Over 80 years after its opening, Dagenham is still London's largest industrial employer and around 40,000 Ford vehicles – the iconic Ford Transit – are built in the UK each year at the Ford Southampton plant. Ford Dagenham also provides a leading example of the company's sustainability strategy. The most economical internal combustion engines Ford produces are assembled in a plant that generates all its own electricity, from wind power. The Dagenham wind turbines produce 6.7-million kilowatt hours of clean electricity each year – which has avoided over 6,500 tonnes of annual CO2 emissions, since 2004. There are parallels between Henry Ford's success with the Model T, in the early 20th Century and the success of the company today, with the Ford Focus, created for the 21st Century.