The protesters were demanding that their electricity connections be restored after they were disconnected due to alleged non-payment of bills, sources said.
A heavy crowd of farmers led by Kissan Sangharsh Committee today staged a dharna at the Punjab State Power Corporation offices and detained its employees as part of their protest.
However, the protest led to a heavy police force arriving on the spot which then resorted to a lathicharge to disperse the farmers.
More than a dozen farmers were injured in the melee, sources said, adding that some women protesters also pelted stones at the police.