Shares in power companies fell after exit polls showed victory for Aam Aadmi Party in Delhi State elections.
Aam Aadmi Party is likely to win 38 seats in the 70-member Delhi Assembly.
AAP had cut power tariffs during its earlier stint at Delhi. Tata Power Co Ltd shares fell 4.4 per cent, while Reliance Infrastructure was down 3.1 per cent. Tata Power gets almost fifth of its revenues from Delhi, analysts say.