An employee works on an excavator at storing fuel composed of wood chips to be used for the UEM (Usine d'Electricité de Metz) biomass plant in Metz, eastern France, on January 24, 2013. This thermal power plant, coal-fired, gas and biomass, provides electricity and heat to Metz and to the surrounding towns.  AFP PHOTO / JEAN-CHRISTOPHE  VERHAEGEN        (Photo credit should read JEAN-CHRISTOPHE VERHAEGEN/AFP/Getty Images)