Gas Technology Institute (GTI) is a natural gas test plant and research facility located in a suburb of Chicago. GTI decided to install a 3,600 sq. ft. cogeneration facility/testing lab and 2.5MW cogeneration system. The project consists of one (1) Cummins QSV81 engine generator at 1,100KW and one (1) Caterpillar 3516 engine generator at 1,360KW. The system provides 100% of peak operation power and back-up power in cases of emergency.