HL&P/Du Pont Cogeneration Project

Abstract

The HL&P/Du Pont Cogeneration Project is an arrangement between Houston Lighting & Power Company and E. I. Du Pont de Nemours whereby the utility-owned cogeneration facility supplies a portion of the Du Pont process steam requirements. The facility consists of two cogeneration systems, each comprised of a natural gas fired GE 80 MW Frame 7EA, or equivalent, exhausting into a heat recovery steam generator (HRSG). Gas turhines are equipped with steam injection capability for power augmentation. Supplementary fireable HRSG's provide additional supply reliability for the steam host. Electricity from the project is delivered into HL&P's System through a new 138 KY substation. Such an arrangement offers Du Pont a significant cost saving opportunity as less efficient steam raising equipment is displaced. It also provides HL&P ratepayers with significant benefits, given the fuel efficiencies associated with cogeneration projects.