A major lighting upgrade in Canary Wharf has made the estate greener and saved its owner £400,000 a year.

Canary Wharf Group (CWG) has upgraded Canada Place, Jubilee Place and Cabot Place malls and its car parks with a light-emitting diode (LED) system.

Sustainability company Minimise Energy provided and installed the products, which will save an estimated 3.7million kwh of energy each year – enough to light 5,140 homes in the UK.

The upgrade also means 1,951 fewer tonnes of CO2 will be emitted to light Canary Wharf’s malls in 12 months.

In total, 9,260 light fittings were replaced as well as a 5.3km strip of lighting.

CWG said the installation of the LEDs was also intended to enhance the malls’ architectural features.

The group’s sustainability manager Martin Gettings said: “The malls on our estate are among the busiest in the UK.

“We only procure energy from renewable sources, and we are committed to ensuring our operations, people and developments impact as little as possible on the environment.

“Our overall aim is to make sustainability real in everything that we do.

“Achievements like this contribute significantly towards these goals and we remain committed to long-term improvements against all our sustainability targets.”