)
-Discoms say 80% of capital's electricity tariff pertains to cost of bulk power purchased from state-run generating firms
-Discoms say bulk purchases are long term contracts over which they have little control
-In the past 10 years, the bulk power cost increased 300% from Rs.1.42 per unit to Rs.5.71 per unit
-But power tariff increased only 65% in 10 years from Rs.3.06 per unit to Rs.6.55 per unit
-At the same time, distribution losses came down from 57% to 17%
-Discoms say they still have accumulated losses of Rs.20,000 crore
-Aam Aadmi Party says certain tariff hikes in the past were unjustified
-It feels there is scope to reduce tariff by 50%
