Following the formation of the Niagara Falls Power Company in 1918, Schoellkopf Jr. was elected chairman of the board for the corporation, a position that he held for eighteen years. Jacob Frederick III, Paul Arthur (the son of Arthur Schoellkopf), and other third-generation members of the family also continued to be involved as directors and stockholders of the company. In 1929, they organized the Niagara Share Corporation as a trust for all the stock owned by family members.