Exhibit 4.124

Supplemental Agreement on the Power
Purchase and Sale Contract for the Year of 2011

(Contract Number: De Dian Si 2011-009)

Husahe Cascade III & IV & Mangxian
Power Stations

Dehong Power
Supply Co., Ltd.

December 28, 2010

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Supplemental Agreement on the Power Purchase and Sale Contract for the
Year of 2011

In order to establish a regulated power
supply and utilization order and develop a healthy power supply and utilization
market, according to the installed capacity of the power stations, the
characteristics of the units, the power utilization load conditions of the year
of 2011 and the impact of financial crisis, on the basis of entering into the
Power Purchase and Sale Contract (General Provisions) by and between the power
supplier and the consumer, the Power Purchaser and the Power Seller have
reached the following Supplemental Agreement (this Agreement) through
friendly consultation.

|   |                                                                                                                              |                                                                                                                                                                                              
|-- | ---------------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|I. | The Parties hereby determine that the annual contractual on-grid
 electricity output for the year of 2011 is 65,990,000 kwh.
|   |                                                                                                                              |                                                                                                                                                                                              
|   | 1.                                                                                                                           | Considering the annual overhaul plan of the 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:   | 4,820,000kwh;
| |            |              
| | February:  | 4,260,000kwh;
| |            |              
| | March:     | 2,710,000kwh;
| |            |              
| | April:     | 1,630,000kwh;
| |            |              
| | May:       | 1,310,000kwh;
| |            |              
| | June:      | 2,910,000kwh;
| |            |              
| | July:      | 8,800,000kwh;
| |            |              
| | August:    | 9,770,000kwh;
| |            |              
| | September: | 9,540,000kwh;
| |            |              
| | October:   | 8,790,000kwh;
| |            |              
| | November:  | 6,450,000kwh;
| |            |              
| | December:  | 5,000,000kwh.

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|    |                             |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
|--- | --------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|    | 2.                          | On-grid Tariff during Commercial Operation Period                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|    |                             |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
|    |                             | Upon 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
 the document with the number of De Fa Gai Jia Ge [2010] No. 300; in case of
 any change to the governmental tariff policy, 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 Administrative
 Provisions on the Voltage Quality and Reactive Power of the Power System of
 Yunnan Grid Company and follow the dispatching instructions and provide with
 the production and operation data upon the request of the Power Purchaser,
 such as: the daily electricity output, the overhaul plan, etc.                                                                                                                                                                                                                                                                                           
|    |                             |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
|II. | Equivalent Available Factor

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|                                                                                                                                                                                                                                                                                                                 |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|                                                                                                                                                                                                                                                                                                                 | The 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 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 40% or above. In
 the event the actual equivalent available factor of the generator units fails
 to reach the aforesaid requirement, 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, 2011 to
 December 31, 2011.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|                                                                                                                                                                                                                                                                                                                 |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|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.
|                  |                               
|(Stamp)          

Legal Representative: Yue Zhiqiang

Authorized Proxy:

|              |                                                     
|------------- | ----------------------------------------------------
|Power Seller: | Yingjiang County Qinrui Husahe Hydropower
 Co., Ltd.
|              |                                                     
|(Stamp)      

Legal Representative:

Authorized Proxy:

Signing Date: December 29, 2010

Signing Place: Mangshi

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