The Company activities series is organized into four subseries: Annual reports, Events and meetings, Principal items of property, and Projects and stations. All subseries are arranged in alphabetical order.

The Annual reports subseries consists of photographic prints taken from Pennsylvania Power & Light annual reports from 1949 to 1958. These include views of power stations and images illustrating electric use (industrial and residential) in central Pennsylvania. The images also show company activities such as facility operations, construction projects, and shareholder events. Some years include the published annual report. There are also photograph use permission release forms.

Events and meetings subseries include the directors' tour of 1954, shareowners' meetings, and 40th-anniversary celebrations, which took place in 1960. There are also images and sound recordings from the 1964 New York World's Fair.

The Principal items of property subseries contains eight albums, "Principal Items of Property," of the Pennsylvania Power & Light Company presented as evidence before the Pennsylvania Public Utility Commission in 1943. These photographic prints include views of power plants (Stanton, Bennett, Hauto, Harwood, Pine Grove, Kulpmont, Good Spring, Lykens, Millersburg, Cedar, Walnut, South Milton, Williamsport, Lock Haven), transmission lines, substations (Siegfried, Wallenpaupack, Freemansburg, Allentown, Cherry Hill, Wilkes-Barre, Frackville, Exchange, Fishbach, Shenandoah, Greenwood, Harrisburg, Carlisle, Engleside, Donegal, Berwick, Danville, Northumberland) and general buildings (including service depots).

The Projects and stations subseries include brush cutting, quarry stripping, the construction of general buildings and transmission lines, and the implementation of electricity for daily operations within a dairy farm. Images of stations within this series include those of Holtwood hydro station and Safe Harbor Water Power Corporation hydroelectric development. Materials date from 1926 to 1966.