Transport for London is introducing Harvard's LeafNut system as part of a massive overhaul of its street lighting.
TfL says it's the largest ever single investment in London's street lighting history.
There are two main parts of the programme. The first is the introduction of Harvard's LeafNut as its central management system. The control system will be used to align lighting with traffic flows and road usage at different times of night.
The second is updating 35,000 of its 52,000 street lights with LEDs by 2016, with more LED technology for the majority of street lights rolled out over the coming decade.
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The majority of Transport for London's conventional street lighting is to be replaced with LED technology over the next decade
It's hoped the system will lead to a 40 per cent reduction in energy use, save 1.85 million a year and cut CO2 emissions by 9,700 tonnes per year.
Dana Skelley, director of asset management at TfL, said: "The performance and cost effectiveness of energy-efficient lighting has improved considerably over the last few years.
"Our aim is to provide assets fit for the future and this programme to upgrade lighting on the Capital's busiest roads is a simple, yet hugely effective way to not only reduce carbon emissions but to also reduce costs whilst providing better lighting of our road network."
