An impressive 4,400 photovoltaic panels sit on top of the original Victorian structure, which crosses the River Thames, and will reduce carbon emissions by an estimated 511 tonnes per year (equivalent to 89,000 average car journeys) while also providing the station with half of the energy it needs to operate.

The solar panels will generate an estimated 900,000kWh of electricity each year and produces enough energy per day to make almost 80,000 cups of tea.

http://sourceable.net/london-builds-worlds-biggest-solar-bridge/