where the company found temperatures are too high for LEDs to function

All external signs at the Loughborough store, as well as lighting on the sales floor and in staff areas, feature LED linear high bay light. Meanwhile, the store's cold rooms, fridges and freezers are also lit by LEDs. The only part of the store not to feature the cutting-edge technology is the bakery oven, where the company found temperatures are too high for LEDs to function.

Emmily lander, environmental programme manager at Tesco, said that if the store proves effective at delivering promised energy savings, the company could deploy LEDs across its 2,700 UK stores and incorporate them into its new-build programme. "If this delivers the energy savings we have estimated, it is likely that we would replicate this lighting system at other stores." she said.

Tesco has a target of becoming carbon neutral by 2050 and has opened a string of flagship "Zero Carbon" stores in Cambridgeshire, Lincolnshire, Powys, and Dublin to trial new energy efficient technology since 2009. Its latest Zero Carbon store opened in Cefn Mawr near Wrexham in March.

The U.S. Department of Energy's Municipal Solid-State Street Lighting Consortium has released a draft Model Specification for Adaptive Control and Remote Monitoring of LED Roadway Luminaires. The draft specification is posted online for public review and comment by Consortium members, manufacturers, and other interested lighting professionals.

The estimated 26.5 million streetlights in the U.S. consume as much electricity each year as 1.9 million households, and generate greenhouse gas emissions equal to that produced by 2.6 million cars. Switching these streetlights to LED high bay light can save energy and money, and incorporating remote monitoring and adaptive lighting control systems can increase those savings substantially.

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