Proposal for INTERTOLL- Zinara Toll Plaza, Bulawayo Plaza 1. Executive summary

The current HPS & MH lighting technology suggested for this project will result in colour variation and short lifespan. The frequent power outages will further reduce the life and cause the globes to fail. Scissor Poles will be a costly way to constantly replace the globes. The interior lights (CFL & fluorescent tubes) will be the same with life of less than 12 months. CLED lights are instant on and surge protected. The typical lifespan is 12 years will give a crisp, whiter light. In addition, CLEDs, unlike LEDs, can take heat over 50 deg. Cel. The energy saving that Illuminate can generate are in excess of 68% and the site will be more cost effective as well as the additional costs paying back in less than 23 months.

2. Brief introduction to CLED Technology Chemical based LEDs or CLEDs are organic LEDs based on phosphorescing Kuttle fish. It is more advanced than any other lighting technology there are no heat problems and the life exceeds 50 000 hours

3. Purpose of the Toll Plaza Project

To prove that Illuminate Chemical Light (CLED) technology saves more than any other lighting technology, lasts longer and is cost effective.

4. Project Outline

• The project is broken down to the Admin Building and the street lighting • CLED lights will be used to replace almost all the lights already proposed • SANS 10098-2 regulations will be adhered to

5. Products to be compared

The table on the next page shows the typical conversion used to meet the required lux levels and is based on the proposed ‘old technology’ lighting and how many CLED units are required:

6. Technology Comparison

Why the current technology in inferior: • CFLs and T-5 Fluorescents

• Short realistic life of less than a year; so require regular maintenance • Poor light colour and quality

• HPS • Orange light • Requires 15-20 minute start-up and cool-down period • Zimbabwe has serious regular power cuts; lights will blow on a regular

basis and will require replacement for visibility and safety • Consumes significant power • Runs hot

• MH lights • Similar reasons to HPS

7. Why CLED lights are Superior • Most energy efficient (68% saving for this project) • Auto restart and surge protection on Drivers • No burn cycle • 70 000 hour life

• No flickering & no start-up time • Instant on and off • Little maintenance

Admin Building

Conversion ratio (CLED to Old)

Admin Building

CLED Lights

Old Technology 16W Down light CW 3 to 1 T-5 fluorescent 2x54W 15W Down light CW 1 to 1.5 Recessed CFL 13W

35W VEE-Bulb Bulkhead 1 to 2 Bulkhead 2x18W Floodlight 2x26W

Street Lighting

Street Lighting CLED Lights

Old Technology

120W Floodlight 1 to 1 BEKAMAX 400W MH

BEKASTRADA SUPRA 400W HPS

35W VEE-Bulb Streetlight 2 to 1 BEKASTRADA SUPRA 150W HPS 1 to 1 BEKANOVA 150W MH 1 to 1 BEKALANE SUPRA 100W HPS

• Cool white colour is crisp and gives high visibility • Cool running at 34 deg. Cel.

8. The Solution

The additional cost of the Illuminate CLED lighting system will pay back in less than two years. This is due to the energy savings of 68%. Factors not quantified, but support the CLED solution:

• Maintenance and replacement costs for CFLs and T-5 fluorescent tubes • High cost of replacing HPS and MH bulbs due to power cuts and specialist

equipment • CLED lights will require very little maintenance so there is no human error

involved • No replacement of CLEDs for approximately 16 years

Street lighting The HPS/MH solution suggested would require costly Scissor Mast/ Poles that are costly. Regular galvanised poles can be substituted for a cost saving.

Note: Lux charts can be found in the Append

9. Financials

The table below shows the number of CLED units required to replace the old technology and the associated savings.

Energy'Consumption'Summary'Admin'Building' ! ! !ILLUMINATE'LIGHTS' !! !! !!Unit!type! wattage! Units! Consumption!(kW)!16W!Downlight!CW! 16! 27! 0.432!15W!Downlight!CW! 15! 17! 0.255!35W!VEECBulb!Bulkhead! 35! 6! 0.210!Total' ! 50! 0.897!COMPETITOR' ! ! !Unit'Type' wattage! Units! Consumption!(kW)!

TA5'fluorescent'54W' 118! 9! 1.062!Recessed'CFL'13W' 13! 25! 0.325!Bulkhead'2x18W'' 36! 3! 0.108!Floodlight'2x26W' 52! 9! 0.468!'Total' ! 46! 1.495!

9.1. Saving Summary This is a summary of the above tables:

Street Lighting ILLUMINATE LIGHTS

Unit type wattage Units Consumption (kW)

120W Floodlight 120 12 1.440 35W VEE-Bulb Streetlight

35 16 0.560

Total

2.00 COMPETITOR

Unit Type wattage Units Consumption (kW)

BEKAMAX 400W MH

461 8 3.688

BEKASTRADA SUPRA 400W HPS

440 4 1.760

BEKASTRADA SUPRA 150W HPS

165 2 0.330

BEKANOVA 150W MH

175 8 1.400

BEKALANE SUPRA 100W HPS

110 4 0.440

Total

7.618

kW saving

Rand kWh Saving (annualised)

% Saving

Admin Building 0.7 R3 057.60 40% Street Lighting 5.618 R24 539.42 74% Total 6.318 R27 597.02 68%

9.2. Costing Summary

This is a comparison to the quotes already received. The full costing is found in the appendix to this proposal.

9.3. Financial Summary The additional costs have been analysed and will pay back in less than two years; and continue to generate savings on the less efficient lights.

10. Conclusion

CLED lights have the proven long life, energy savings and quality. One needs to look forward to the next 5-years and higher electricity prices to realise that traditional HID lights and fluorescents are out-dated and poor performing. This proposal has quantified the additional costs and illustrated a short payback for a lighting system that will save more power and last at least 15 years.

COSTING COMPARISON Admin Building Province Lighting R29 875.60 Illuminate Lights R38 560.00 Net Difference -R8 684.40

Street Lighting Beka HID quote R79 086.00 Illuminate Lights R123 088.00 Net Difference -R44 002.00

Overall Additional Costs -R52 686.40

Overall energy cost savings R27 597.02

Payback Period for additional costs (years) 1.91

Weighted ave. Savings 68%

5-year cumulative savings R85 298.72

11. Appendix 11.1. Financials

1.1. Lux Charts

16W Down Light Height (m) Lux

1 304

2 74

3 34

4 19

5 12

15W Down light Height (m) Lux

1 211

2 57

3 28

4 18

5 11

120W'Floodlight'

Height'(m)' Lux!

1' 4630!

2' 1110!

3' 532!

4' 286!

5' 317!

6' 160!

7' 133!

8' 105!

9' 88!

10' 67!

11' 55!

12' 47!

13' 33!

14' 30!

15' 25!

35W Vee-Bulb Height (m) Lux

1 786

2 282

3 151

4 76

5 66

6 46

7 26

8 20

9 16

10 13

11 10

12 9

13 7

14 6

15 5