Thermal power output was up 19.7% on the year to 14.16 billion KWh, while hydropower production increased 3% to 8.14 billion KWh, the statistics institute INS said in a statement.
Nuclear power production advanced 2.7% on the year to 4.6 billion KWh in January to May.
The country’s primary energy resources increased 5.8% to 14.7 million tons of oil equivalent from the first five month of 2010, the data showed.
Electric energy resources rose 10.1% on the year to 27.2 billion kilowatts hour in January to May, fueled by an 11.1% increase in production.
Final power consumption reached 22.2 billion KWh, up 5.1% from the same period of 2010. Public illumination fell 12.4% on the year, but household consumption rose 2.3%.
Total power imports increased 6.5% on the year to 4.9 billion tons of oil equivalent.