(Chinese: 安吉县; pinyin: Ānjí Xiàn) is a county in the prefecture-level city of Huzhou in northwestern Zhejiang province, People's Republic of China, with a population of 461,800 as of the end of 2013. Anji county is well known for its bamboo, containing as it does 60,000 hectares of bamboo groves, with over 40 different species of bamboo. It has been designated a pilot county for ecological and green building construction. Anji is 65 kilometers from Hangzhou. During the 1990s, it took more than two hours to travel to Hangzhou by bus. Poor transportation isolated Anji from the rest of Zhejiang Province, and for many years its economy remained underdeveloped. From 1997 to 2000, highways were built to Hangzhou and Huzhou, and from 2000 to 2002, highways connecting to National Highway G318 were constructed. The provincial highways within its boundary were also widened. Now the highway system traversing the entire boundary has been completed, and it takes less than three hours to reach Shanghai, Nanjing or Suzhou, and less than one hour to get to Hangzhou and Huzhou. Some of Anji's residents have attempted to take the sustainable development road by developing ecology-friendly agriculture, industry and tourism, and building an ecology-friendly city. Tianhuangping Pumped Storage Power Station is located there.