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Tons of emissions CO₂

LED comprehensive upgrading of the public lighting - Stage 1

Award Smart LED CITY YEAR 2016 - Central and Eastern Europe

65 %
531.557 kWh
106.311 kg CO₂
8 years 8 months
115.000 €


  • LED lamp Philips Iridium / 21-83W
  • Philips LED lamp Luma 1 / 60W
  • LED luminaires PHILIPS Iridium 3. generation
  • Correlated coulour temperature (CCT 3000K) - warm white
  • Colour rendering index (CRI 80+)
  • Wireless control system of luminaires CITYTOUCH
  • Reconstruction of switchgears
  • Reconstruction of booms
  • Reconstruction of poles
  • Reconstruction of open-wire line
  • Illuminance of crosswalks

Initial type of lighting

    • High pressure sodium lamp 1x70W-250W
    • High-pressure metal halide lamp 1x100W-150W
    • Compact fluorescent 1x36W-72W
    • No control system of luminaires
    • Switchgears are not synchronized
    • High failure rate of switchgears and luminaires
    • Poles of public lighting are not stabile
    • Luminaires and light sources are over their operating life
    • Does not meet STN (Slovak technical norm) criteria
    • Some crosswalks are not illuminated
    • Low colour rendering index (CRI)

The results

Upgraded LED lighting system consumes 65 % less power than the original lighting system 115.000 € yearly!

Thanks to economical LED technology, we lighten the environment by more than 106.311 kg emissions CO₂ yearly, which represents the volume of emissions that has to be absorbed 5315 mature trees.

Return of investment achieved 8 years 8 months.