This methodology kept the existing design solutions but calculated the use of more
efficient equipment. In some cases where the actual audit data revealed that the
courtroom was overlit, the redesign model was able to save energy by adjusting the
light output down to IESNA recommended light levels. In all but one of the courtrooms
downlights and wallwashers using compact fluorescent lamps (CFL) were substituted
for incandescent PAR lamps. In four of the seven courtrooms it was also possible to
retrofit the linear fluorescent fixtures by replacing standard T8 electronic technology
with high performance T8 systems.
Table 3 provides a summary of the initial lighting power characteristics for each
courtroom location and the potential re-design power characteristics and savings. The
table shows an average potential savings of 27.6% and 1.2 watts per square foot.
Table 3. Modeled Re-design Showing Savings from Efficient Technologies
Lighting
Re-design
Percent
Square
Proposed Re-Design
Re-design
Courtroom Description
Wattage
Power
Power
Power
Footage
Technlogy
wattage
Density (1,2)
Density
Reduction
Tampa, FL
9,896
2,287
4.3
CFL Wallwash (in
7,006
3.1
29.2%
801 North Florida Ave
place of Quartz
(Gibbons Courthouse-
wallwash) & partial
District Courtroom, 13B)
retrofit to HPT8
Tampa, FL
11,976
2,287
5.2
CFL Wallwash (in
9,086
4.0
24.1%
801 North Florida Ave
place of Quartz
(Gibbons Courthouse-
wallwash) & partial
District Courtroom, 14B)
retrofit to HPT8
Tallahassee, FL
12,920
2,439
5.3
CFL Downlight Open
8,453
3.5
34.6%
111 North Adams St.
(in place of PAR38
(US Courthouse-
incandescent
District Courtroom)
downlight)
Montgomery, AL
7,005
2,196
3.2
CFL Downlight Open
6,081
2.8
13.2%
One Church Street
(in place of PAR38
(Johnson Courthouse-
incandescent
District Courtroom)
downlight)
Columbia, SC
17,360
3,840
4.5
CFL Downlight Open
8,273
2.2
52.3%
901 Richland Strreet
(in place of PAR38
(Perry Courthouse-
incandescent
District Courtroom 13B)
downlight) & partial
retrofit to HPT8
500 Pearl Street
11,310
3,168
3.6
CFL Downlight Open
7,786
2.5
31.2%
Manhattan, NY
(in place of PAR38
(Moynihan Courthouse- Foley
incandescent
Square, Rm 15A)
downlight)
Central Islip, NY
7,260
2,210
3.3
Retrofit from standard
6,613
3.0
9%
100 Federal Plaza
T8's to High
(Alfonz D'Amato Courthouse-
Performance T8
9th floor Courtroom)
Averages
11,104
2,632
4.2
Averages
7,614
3.0
27.6%
NOTES: (1) Data was based on the most reliable information available at the time of analysis, and is subject to change should
additional information become available. (2) Lighting Power Density is Watts per Square Foot.
March 2006
Page 11
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