Carlisle Gas and Water Company (Pa.).

Incorporated in 1853 by a special act of the Pennsylvania legislature, the Carlisle Gas & Water Co. was Pennsylvania Power & Light's oldest predecessor.

The Borough of Carlisle, Cumberland County was one of the company's major stockholders and represented on the board of managers. In 1855, the firm constructed a gas plant and distribution system and negotiated a street lighting contract with the borough. Within a few years its residential lighting business was flourishing and the company used its surplus capital to build a dam and hydroelectric plant on Conodoquinet Creek.

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