System started: Steam, approximately 1914
(supplied from current plant since 1930); chilled
Services provided: Steam for space heating
and process needs; chilled water for space conditioning and process cooling.
Buildings on system: Steam, 160; chilled
Most unique building on system:
Massachusetts Hall, built in 1720 and oldest
building on campus. Continental Army soldiers
were sheltered there during the Revolutionary
War. Today, building’s first two floors house offices
of the university president, vice presidents and
other officers; freshmen live on upper floors.
Best tourist attraction: Harvard Yard, the
oldest section of campus. Site of the John Harvard
Statue, known as “The Statue of Three Lies” as
none of the statements in its inscription (“John
Harvard, Founder, 1638”) is true. University was
founded in 1636; Harvard was its first beneficiary.
Annually thousands of tourists rub statue’s shoe
for good luck.
System started: Steam, 1876; electricity, 1880;
chilled water, 1962.
Buildings on system: Steam, 130; electricity,
135; chilled water, 87.
Services provided: Steam, chilled water, primary
electric distribution and emergency power.
Most unique building on system: Nassau Hall.
Constructed in 1756, building suffered severely in
the Revolutionary War. British and American troops
quartered there, using furniture and woodwork
for fuel. In Battle of Princeton, building changed
hands three times. During British possession,
damaged by Washington’s artillery; cannonballs
destroyed portrait of George II and left scar visible
today on south wall of west wing.
Best tourist attraction: Besides Nassau Hall,
nine beautiful Collegiate Gothic-style dormitories
built during 1920s and ‘30s (including McCormick
Hall) to fill urgent need for on-campus student
housing after World War I.
System started: 1996
Services provided: Chilled water for space
Buildings on system: 49
Most unique building on system: National
Aquarium, which has a collection of more than
11,000 animals from more than 600 species of
fish, bird, amphibians, reptiles and marine mammals that live in award-winning, re-created habitats. Comfort Link provides space conditioning
and life support for cold-water fish and mammals.
Best tourist attraction: National Aquarium, one
of Maryland’s most-visited destinations. Opened
in 1981. Has played a key role in helping to
transform Baltimore’s Inner Harbor from blighted
port area to thriving attraction.
4NRG Energy Center Dover LLC
Photo Dan Gill
Dover International Speedway
5U.S. General Services Administration, Heating Operation & Transmission
System started: 1933
Services provided: HOTD is government-owned district energy system consisting of Central Heating
and Refrigeration Plant, West Heating Plant and Steam Distribution Complex. Provide building heating
and cooling, domestic hot water, food services, industrial processes, electric power.
Buildings on system: steam, 100; chilled water, 12; provide 10 MW electricity.
System started: 1985. NRG Thermal acquired
combined heat and power plant in 2000.
Services provided: Thermal steam for neighboring Kraft Foods processing plant; electricity
for the mid-Atlantic region’s PJM market – the
largest competitive wholesale electricity market in
the world – which meets approximately 10 percent
of Dover’s energy needs, and 88 MW peaking
electrical energy for the East Coast’s Delmarva
Peninsula, between Chesapeake Bay and the
Buildings on system: Kraft Foods, which has
been in Dover more than 40 years (plus buildings
receiving electric service)
Most unique building on system: Electric
customer – Delaware State House. Built in 1792
and the second-oldest state house in continuous
use in the United States.
Best tourist attraction: Nearby Dover International Speedway, a NASCAR racetrack. Each
year during NASCAR season Dover’s population
expands from 30,000 to more than 200,000
with tourists from across the country.
Most unique building on system: Smallest space heated is top of Washington Monument.
Best tourist attraction: Among others, serve steam and chilled water to Smithsonian museums on
the National Mall.