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600 Indiana Street Lights Upgraded to LEP

Case Study: Scottsburg, Indiana (US I-31 and IN-56)
Application: Street and Roadway Lighting

When the City of Scottsburg, Indiana, decided to upgrade its lighting from High Pressure Sodium, they found that LED solutions were too costly for their budget and would not provide adequate lighting without additional poles.

They became interested in an LEP solution when they found out it would allow them to significantly reduce the number of luminaires while still maintaining existing light levels. Stray Light Optical Technologies, an LEP lighting manufacturer, helped the City upgrade 600 street and roadway luminaires.

HPS Lighting
460W HPS Lighting
600 fixture installations
LEP Lighting
280W LEP Lighting (Tesla II luminaires)
420 fixture installations (30% fewer)

Highlights

  • Reduced the number of fixtures by 30% while maintaining brightness and safety levels
  • 60% energy savings compared to existing HPS solution
  • Greatly reduced maintenance and energy costs, resulting in full payback after only 18 months
    • More than $200 annual savings on energy costs per fixture
    • Reduced lamp replacement from 4-year to 11-year cycles
  • Improved the quality of light from yellow to white light with 2.4x better nighttime visibility
  • Dark-Sky compliant with improved light uniformity
  • Reduced the environmental footprint by 558 tons of CO2 emitted per year

Detailed Results

BeforeAfterSavings
Average Fixture Power460W280W180W
Number of Fixtures600420180
Daily Usage12 Hours12 HoursN/A
Lamp Replacement Cycle4 Years11 Years7 Years
Annual Operating Costs
Electricity Consumption (kW-Hr)1,242,000529,200712,800
Energy Cost$161,460$68,796$92,664
Maintenance Cost$18,000$4,536$13,464
Total Operating Cost$179,460$73,332$106,128
Payback18 Months
Environmental Impact
Carbon Dioxide Emissions972 Tons414 Tons558 Tons

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