The document discusses a project called ISLES that tested dynamic street lighting to reduce energy consumption. Sensors were installed on street lights in Achtse Barrier, Netherlands to dim the lights based on detected movement. This led to energy savings of 19.1-37.8% from switching to LED lights and up to 57.5% by additionally implementing dynamic dimming based on a preset dimming schedule. Simulation results found energy reduction was possible but guidelines on illumination levels were sometimes not met and it may not be cost effective for the amount of energy saved per light.

1. Energy Saving and
Dynamic Street Lighting
Richard Verhoeven
Intelligent Lighting Institute

2. Content
• ISLES project and Living Lab
• Dynamic Street Lighting
• Energy Savings
• Conclusions
/ Intelligent Lighting Institute PAGE 123-3-2015

3. ISLES project
• Intelligent Street Lighting for Energy Saving & Safety
• support responses to changes in the environment with the
explicit goal to reduce energy consumption.
• in a realistic testbed
• their impact on users (residents)
/ Intelligent Lighting Institute PAGE 223-3-2015

4. Living Lab Achtse Barrier
/ Intelligent Lighting Institute PAGE 323-3-2015
Luminaire + PIR
Luminaire
Cabinet
Dynamic area
Residential
• 30 km/h
LEDs
• July 2013
Dynamic
• October
School
Shops

5. Dynamic Lighting in Achtse Barrier
/ Intelligent Lighting Institute PAGE 423-3-2015

6. Dynamic Lighting – Recipe
/ Intelligent Lighting Institute PAGE 523-3-2015
0
20
40
60
80
100
00:00 00:15 00:30 00:45 01:00 01:15 01:30
Illuminationlevel(%)
Time since detection (mm:ss)
Hold time Dimming down time

7. Energy reduction – LED installation
/ Intelligent Lighting Institute PAGE 623-3-2015
0
10
20
30
40
50
60
15:00 18:00 21:00 0:00 3:00 6:00 9:00
Energyconsumption(W)
Energy consumption for a luminaire on Cotentinlaan
Old configuration
LED configuration

8. Energy reduction – LED installation
/ Intelligent Lighting Institute PAGE 723-3-2015
Fransebaan
19.1 %
Cotentinlaan
37.8 %

9. 0
10
20
30
40
50
60
15:00 18:00 21:00 0:00 3:00 6:00 9:00
Energyconsumption(W)
Old configuration
LED configuration
Dynamic
Energy reduction – dynamic dimming
/ Intelligent Lighting Institute PAGE 823-3-2015
40%
60%

10. Energy reduction – dynamic dimming
Simulation of two luminaires based on measured activity
/ Intelligent Lighting Institute PAGE 923-3-2015
Fog Fog
Storm New Year

11. Energy reduction - overview
Fransebaan Cotentinlaan
Consumption Reduction Consumption Reduction
Old - static 90.0 kWh 0.0 % 41.8 kWh 0.0 %
LED – static 72.7 kWh 19.2 % 25.3 kWh 39.5 %
LED – dynamic 77.3 kWh 14.1 % 17.8 kWh 57.5 %
• Based on 1154 hours of collected data
• No extra reduction on Fransebaan
• For the current hardware and dimming recipe
/ Intelligent Lighting Institute PAGE 1023-3-2015
30%7.5

12. Energy reduction – alternative recipes
/ Intelligent Lighting Institute PAGE 1123-3-2015
Reduction target
Current configuration
0
20
40
60
80
100
120
15:00 18:00 21:00 0:00 3:00 6:00 9:00
Energyconsumption(W)
66%
Follow static schedule
to ensure reduction34%

13. Conclusions
• Method for estimating the energy savings
• Simulation of the responses to measured activity
• Independent of the actual luminaires
• Energy saving with dynamic lighting is feasible
• Dependent on activity distribution and lighting recipes
• Some NSVV guidelines are ignored
− P5/P6 illumination & uniformity, weather conditions,
crossings
• Unlikely to be cost effective
• 28W  30% saving  27.3 kWh/year  6.28 €/year
/ Intelligent Lighting Institute PAGE 1223-3-2015