Besides, the Plant Load Factor at thermal plants declined to 65.6 per cent in the 2013-14 fiscal from 69.9 per cent in FY'13, primarily due to backing down of generation units due to low demand from discoms.
The credit rating agency said: "Plant Load Factor levels varied widely and showed a mixed trend across generating stations driven by cost-competitiveness of power generated, extent of fuel availability and availability of PPA, which allows the pass-through of cost in consent with distribution utility."
According to Icra, the dependence on government subsidy for state utilities is likely to increase by 17 per cent to Rs 72,000 crore in 2014-15 compared to last year, thus posing a challenge for the power sector.
"Overall subsidy dependence for FY15 for distribution utilities in the 16 states is estimated to increase to Rs 72,000 crore mainly on account of upward pressure on cost of power supply and continued subsidised nature of tariffs for agriculture consumers," the report said.