Exhibit 4.74
 SUPPLEMENTAL AGREEMENT
  THE POWER PURCHASE AND SALE CONTRACT
FOR THE YEAR OF 2010
 (Contract Number: De Dian Si 2010-009)
 Husahe Cascade III&VI Power Station and Mangxian Power Station
 DEHONG POWER SUPPLY CO., LTD.
 March 3, 2010
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Supplemental Agreement on the Power Purchase and sale
Contract for the year of 2010
 Agreement
 I.
    
    The Parties hereby determine that the annual contractual on-grid electricity output for the
year of 2010 is 49,370,000 kwh.
 1.
    
    Considering the annual overhaul plan of the generator units and the regularity of
power supply and demand, the contractual on-grid electricity output allocated for each
month is set out as follows:
 January:
    
    1,520,000
kwh;February:
    
    1,269,000
kwh;March:
    
    1,000,000
kwh;April:
    
    700,000
kwh;May:
    
    731,000
kwh;June:
    
    5,000,000
kwh;July:
    
    7,000,000
kwh;August:
    
    8,000,000
kwh;September:
    
    8,000,000
kwh;October:
    
    7,210,000
kwh;November:
    
    5,500,000
kwh;December:
    
    3,800,000
kwh;
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2.
    
    On-grid Tariff during Commercial Operation PeriodUpon being approved by the competent price regulatory authority of the local government,
the on-grid tariff for the units of the Power Plant during the
commercial operation period shall be implemented according to [2008] No.611 document; in
case of any change to the governmental tariff policy, then the new policy shall prevail.
The reactive compensation tariff shall be: RMB 0.02/kwh.3.
    
    Under the normal production condition of the silicon smelting enterprises of our
prefecture, the Power Purchaser shall ensure eighty five percent (85%) of the
contractual electricity output of the Power Station could be dispatched out. In case of
abnormal production condition of the silicon smelting enterprises of our prefecture, the
dispatching shall be carried out on the principle of the same proportion for the same
installed capacity. The surplus electricity output generated not in compliance with the
dispatching instructions shall be deemed as invalid electricity output and shall not be
settled.4.
    
    In August of each year after having concluded the Power Purchase and Sale
Contract, after friendly consultations, the Parties may appropriately adjust the annual
contractual on-grid electricity output of that year and the contractual on-grid
electricity output for the rest months based on the actual situation of power supply and
demand, and reach a written agreement; prior to the end of November of each year, the
Parties shall consult with each other to determine the annual contractual on-grid
electricity output for the next year, and enter into a Power Purchase and Sale Contract
for the next year before the end of December.5.
    
    The Power Seller shall strictly comply with the dispatching instructions and
provide with the production and operation data upon the request of the Power Purchaser,
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such as: the daily electricity output, the overhaul plan, etc.
 II.
    
    Equivalent Available FactorThe condition precedent for the Power Purchaser to purchase from the Power Seller the
electricity output not less than the annual contractual on-grid electricity output as
prescribed in this Agreement is that the planned equivalent available factor of the generator
units determined in accordance with the annual contractual on-grid electricity output of that
year shall reach 30% or above. In the event the actual equivalent available factor of
the generator units fails to reach the aforesaid requirements, the Power Purchaser shall be
entitled to reduce its annual contractual on-grid electricity output corresponding to the
deficient proportion of the equivalent available factor.III.
    
    The valid term of this Agreement shall be from January 1, 2010 to December 31, 2010.
 This Agreement shall have the same legal effect as the Power Purchase and Sale Contract. This
Agreement comprises four (4) pages, and shall be signed in four (4) counterparts. Each
Party shall hold one (1), and two (2) counterparts shall be filed with the local
power regulatory authority for record.
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Power Purchaser : Dehong Power Supply Co., Ltd.
   /s/ Cun Shijian
 Power Seller: Yingjiang County Qinrui Husahe Power Co, Ltd.
   /s/ Yan Xinshan
 March 31, 2010
 Mangshi City
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