(Xinhua News Agency) -- The National Development and Reform Commission (NDRC) recently warned that most parts of China will face relatively tight supply of electricity in 2011, especially in this sum mer.

During summer, the peak season for power use, China's eastern and southern areas as well as North China will largely suffer from electricity shortage.

The short supply of electricity has already taken on in parts of China. Power coal stocks in Hunan and Hubei province once dropped to the critical level of four days this month due to delayed raining sea son, which led to short supply of hydropower and had to be remedied by thermal power, said Xue Jing, head of the department of statistics of China Electricity Council.

According to information released on official website of NDRC, major water resources for hydropower generation, including Qiantang Ri ver, Min River, Han River, and Xiang River on so on, lacks 30-70 perce nt of water compared to normal level in previous years.

In contrast with tight power supply, China's social electricity consumption keeps rising.

According to statistics by the National Energy Administration, China's social electricity consumption rose 13.41 percent on year to 3 88.8 billion kilowatt hours in March, and accumulated to 1.09 trillion kilowatt hours in the first quarter, up 12.72 percent on year.

Analysts believed that the 12.72 percent growth is relatively f aster compared to the growths in the past three years.

In face of the short power supply and robust power demand, NDRC demanded local government to intensify monitoring over power coal sto cks and operation of thermal power plants. Besides, NDRC asked local government to prepare a plan for orderly power consumption before the end of May.

In addition, the NDRC raised feed-in tariffs of thermal power in 16 provinces by average 1.2 fen/kilowatt hour.