青海是全国太阳能资源最丰富的省区之一,日照时间长,日照率为60～80%。青海年平均气温低,采暖期长达6～8个月。由于常规能源,尤其是农村能源紧张,长期以来,有近半数的农村依靠柴草等生物质能以最低的标准维持过冬,大部分农户因缺少燃 Qinghai is one of the provinces with the most abundant solar energy resources in the country, with long sunshine hours and a sunshine rate of 60 to 80%. The average annual temperature in Qinghai is low, and the heating period is as long as 6 to 8 months. Due to the shortage of conventional energy resources, especially in rural areas, nearly half of the rural communities have been relying on biomass energy such as fireweed to maintain their winters at the lowest standard for a long time. Most of the rural households lack of fuel.