In the Green pavilion, Sierra wireless and Philips CityTouch demonstrated their cutting-edge lighting system designed to save cities energy -- and money.

The system connects each individual street light in a city to the Internet via 2G, 3G and 4G networks. It gives city authorities the power to monitor and manage individual street lamps, adjusting them for certain weather conditions, and setting custom lighting patterns -- dimming lights in the business district at the weekend, for example.

The system connects each individual street light in a city to the Internet via 2G, 3G and 4G networks. It gives city authorities the power to monitor and manage individual street lamps, adjusting them for certain weather conditions, and setting custom lighting patterns -- dimming lights in the business district at the weekend, for example.

"Now it's connected, it allows the government to fully control the lighting in their city," Sierra Wireless VP Olivier Beaujard told Quest. "Not only can you switch them on and off but also program them manually according to your schedule. You can put lights where you need them during accidents and bad weather conditions.

"In the future, the city will be able to know, in real time, how much energy they consume. They can really control their consumption and plan for future usage."