More than 30% savings with dimming
Lighting up a city’s streets is typically the single most significant energy expenditure of the city. And only few areas require the same amount of maintenance and operation resources.
With centralized control, savings of 8-10% can be achieved, but the real savings occur when the city switches to dimming. Studies and numerous experiences show that savings of 30% and above are reached, giving a pay back time of just a few years.
Follow this link to learn more about dimming technologies by e.g. power reduction and electronic ballasts.
October 7th, 2007 at 5:04 am
Thank you for sharing!
October 8th, 2007 at 7:55 pm
In Amplex we have the same experience in Energy savings. By switching from a decentralised system (i.e. a control cabinet with timer/photocell) to a centralised system typically provides around 8% from energy savings - simply because the citizens only complains when the light is turned on too late, they never complains when light is turned on too early.
For dimming we have experienced savings over 40%, but this is in a solution where we dim from the control cabinet - a solution lot cheaper than installing equipment in each fixture. This seems like a solution where it is very hard to get a decent ROI.