In April 2012, Kingsbury Inc. and PPL Holtwood, owner of the 108-MW Holtwood plant on the Susquehanna River in Pennsylvania, celebrated the 100th anniversary of operation of the first Kingsbury bearing ever installed. This bearing, installed on Unit 5 for a test trial, proved so successful it was then retrofit on the remaining six units between 1912 and 1914 and included during installation of three new units, one in 1914 and two in 1924.