Veolia Environmental Services was the other firm fighting to run the incinerator, and whose spokesperson said it believed it was "sympathetic with the local environment and represented a unique opportunity to use the residual waste to provide a secure source of sustainable energy and heat to the neighbouring Tata Steel steelworks - a major source of employment in the area".

BBC: Artist's impression of a Viridor plant in Cardiff

Both Presidents reiterated their belief that a more efficient use of energy, and the use of cleaner and renewable sources and technology are fundamental elements for energy security, which contributes to sustainable economic growth and the protection of the environment.

WHITEHOUSE: President Obama on the United States and Latin America