Total generation rose 8.8 percent to 2,956 GigaWatt hours (millions of units) indicating strong demand in the quarter.
State-run Ceylon Electricity Board's own hydro generation fell 70 percent to just 475 GWh in the period from 1,625 a year earlier.
Thermal generation rose to 958 GWh from 298 a year earlier. The CEB now also generates power from coal in addition to furnace oil and diesel.
Power generated by private producers rose 91 percent to 1,524 GWh in the period. Private producers mainly use furnace oil and diesel.
Non-conventional renewable energy fell to 12 GWh from 15.5GWh in the first quarter. In dry periods small hydro power generation also falls.
In the month of March, power generation up was 5.6 percent to 1,044GWh from a year earlier.
CEB's own thermal generation was up 149 percent to 219GWh. Private power generation was up 42.3 percent to 518GWh.
Sri Lanka's thermal power generation picked up sharply from the second quarter of 2011 and higher levels of credit taken to finance energy subsidies ultimately triggered a currency depreciation from 110 to 130 rupees to the US dollar.
In February 2012, energy prices were raised but petroleum minister Susil Premajayantha has told parliament that the petroleum utility has run up debt of 60 billion rupees by end May 2012 due to subsidized furnace oil sales for power.
Global energy prices have since started to ease, amid credit trouble in reserve currency countries.
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