LEDs: keeping the lights on and bills down

Today’s blog is by Councillor Don Alexander, Cabinet Member for Transport

Street lighting is something that some of us take for granted, but it’s critically important for our safety and quality of life. Technology moves on and an exciting new opportunity has now presented itself.

We will be replacing 27,000 of our now outdated street lights with Light-Emitting Diodes (LEDs) and will operate them through a new Central Management System (CMS). The LED and CMS combination will reduce electricity consumption by 45 to 50%, saving taxpayers around £1.8 million each year and reducing Bristol’s carbon emissions by a stunning 17,741 tonnes over a decade. In addition, this system requires less maintenance so it will reduce the number of vehicle trips around the city with their associated costs and pollution.

I am really excited about this project, as given the climate emergency and with energy bills rising across the UK, it has never been more important to find ways to reduce our energy consumption across the city. 

The Central Management System provides remote control monitoring and energy measurement over a wireless interface, giving it the ability to dim or brighten individual areas of the city. Examples of the possible benefits of this could be improved women’s safety, more appropriate lighting for wildlife and reduced light pollution.

The variety of lamp posts, which are a welcome feature of our historic streetscape, has required some technical work to allow the LEDs to be used on the more traditional models. As LEDs use less energy, this creates new possibilities for our ongoing work on devising approaches to on-street charging models for electric vehicles, more of which will be announced soon.

Making an upfront investment to speed up our switch over to LED street lighting is a simple way to make energy savings. This is good news for the environment and will dramatically reduce our energy bills, freeing up future resources to be invested in other frontline services. Using smart city technology, this project which will make sure our street lighting network is responsive, reliable and fit for purpose for years to come.

The street lighting replacement programme will be completed over three years at a cost of £12 million, which will soon be recovered at current energy prices.