23 years


5,5 MM m3/day

Gas Consumption