LED lighting of Residential Areas - The economical option for Local Authorities. By Daniel Kasper and Johann Schleritzko

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1 LED lighting of Residential Areas - The economical option for Local Authorities By Daniel Kasper and Johann Schleritzko

2 Power required, in kw / km Power consumption per km of road, to generate the required lighting levels in terms of SANS 10098, for Class B roads, comparing different lamp sources H P S M H L E D H P S M V C F L L E D H P S M V C F L L E D 0 Class B1 Roads Class B2 Roads Class B3 Roads

3 Cost comparison, Class B1 Roads, Residential streets with medium to high volume traffic Group, in terms of SANS B1 100W HPS 150WMH LED 77W Cost of luminaire, inclusive lamp R Energy consumption per year, based on R 0.58 per kwh R Total annual lamp replacement costs R Cost of ownership over 5 years Initial Capital cost R 1,258 1,326 3,563 Total Energy cost R 2,191 3,410 1,467 Total Lamp Replacement Cost R 837 1,883 0 TOTAL COST OF OWNERSHIP AFTER 5YEARS R 4,286 6,619 5,030 Cost of ownership over 15 years Initial Capital cost R 1,258 1,326 3,563 Total Energy cost R 6,573 10,231 4,401 Total Lamp Replacement Cost R 1,004 2,260 0 TOTAL COST OF OWNERSHIP AFTER 6 YEARS R 8,835 13,817 7,964

4 Cost comparison, Class B2 Roads, Residential streets with medium volume traffic Group, in terms of SANS B2 70W HPS 57W CFL LED 45w Cost of luminaire, inclusive lamp R Energy consumption per year, based on R 0.58 per kwh R Total annual lamp replacement costs R Cost of ownership over 5 years Initial Capital cost R 1,198 1,280 2,680 Total Energy cost R 1,620 1, Total Lamp Replacement Cost R 837 1,099 0 TOTAL COST OF OWNERSHIP AFTER 5YEARS R 3,654 3,618 3,538 Cost of ownership over 15 years Initial Capital cost R 1,198 1,280 2,680 Total Energy cost R 4,859 3,715 2,572 Total Lamp Replacement Cost R 1,004 1,319 0 TOTAL COST OF OWNERSHIP AFTER 6 YEARS R 7,060 6,315 5,252

5 Cost comparison, Class B3 Roads, Residential streets with low volume traffic Group, in terms of SANS B3 70W HPS 57WCFL LED 45W Cost of luminaire, inclusive lamp R Energy consumption per year, based on R 0.58 per kwh R Total annual lamp replacement costs R Cost of ownership over 5 years Initial Capital cost R 1,198 1,280 2,680 Total Energy cost R 1,620 1, Total Lamp Replacement Cost R 837 1,099 0 TOTAL COST OF OWNERSHIP AFTER 5YEARS R 3,654 3,618 3,538 Cost of ownership over 15 years Initial Capital cost R 1,198 1,280 2,680 Total Energy cost R 4,859 3,715 2,572 Total Lamp Replacement Cost R 1,004 1,319 0 TOTAL COST OF OWNERSHIP AFTER 6 YEARS R 7,060 6,315 5,252

6 KEY FOCUSES ON LED LUMINAIRES Performing Future Proof Reliable

7 Performing

8 LED Luminous Efficiency compared to other light sources 2015: 150lm/W 2011: 112lm/W LED

9 Reliability, Lifetime

10 Photometry with LEDs : completely different? No Road Units : Lux, Cd/m², lumens, Watt, Light distribution Norms Same objective : Higher levels for less power with good uniformities! The solutions to control light are different!

11 Optimization of the utilization factor K "Unusefull" light Cut-off Effect Need to illuminate the side walks and facades! LED islolux HID islolux

12

13 Main Roads Luminance (A-roads) Residential Roads Illuminance (B-roads)

14 Path, sea front Parks, Squares

15 Future Proof

16 Upgradeable LED Engine and Electronics Future Proof The luminaire has to allow for on-site replacements of the photometric engine and electronic assembly at the end of an LED s service life, and thereby allow to integrate future innovations. Maximum Energy Saving To utilize the increasing energy saving possibilities that LED s and electronics will offer, the system should be upgradable whenever needed.

17 Serviceable Reliable

18 LED luminaires are part of an integrated system Thermal Mechanical Good thermal contact. LED temperature feedback. Optimized heat exchange surface. Electronic Highest quality of material. IP 66 rated gear compartment and photometric engine. Smooth Protector. Photometric Higher lifetime than LEDs at max. ambient temperature. Surge protection. Large primary voltage range. Objective : Higher levels for less power with good uniformities.

19 Conventional Street light Local Content comparison Local Content: Housing Protector Clips Imported Content: Lamp Ballast Igniter Condenser Lamp holder

20 LED Street light Local Content comparison Local Content: PCB (printed circuit board), excluding the LED chip Power Supply Housing Imported Content: LED chip

21 Local Content comparison, 80% local content 60% local content

22 Conclusion The time has come to apply LED street light luminaires for Class A4 and Class B applications. LED technology gives local companies the chance to increase the value-adding component in South Africa, increasing job creation and export opportunities.