An interior view of the cell and switch room of the Lykens Power Plant of the Lykens Valley Coal Company, Short Mountain Colliery, Bear Gap, Dauphin County, Pennsylvania, as it was under construction in 1920. These cells and switches stored and evenly distributed the electrical output of the plant.
The power plant was constructed to save money on power generation and when completed provided a cheaper and more efficient form of power for the colliery. In addition, surplus electricity was provided to the Williamstown collieries, and for Lykens Borough and the town of Wiconisco.
Corrections and additional information should be added as comments to this post.