National Register of Historic Places in Alameda County
During the First World War, the Union Iron Works Powerhouse was the main electrical generating plant for the Alameda Works of the Union Plant, a division of the Bethlehem Shipbuilding Corporation. The Alameda Works was the largest shipbuilding plant on the Pacific Coast. The powerhouse was the first PG&E substation in Alameda, a city with its own Bureau of Electricity. The power requirements of the shipyard were so great that it contracted with PG&E in 1916.
The classical revival building, designed by Frederick H. Meyer, is an excellent example of a building type common in the early 20th century, the beautiful power house. Meyers was one of the architects most closely associated with the design of classical power houses for PG&E.