The 15 MW demonstration was successful and the full-scale program went ahead. Dow proceeded to build a full-scale oxygen-blown gasifier sized to supply the two W501D5s at Plaquemine, LA with 80% of their fuel energy, and Westinghouse was given the go-ahead to design and manufacture the new fuel nozzles. Since the gas turbines were an integral part of existing plant operations, the specification was to assure "dual-fuel" capability, so that the unit could easily revert to natural gas when the gasifier was not in operation.