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The Central Steam Plant has three Babcock and Wilcox FM-9 water tube boilers, each capable of producing 30,000 pounds of steam per hour at 300 psig. The plant was brought on line in 1993 and burns over 1,000,000 gallons of #6 fuel oil. Peak winter loads average 43,000 pounds of steam per hour. During the heating season, the 300 psig steam is piped through a turbine generator that exhausts steam out to campus at 50 psig. This process is typically called "co-generation". The steam is distributed through an underground distribution system that is approximately 9,000 feet in total length. This underground distribution system not only carries steam to the campus buildings, but also returns the condensed steam back to the plant. The turbine generator was bought on line in 1999 and has produced almost 5,000,000 Kw-hrs in that time. The steam plant produces over 130,000,000 pounds of steam per year. The Central Steam Plant operates 24 hours per day, 365 days per year.


Demand for electricity on campus is typically around 2.4 megawatts. The campus consumes over 10,000,000 Kw-hrs of electricity per year. Power is fed onto campus from Central Maine Power distribution lines. The 12,470 volts of electricity is fed underground in a concrete encased piping system consisting of three main loops.


The campus maintains it's own distribution system consisting of a pump house, that takes incoming city water and boosts the pressure, a 158,000 gallon storage tank, and over 11,000 feet of underground water mains.


The campus sewer system has 100 sewer manholes and 11,000 feet of sewer piping. The system was recently upgraded in co-junction with the Waterville Sewerage District, which is also the authority having jurisdiction over the Colleges activities and conveys our sewerage to the Kennebec Treatment Facility.

Storm Sewer

The College maintains a separate storm water system that conveys storm water from parking lots, roads, and from building perimeter drainage systems. This water is conveyed to outfalls and detention ponds across the campus property.


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Colby College  Physical Plant Department  5000 Mayflower Hill Drive  Waterville, Maine 04901-8849
  T: 207-859-5000  F: 207-859-5005

Last Modified: 12/09/02 05:13:45 PM