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Pennsylvania Water and Power

An American utility company associated with hydroelectric and coal-fired electricity generation.

Last updated August 25, 2026

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Overview

Pennsylvania Water and Power was an American utility company involved in the generation and supply of electric power, particularly through hydroelectric facilities. The available historical record identifies it as an early electricity enterprise in Pennsylvania and notes that it operated a power plant combining hydroelectric and coal-fired generation on the same site. This combined use of water power and coal generation was historically significant because it represented an early integration of two different generating technologies within one power station. The company’s activities extended beyond its own generating facilities. In 1930, Pennsylvania Water and Power became a minority shareholder in the Safe Harbor Water and Power Corporation, a company formed to build and operate the Safe Harbor Dam and associated hydroelectric works. The principal shareholder was the Consolidated Gas Electric Light and Power Company of Baltimore, which held a two-thirds interest. The Safe Harbor project was developed on a substantial scale: its dam, reservoir, and generating plant were completed and placed into operation within two years. The completed station contained seven generating units with a combined capacity of 230 megawatts and reportedly required an investment of $34 million. Pennsylvania Water and Power therefore occupied a position within the development of large-scale regional utility infrastructure rather than functioning solely as a small local electricity provider. Its participation in Safe Harbor connected it to the expansion of coordinated hydroelectric generation and utility investment in the Mid-Atlantic United States. The company is also associated with John Abbet Walls, who served as its president. The available reference material does not establish the company’s exact founding date, original founder, later corporate ownership, final operating date, or present legal status. It also does not provide enough information to document a modern consumer-facing brand, a broad product portfolio, or operations outside the United States. Accordingly, Pennsylvania Water and Power is best understood as a historical American power utility whose significance lies in early mixed-source generation and its investment in the Safe Harbor hydroelectric project.

History

Pennsylvania Water and Power was an American utility company involved in the development of electric-generating infrastructure in Pennsylvania. The company is historically notable for operating a power plant that combined a hydroelectric generator with a coal-fired generator at the same site. This arrangement made it an early example of a utility using different generation technologies together to provide electricity, linking renewable water power with thermal generation based on coal. The surviving reference material does not specify the company’s incorporation date, original founders, service territory boundaries, or the precise communities supplied by its distribution network. It does, however, identify the company as an American enterprise and names John Abbet Walls as its president. The company’s activities appear to have centered on electric power generation and utility infrastructure rather than on a consumer product brand in the modern sense. A major documented development occurred in 1930, when Pennsylvania Water and Power acquired a minority interest in the Safe Harbor Water and Power Corporation. Safe Harbor was incorporated to build and operate the Safe Harbor Dam and its associated hydroelectric generating plant. The project was led financially by the Consolidated Gas Electric Light and Power Company of Baltimore, which held a two-thirds majority interest, while Pennsylvania Water and Power participated as the minority shareholder. The Safe Harbor scheme was completed rapidly. The dam, lake, and generating plant were all constructed and operating within two years. The facility ultimately contained seven generating units with a total capacity of 230 megawatts, at a reported cost of $34 million. Through this investment, Pennsylvania Water and Power participated in the construction of a large regional hydroelectric project and in the broader expansion of interconnected utility infrastructure in the Mid-Atlantic United States. The available sources do not document the company’s subsequent mergers, sales, renaming, dissolution, or relationship to any later utility organization. They likewise do not establish whether the company remains legally active. Its historical importance is therefore best described through its early mixed-generation plant and its minority participation in the Safe Harbor project, rather than through a continuous modern corporate history.

  • 1930

    Investment in Safe Harbor Water and Power Corporation

    [1]

    Pennsylvania Water and Power became a minority shareholder in the corporation created to construct and operate the Safe Harbor Dam and hydroelectric generating project. Consolidated Gas Electric Light and Power Company of Baltimore held the two-thirds majority interest.

  • Safe Harbor project completed and placed into operation

    [1]

    The Safe Harbor Dam, lake, and generating plant were completed and operating within two years. The station had seven generating units with a combined capacity of 230 megawatts.

Products and positioning

A historical regional electricity utility associated with hydroelectric development and the integration of water-powered and coal-fired generation.

  • Electricity generation

    Hydroelectric power generation

    Pennsylvania Water and Power was associated with hydroelectric electricity generation, using the energy of moving water as part of its utility operations. Its historical significance is also connected to participation in the Safe Harbor hydroelectric project, a large dam and generating installation developed in the early twentieth-century American utility sector.

  • Electricity generation

    Coal-fired power generation

    The company operated a power plant that combined a coal power generator with a hydroelectric generator at the same site. The arrangement represented an early form of mixed-source utility generation and allowed thermal and water-powered technologies to coexist within one generating complex.

  • Utility infrastructure investment · 1930

    Safe Harbor hydroelectric project

    Through its minority shareholding in Safe Harbor Water and Power Corporation, Pennsylvania Water and Power participated in the development of the Safe Harbor Dam, reservoir, and generating plant. The completed facility contained seven generating units with an aggregate capacity of 230 megawatts.

Brand decisions

  • 1930

    Participated in the Safe Harbor developmentStrategy

    Background

    The Safe Harbor Water and Power Corporation was created to build and operate a major dam and hydroelectric station. Pennsylvania Water and Power joined the project as a minority shareholder, alongside the majority shareholder Consolidated Gas Electric Light and Power Company of Baltimore.

    Action taken

    Pennsylvania Water and Power invested in the newly incorporated Safe Harbor company and thereby took part in the development of a large regional hydroelectric facility.

    Aftermath

    The dam, lake, and generating plant were completed and operating within two years. The facility ultimately comprised seven generating units with a combined capacity of 230 megawatts.

    Reported construction cost of the Safe Harbor project. $34 million (Project construction period, completed within two years after 1930)

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