Footprint for Very Large Combined Cycle GT Set 1

[cod]

An assiciate has asked me what the area might be required for one each very large combined cycle gas turbine generator setup, i.e., what its footprint might be. He wants a figure for the largest GT-C unit available. I have seen 300 and 500 MW units described on the Web but since I very seldom (if ever) venture above 30 MW, I have no idea how to advise him. All I can guess is "big" but the question is "how big" would the footprint be for the major elements and auxiliaries?

Any help would be appreciated for his research project.

CharlieD

 

[Alex68]

Dear COD,
some indicative dimensions for a CC composed by a 280MW GTG and 140MW STG:

Step up transformer (GTG) = 17.5m x 15m
GTG = 10m x 15m
GT = 17.5m x 15m
HRSG = 22.5m x 50m
ST = 15m x 25m
STG = 15m x 12.5m
Step up transformer (STG) = 17.5m x 15m

+ HV substation

Regards
Alex68