Monitor just how green the London Olympics are

Those with a particular interest in the green credentials of the London Olympics can monitor the energy use of the events thanks to a tool that has been deployed at some of the most high-profile venues.

EDF has unveiled the Visi system – a new real-time energy monitor – which has been installed at the Olympic Stadium, the Velodrome, the basketball arena and the acquatics centre, as well as Tower Bridge and the London Eye.

The technology will track the energy used at the venues in real time, although in the Olympic Stadium it will only monitor energy used by lighting systems. The data will then be reported through screens at the venues, and a Power the Games Live website and smartphone app.