Why did The City retrofit residential streetlights with new lower wattage, flat lens fixtures?
The streetlight system is Calgary’s single largest electricity consumer. When energy prices reached an all-time high in January 2001, The City needed to find a way to reduce the cost of operating the streetlight system. Lower wattage fixtures were installed to consume less electricity. and help keep operating costs down while still meeting IESNA guidelines for pedestrian and vehicular movements. Before the launch of the EnviroSmart Streetlight Retrofit in 2002, satellite images showed that Calgary lost up to ten times the amount of light energy into space compared to other cities such as Vancouver, Victoria, Seattle and Portland. An estimated one-third of the light from the old-style streetlights ended up lighting up the sky. In order for a streetlight to be included in the city-wide EnviroSmart retrofit between 2002 and 2004, the location had to meet IESNA (Illuminating Engineering Society of North America) guidelines for appropriate municipal lighting levels, visibility levels, and u
Related Questions
- If retrofitting streetlights to lower wattage is not a safety concern, why are parks and playgrounds excluded from the retrofit project?
- Why is The City of Calgary retrofitting residential streetlights with new lower wattage, flat lens fixtures?
- Why did The City retrofit residential streetlights with new lower wattage, flat lens fixtures?
