Romanian energy output fell 7.6% on the year to 10.57 million tons of oil equivalent in the first six months, due to declining activity in the thermal sector, official data showed Thursday, news agency Mediafax reports.

Thermal energy output dropped 26.4% on the year to 12.14 billion kilowatts hour, the statistics institute INS said.

Hydropower production rose 15.9% to 8.5 billion KWh in the first six months of 2013, while nuclear output was up 3.8% to 5.66 billion KWh.

Wind farm output more than doubled to roughly 2.42 billion KWh, from 1.18 billion KWh in the January-June period last year. Wind farm production covered 8.4% of the first-half electricity output in
Romania .

The country's primary energy resources fell 15.2% on the year to 14.65 million tons of oil equivalent in the first six months of 2013, the data showed.

Electric energy resources were down 6.9% to 29.05 billion KWh, largely due to a 5.8% decline in production.

Romanian final power consumption reached 24.88 billion KWh in the first half, down 7.5% from the same period of 2012. Public illumination fell 9.1% on the year, while household consumption inched down 0.9%.

Electric energy exports declined 12.5% year-on-year to 588.1 million KWh in the January-June period.