Azura-Edo Independent Power Plant Environmental Impact ... - IFC

3.2.2 OCGT Plant Process
An OCGT power plant consists of a gas turbine and a generator. The gas
turbine comprises a compressor, combustion system and a power turbine.
The compressor draws in fresh air and raises the air pressure by compressing
it. Fuel is added to the compressed air in the combustion system and ignited.
The resulting expanding burning gases turn the power turbine which is
connected to the generator thereby creating electricity.
The Azura-Edo IPP will be constructed around four Frame E gas turbine
generators, operating in open cycle with a nominal output of 112.5 MW from
each unit, and a total capacity of the power station of approximately 450 MW.
The power plant will run in a base load regime, with a load factor of 95
percent such that the power will be offered to the system operator for dispatch
whenever it is available. Power will be offered on a net basis (ie the plant
internal load will be satisfied from generation before the main power station
fiscal meters). When operating base load, as described above, the expected
annual generation will be 3.25 TWh (3,250,000 MWh).
3.2.3 Proposed Site Layout
The proposed layout of the power plant is illustrated in Figure 3.1 below. This
figure illustrates a conceptual layout for an OCGT plant and includes potential
future conversion to CCGT technology (with air cooling).
Figure 3.1
Layout of Proposed Power Plant
Source: Azura Power West Africa, 2011
AZURA EDO IPP
3-5
DRAFT EIA REPORT