The cumulative increase in the power bills is estimated to come to more than 50 per cent in the bills for January. The charges for the current month will incorporate a further 12 per cent increase in the price of electricity.

The Ministry of Water and Power on Saturday forwarded a summary to the prime minister for a six per cent increase in the electricity tariff to be implemented from Oct 1. The second and third phases of power tariff hike will be implemented in January and April.