The Sunday Times newspaper quoting a letter written by CEB General Manager Shavi Fernando said CEB was estimated to have lost 8.0 billion rupees in January, 8.4 billion in February and 7.9 billion in March.
The CEB was seeking "more liquidity" and senior officers have been asked to tighten collections from customers including state institutions that have large unpaid bills.
CEB's thermal power generation bill has shot up amid a drought over the past few months.
Inter monsoonal rains usually come in March-April followed by the main South Western monsoon from May to August and later the North East monsoon from November. But the 2013 North East monsoon and inter-monsoonal rains this year have been weak.
2014 is also expected to be a so-called 'el Nino' year, where exceptional drought conditions are seen in several parts of the world.
State energy enterprises that subsidize energy do not pass on the actual cost of imported energy to their customers have in the past borrowed money saved by the people in state banks to cover their operational losses.
The sudden surge in unproductive credit requires an interest rate increase to either reduce loans taken by other customers for employment generating activities.
A rate hike also increases savings which in turn curbs non-energy consumption or both, economic analysts have pointed out.
But in developing countries like India and Sri Lanka, a state intervention to block market pricing of energy, is also followed by a state intervention by the Central Bank to resist an interest rates hike with money printing.
The expanded demand then leads to a surge in imports and exchange rate pressure, which either results in foreign reserves losses if the exchange rate is defended or a depreciation of the currency or both.
A rise in energy prices to reflect the actual cost, slashes an equal amount of spending power from customers of the utilities (who now have to reduce their non-energy purchases by an equal amount) keeping imports, the exchange rate and economy stable.
Market pricing energy can also reduce the need for interest rates to rise.
There was a 57 billion rupee increase in credit to state enterprises in December 2013, reversing a steady pay down of debt taken earlier and in January, there was no change in commercial bank lending to SOEs.
The CEB's credit backed energy subsidies, which were also financed by credit backed losses in Ceylon Petroleum Corporation in 2011 was the key trigger for the 2011/2012 balance of payments crisis, which made the rupee fall from 110 to the US dollars to 130.
Sri Lanka's private sector credit is now low as the country is still recovering from the last balance of payments crisis.
Analysts have said that the rupee is now also under pressure from dollar purchases by the Central Bank which has created large volumes of excess liquidity in money markets which were not permanently mopped up.