LED street lighting
The following information is from the GDC.
In Gloucestershire we have around 60,000 streetlights which consume around 20.5GWh of power each year at a cost of £2 million. Electricity costs are rising sharply, and we are spending more and more just to keep the street lights on in the county.
In the past we have been able to offset the increasing energy bill by dimming street lighting on main roads, rural part-night lighting in 70% of parishes and small scale LED (Light Emitting Diode) street lighting installations.
The council has adopted a Carbon Reduction Target of 60% by 2020/21 when compared with our 2006/07 figure, which will only be achievable with significant reductions in the energy consumption of our street lighting.
In August 2014, Skanska were appointed to deliver Gloucestershire’s LED lighting scheme and undertake the general maintenance of the council’s street lighting, lit signs and bollards. By making the decision to adopt LED street lights now the council anticipate financial savings of about £17 million over the next 12 years. Work to roll out 55,000 LED street lights across the county began in November 2015 and is expected to take three and a half years to complete.
LED street lighting technology is now commonplace, and manufacturers have invested heavily in developing this technology. It is now considered to be the next step in street lighting technology by authorities up and down the country, with several large schemes underway.
The benefits of using LED street lighting include:
- Up to 70% reduction in energy usage
- Use of central management system to individually manage each of the 55,000 street lights
- Lights can be dimmed to any level of light output with a corresponding decrease in energy use (by contrast the dimming of conventional street lighting to 50% on traffic routes has only reduced energy use by 35%)
- Low maintenance – 70% reduction in maintenance costs
- Better quality of light (more like daylight)
- Fewer faults and targeted maintenance using central management system
- Decreased light pollution (because of the focused lighting)
Investment in LED street lighting was approved as part of the Council Budget for 2014/15 to 2016/17 by the county council on 26 February 2014. At the cabinet meeting on 23 July 2014 approval was given for the council to procure a 12 year contract to replace our street lighting with LED technology, and to provide maintenance.
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