Schoellkopf served as chairman of the Buffalo Niagara Electric Corporation and was a trustee of Cornell University.

[1] After graduation, he entered the family business and in 1913, succeeded his father as general manager and treasurer of the Hydraulic Power Company of Niagara Falls.

[1] In 1925, the Niagara Falls Power Company joined with other operating western New York utilities to form the Buffalo, Niagara and Eastern Power Corporation, with Schoellkopf as president.

[4] At one time Schoellkopf, Dudley, and Gray owned all the land at "Lewiston Heights."

He was a director of the Buffalo Museum of Natural History and a trustee of Cornell University.