ORGANIZATION AND PRINCIPAL ACTIVITIES (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
12 Months Ended 12 Months Ended 0 Months Ended
Dec. 31, 2011
item
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2013
ABC
Dec. 31, 2013
Binglangjiang
Dec. 31, 2013
Liyuan
Dec. 31, 2013
Yingchuan
Dec. 31, 2013
Wuliting
Dec. 31, 2013
Jiulongshan
Dec. 31, 2013
CHC HK
Dec. 31, 2013
Wangkeng
Dec. 31, 2013
Banzhu
Dec. 31, 2013
Sunpower
Dec. 31, 2013
Shapulong
Dec. 31, 2013
Ruiyang
Dec. 31, 2013
Zhougongyuan
Dec. 31, 2013
Fujian Huabang
Dec. 31, 2013
Wuyue
Dec. 31, 2013
Husahe
Dec. 31, 2013
Hengda
Dec. 31, 2013
Xineng
Dec. 31, 2013
Xiaopengzu
Dec. 31, 2013
Jinling
Dec. 31, 2013
Dazhaihe
Jan. 25, 2010
Units
Jan. 25, 2010
Units
ADS
Jan. 25, 2010
Units
Warrant
Organization and principal activities                                                      
Issuance of units                                                 6,000,000    
Number of ADS consisted in each unit                                                   1  
Number of warrants consisted in each unit                                                     1
Unit price (in dollars per share)                                                 $ 16.00 $ 14.80 $ 1.20
Number of ordinary shares represented by each ADS 3 3 3                                             3  
Number of ordinary shares that can be purchased by warrant holder                                                     3
Exercise price of warrants (in dollars per share)                                                     $ 15.00
Aggregate gross proceeds yielded from IPO (in dollars)                                                 $ 96,000    
Number of hydroelectric entities acquired 1                                                    
Percentage of ownership       100.00% 100.00% 100.00% 100.00% 100.00% 100.00% 100.00% 100.00% 100.00% 100.00% 100.00% 100.00% 100.00% 100.00% 79.00% 100.00% 100.00% 100.00% 100.00% 100.00% 100.00%