Indeed, by the end of 2007, more than 26.5 million rural households were using household biogas digesters, thereby avoiding CO2 emissions by 44 million tons.
So verwendeten Ende 2007 über 26,5 Millionen der ländlichen Haushalte eigene Biogasanlagen und verminderten so den CO2-Ausstoß um 44 Millionen Tonnen.