There will also be a 20 percent fuel surcharge on the total bill, except for low income households.
The combined tariff and surcharge will increase electricity prices by around 30 percent and could be applicable from next month.
The government has been resisting a price increase because of the possible political fallout despite the CEB’s chronic financial problems from selling power below cost.
New electricity tariff proposals are before a cabinet appointed subcommittee on controlling the cost of living headed by Sri Lanka's prime minister which is expected to make a decision this month.
Sri Lankan electricity tariffs, which are some of the highest in Asia, are grouped in three categories, domestic, industrial and commercial.
Seneviratne says industrial and domestic sector tariffs will see t