In this photo taken on Monday, May 11, 2009, pigs are seen in front of a biogas plant in Sterksel, south Netherlands. The 2,700 pigs on the farm that John Horrevorts manages yield more than ham and bacon. A biogas plant makes enough electricity from their waste to run the farm. The farm uses the electricity it needs and feeds the rest into the national grid, for which the government pays up to Û177 ($238) per megawatt as a green energy subsidy. (AP Photo/Ermindo Armino)AP - The 2,700 pigs on the farm that John Horrevorts manages yield more than ham and bacon. A biogas plant makes enough electricity from their waste to run the farm and feeds extra wattage into the Dutch national grid.