Lighting Projects

Most if not all incandescent lights (except for specialty lighting) has been changed out to florescent lighting. Most of the older T12 40w florescent lights has been replaced with newer more efficient T8 32w or even 25w florescent lights. Some of the newest projects have gone to LED lights.

Lighting Comparison Chart

Lighting Type

Efficacy (lumens/ watt)

Lifetime (hours)

Color Rendition Index (CRI)

Color Temperature (K)

Indoors/ Outdoors

Incandescent

Standard "A" bulb

10–17

750–2500

98–100 (excellent)

2700–2800 (warm)

Indoors/ outdoors

Energy-Saving Incandescent (or Halogen)

12–22

1,000–4,000

98–100 (excellent)

2900–3200 (warm to neutral)

Indoors/ outdoors

Reflector

12–19

2000–3000

98–100 (excellent)

2800 (warm)

Indoors/ outdoors

Fluorescent

Straight tube

30–110

7000–24,000

50–90 (fair to good)

2700–6500 (warm to cold)

Indoors/ outdoors

Compact fluorescent lamp (CFL)

50–70

10,000

65–88 (good)

2700–6500 (warm to cold)

Indoors/ outdoors

Circline

40–50

12,000

  

Indoors

Light-Emitting Diodes

Cool White LEDs

60–>180

25,000–100,000

70–90 (fair to good)

5000 (cold)

Indoors/ outdoors

Warm White LEDs

27–>180

25,000–100,000

75–95 (fair to excellent)

3300 (neutral)

Indoors/ outdoors

 

Note: The LED technology is evolving so quickly that just two years ago (2011) the best efficacy was about 80 lumens per watt.  Last year (2012) they broke 100 lumens per watt and a recent article (2013) listed top efficacy at 180 lumens per watt.