Federal Energy Management Program technical assistance case study: The Forrestal Building relighting project saves $400K annually Page: 1 of 6
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The Forrestal Building Relighting %e tt
Saves $400K Annually
DOE cuts lighting costs more than 50% and pays for the project
with the money saved on energy bills
The U.S. Department of Energy
(DOE) believes energy efficiency
begins at home-in this case the James
A. Forrestal Building in Washington,
D.C. Since 1969, the 1.7 million-square-
foot Forrestal Building has served as
Relighting the way
In 1989, a team of in-house energy
specialists began searching for opportu-
nities to make the Forrestal Building
more energy efficient. The team, on
which personnel from the Federal
Energy Management Program (FEMP)
served, identified lighting as an area in
which energy use could be reduced
substantially. A monitoring program
showed that the building's more than
34,000 1-foot by 4-foot fluorescent light-
ing fixtures were responsible for 33%
of the building's total annual electric
energy use, which represents more
than 9 million kilowatt-hours (kWh)
MENT IS UNLIMITED )%
At tme torrestal buuaing, replacing the
standard lighting fixtures with energy-
efficient ones saves DOE more than an
estimated $400,000 a year.
In initiating the relighting program,
DOE hoped to achieve these broad goals:
" Reduce energy use and utility bills
" Improve lighting quality by distrib-
uting the light more uniformly.
Funding was also an important
consideration. DOE sought financing
alternatives through which the lighting
retrofit is paid for without using
government-appropriated capital funds.
The lighting retrofit
After issuing a request for propos-
als, DOE invited each of the qualified
bidders to conduct a live demonstra-
tion of the technologies they were pro-
posing for the lighting retrofit. During
each demonstration, energy specialists
monitored the overall energy consump-
tion of each proposed retrofit, the illu-
minance levels throughout the test
space, and the power harmonics.
The contract was awarded to EUA
Cogenex Corporation of Lowell,
Massachusetts, and work began in
March 1993. EUA Cogenex replaced
the multi-lamp fluorescent fixtures
with units consisting of a single lamp
and a reflector. The fixture ballasts
were wired in tandem. The following
is a list of the major componen s EUA
Cogenex selected for the retrofit project:
* TL80 32-watt T-8 lamps from
Phillips Lighting Company
- Magnetek Triad electronic ballasts
e Specular silver reflectors from
" Motion sensors made by Leviton
Manufacturing Company (EUA
Cogenex installed 287 motion sen-
sors in non-office locations to better
manage lighting in infrequently
To recycle the waste products,
EUA Cogenex opted to dispose of the
old lamps, fixtures, and ballasts
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Federal Energy Management Program technical assistance case study: The Forrestal Building relighting project saves $400K annually, report, January 1, 1997; Golden, Colorado. (digital.library.unt.edu/ark:/67531/metadc677393/m1/1/: accessed November 17, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.