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Harrisburg System ProfileThe Harrisburg district energy system traces its origins to a local steam business founded in 1887. After several consolidations, the operation was purchased in 1929 by Pennsylvania Power and Light and in 1985, by Harrisburg Steam Works. In 1986, the Steam Works added 12 MW of cogeneration and, in 1997, a 2,400-ton chilled-water plant. The system was purchased by NRG Thermal in 2000. Since the mid-1980s, Harrisburg has experienced a renaissance of its downtown area. During this time, we have grown along with the city, adding the majority of newly constructed buildings as customers to our system. Services provided: Steam for space heating, domestic hot water heating, humidification and industrial processes. We also repair and maintain customer steam equipment and help customers develop annual steam budgets.
![]() Click on image for pdf of system map (0.2 MB) Area served: 1 square mile of Harrisburg’s central business district. Buildings on system: District heating, nearly 270 customers; district cooling to both the PinnacleHealth System's Harrisburg Hospital and the Dauphin County Courthouse complexes. Building space served: 11 million square feet. Total overall system capacity: 450,000 lb/hr of steam and 2,400 tons of cooling (close to 8 million ton-hours annual chilled-water sales).
Plants: Chilled-water plant. South Second Street. Operates under NRG Thermal Services. Houses two 1,200-ton electric-driven chillers. In addition to current plant capacity, steam purchased from the City of Harrisburg's incinerator will add another 150,000 Mlb of capacity beginning in 2006.
Distribution network: 7 miles of steam pipe and 724 trench feet of chilled water piping.
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