Shares of Sensex constituent NTPC, which tanked over 11 per cent, led power sector lower on worries the proposed electricity tariff regulation would hit earnings.
Bluechips, including ICICI Bank, L&T and BHEL, slid 3-4 per cent after market participants book profits in the backdrop of 618-point surge in Sensex in the previous three days. However, rise in IT stocks capped the index's losses.
Trading sentiment was also dampened on a weakening Asian trend and lower opening in Europe as reports said Chinese industrial production rose less-than-estimated last month.
Apart from these factors, markets also saw selling pressure after Fitch expressed fears that the defeat of Congress in four of the five state assembly polls could lead to higher fiscal deficit target as the government would be constrained to curb expenditure.
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In PSU power shares, besides NTPC, NHPC, Power Grid and SJVN fell in 1-3 per cent range. Private sector peers, Reliance Power and Tata Power also logged losses.
"CERC has announced its draft tariff regulations for FY15-19...We see huge negative impact for NTPC mainly from shift of incentives to PLF from PAF and no tax grossing up of RoE. However, we see lower impact for PGCIL, NHPC and SJVN," said Amit Golchha, Research Analyst, Emkay Global Financial Services in a report.