Gas-power central station of the Duquesne Light Co., Pittsburg, Pa.

Although the territory now supplied by the Duquesne Light Company was already covered by the distribution system of another company, there seemed to be room for further business for a central station securing the advantages of more uniform regulation and distributing directly from the center of gravity of its load, thus obviating the first cost, the maintenance, and the losses of long transmission lines. Work was begun on June 28, 1906, and by October 5, the power station and distribution system were far enough completed to start regular 24-hour service. During the following six months the service increased so rapidly that the station is now heavily loaded and running on an excellent load-factor. The service consists of residential and commercial lighting and power, and these merge into a load having an exceptionally long hour evening peak and a fairly even day load. The 60-cycle generators are wound three phase, star connected, and the distribution is partly underground and partly overhead to standard 2200-volt transformers, which in turn are connected to 110/220-volt secondaries.