Exhibit 4.23  Translation
 SUPPLEMENTARY AGREEMENT II
TO
POLYSILICON SUPPLY CONTRACT
 
          
  
 
    
    This portion of the Supplementary Agreement (II) to the Polysilicon Supply Contract
has been omitted and filed separately with the Securities and Exchange Commission, pursuant to
Rule 24b-2 under the Securities Exchange Act of 1934.  1




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   
   
 
    
    This portion of the Supplementary Agreement (II) to the Polysilicon Supply Contract
has been omitted and filed separately with the Securities and Exchange Commission, pursuant to
Rule 24b-2 under the Securities Exchange Act of 1934.  2




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##### 



rd National Standard of the Peoples Republic of China
Regarding Solar Grade Polysilicon (Draft Submitted for Review and Approval) nd National Standard of the Peoples Republic of China Regarding Solar Grade
Polysilicon (Draft Submitted for Review and Approval) st National Standard of the Peoples Republic of China Regarding Solar Grade Polysilicon (Draft
Submitted for Review and Approval)
 th
 
 
      
 
    
    This portion of the Supplementary Agreement (II) to the Polysilicon Supply Contract
has been omitted and filed separately with the Securities and Exchange Commission, pursuant to
Rule 24b-2 under the Securities Exchange Act of 1934.  3




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##### 



Party A:
    
    Jiangsu Zhongneng
Polysilicon Technology Development
Co., Ltd. [Sealed]
    
    Party B:
    
    Changzhou Trina Solar
Energy Co., Ltd. [Sealed]Authorized Representative: /s/
    
    Authorized Representative: /s/Date: August 24, 2009
    
    Date: August 24, 2009
  4




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Exhibit B-1-1
 Original Contract*
 Year
    
    2009
    
    
    2010
    
    
    2011
    
    
    2012
    
    
    2013
    
    
    2014
    
    
    2015
    
    
    TotalPolysilicon (Ton)
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    Unit Price of
Polysilicon (RMB
10,000/Ton)
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    Amount (RMB 10,000)
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    Quantity of
Monocrystalline Wafers
(10,000 Pieces)
    
    
    
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    Unit Price of
Monocrystalline Wafers
(RMB/Piece)
    
    
    
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    Amount (RMB 10,000)
    
    
    
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    Original Contract Price
(RMB 10,000)
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    3,039,764
  Amended by This Supplementary Agreement II
 Differenceto OriginalContractYear
    
    2009-4Q
    
    
    2010
    
    
    2011
    
    
    2012
    
    
    2013
    
    
    2014
    
    
    2015
    
    
    Total
    
    
    PricePolysilicon (Ton)
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    Unit Price of Polysilicon
(RMB 10,000/Ton)
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    Amount (RMB 10,000)
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    Quantity of
Monocrystalline Wafers
(10,000 Pieces)
    
    
    
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    Unit Price of
Monocrystalline Wafers
(RMB/Piece)
    
    
    
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    Amount (RMB 10,000)
    
    
    
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    Amended Contract Price
(RMB 10,000)
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    1,944,430
    
    
    
    1,095,334
  Polysilicon:
    
    RMB [****]Wafers
    
    RMB [****]Total Price Difference:
    
    RMB 10,953.34 million
 
 
    
    This portion of the Supplementary Agreement (II) to the Polysilicon Supply Contract
has been omitted and filed separately with the Securities and Exchange Commission, pursuant to
Rule 24b-2 under the Securities Exchange Act of 1934.  5




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##### 



Supplementary Supply Plan for the Period from Year 2016 to Year 2020 as Amended by the
Supplementary Agreement II
 Year
    
    2016
    
    
    2017
    
    
    2018
    
    
    2019
    
    
    2020
    
    
    TotalPolysilicon (Ton)
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    Unit Price of Polysilicon
(RMB 10,000/Ton)
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    Amount (RMB 10,000)
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    Quantity of
Monocrystalline Wafers
(10,000 Pieces)
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    Unit Price of
Monocrystalline Wafers
(RMB/Piece)
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    Amount (RMB 10,000)
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    
    
    
    [****]
    Amended Contract Price
(RMB 10,000)
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    1,095,333
    
    
    
    (0)
  6




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4. Specifications
    Graded Indices for Solar Grade Polysilicon (1)Item (1)
    
    Grade 1
    
    Grade 2
    
    Grade 3Base Phosphor Resistivity (Ω·cm)
    
    > 100
    
    > 40
    
    > 20Base Boron Resistivity (Ω·cm)
    
    > 500
    
    > 200
    
    > 100Minority Carrier Lifetime (μs)
    
    > 100
    
    > 50
    
    > 30Oxygen Density (atoms/cm3)
    
    < 1.0×1017
    
    < 1.0×1017
    
    < 1.5×1017Carbon Density (atoms/cm3)
    
    < 2.5×1016
    
    < 4.0×1016
    
    < 4.5×1016
 Graded Indices for Solar Grade Polysilicon (2)Item (2)
    
    Grade 1
    
    Grade 2
    
    Grade 3Donor Impurity Density (ppba)
    
    < 1.5
    
    < 3.76
    
    < 7.74Acceptor Impurity Density (ppba)
    
    < 0.5
    
    < 1.3
    
    < 2.7Oxygen Density (atoms/cm3)
    
    < 1.0×1017
    
    < 1.0×1017
    
    < 1.5×1017Carbon Density (atoms/cm3)
    
    < 2.5×1016
    
    < 4.0×1016
    
    < 4.5×1016Basic Metal Impurity(ppmw)
    
    Fe, Cr, Ni, Cu, Zn,
TMI (total metal
impurities): < 0.05
    
    Fe, Cr, Ni, Cu, Zn,
TMI (total metal
impurities): < 0.1
    
    Fe, Cr, Ni, Cu, Zn,
TMI (total metal
impurities): < 0.2
 Note:
    
    
    1.
    
    
    Inspection of basic metal impurities may be carried out by the secondary ion mass spectrum, plasma mass spectrum
or neutron-activation analysis, which shall be chosen by both parties through negotiation.2.
    
    
    Products in Grade 3 are mainly used for production of multicrystalline ingots.3.
    
    
    Products of each grade shall meet all requirements in the specific grade. If any index in the specific grade
cannot be met, the products shall be degraded to the lower one.
    
  7




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