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1938年,保加利亚的电站装机容量总共才13万千瓦,人均年耗电量为42度。按照这一指标,保加利亚属欧洲最落后的地区之一。劣质褐煤是保加利亚的主要能源。其储量相当丰富,若折合成标准燃料,则占煤的总储量的82％。无烟煤和块煤的储量少,基本上无石油和天然气。褐煤集中在东马里查、西马里查及索非亚煤田。鲍鲍夫多利斯基煤田的煤,其热效率为2600～3110大卡/公斤。煤产量逐年增长:1945年为356.3万吨;1955年为1004.7万吨;1965年为2621.2万吨;1975年为2892万吨:1982年为3351.2万吨。
In 1938, Bulgaria had a total installed power capacity of 130,000 kilowatts and a per capita annual electricity consumption of 42 degrees. According to this indicator, Bulgaria is one of the most backward areas in Europe. Poor lignite is Bulgaria’s main energy source. Its reserves are quite rich, if converted into a standard fuel, accounting for 82% of the total reserves of coal. Anthracite and lump coal reserves are small, basically free of oil and natural gas. Lignite is concentrated in Eastern Mali, Western Mali and Sofia coal fields. The coal of the Bobadovsky coalfield has a thermal efficiency of 2600-3110 kcal / kg. Coal production has increased year by year: 3.565 million tons in 1945; 10.047 million tons in 1955; 26.212 million tons in 1965; 28.92 million tons in 1975: 33.512 million tons in 1982.