supporting indicators low carbon economy 14 it is estimated that 158 million tonnes of mtc were emitted as dioxide during 2004 emissions have fallen by 4 since 1990 power stations are the largest single source however if from re allocated to sector consuming electricity industrial dominates around 18 1 2 out 47 can be industry 15 results domestic consumption and 12 comes service a further transport 27 set below explain in more detail trends shown key progress date described 2005 annual report on energy white paper 0 10 20 30 40 50 60 70 1995 pr o v mi l li t ne s f car bon 5 tr nsport combustion ipcc basis figures dti