Compact Fluorescent and Metal Halide Street Lighting Trial
WA Local Government Association
ENERGY EFFICIENT STREET LIGHTING CASE STUDY
Context
In 2005, the WA Local Government Association, the WA state government along with Sage Consulting Engineers commenced a project in three suburbs of Western Australia - Midvale, Mosman Park and Subiaco - monitoring new street lighting installations as part of their ongoing work to examine street lighting in Western Australia in terms of greenhouse gas emissions and community security.
The project continued through 2006, monitoring the results of the pilot projects and aiming to encourage local government to adopt energy efficient street lighting in Western Australia.
Implementation
In Midvale and Mosman Park, where street lighting is Western Power owned, mercury vapour lamps were replaced with 70W metal halide lamps with an aim to improve the standard of lighting and to increase energy efficiency. To further reduce greenhouse gas emissions, reduce energy and improve the lighting standard, Mosman Park also installed 70W high pressure sodium lamps on distributor roads. In addition, Mosman Park also installed 42W compact fluorescent lamps in laneways that had previously been unlit.
The street lighting in Subiaco is owned by the City and a previous attempt to replace the mercury vapour lamps in Subiaco with 70W high pressure sodium lamps showed an insignificant reduction in energy so Subiaco replaced many mercury vapour lamps with 42W compact fluorescent lamps.
The electronic ballasts used for 42W compact fluorescent lamps were found to be susceptible to moisture and need housings with appropriate Ingress Protection ratings. 42W CFL's also need surge protection to protect the electronic ballasts.
Benefits
Results to date show that in all three cases, lighting has improved. The quality of lighting in each area has increased with better lighting levels, better colour, less stray light combined with lower glare - particularly in Subiaco, and better reliability. In Mosman Park and Subiaco, the improvement over previously substandard lighting has meant an increase in energy use, but improved energy efficiency.
In Midvale, street lighting has improved from poor to compliant with AS 11586 with 14% energy and greenhouse gas reduction.
Further benefits arising from the project include a decrease in the risk of crime, better road safety and enhanced amenity to the community. The project includes delivery of three workshops to provide information to local government on ongoing developments of the project. Two of the three workshops have been conducted and the Final Workshop will be conducted early in 2007.
Contacts
Mike Sage
Director, Sage Consulting Engineers
203 Railway Road
Subiaco WA 6008
Email: mike.msage@iinet.net.au
Phone: 08 9388 9745
Fax: 08 93889256
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