Exhibit 4.91


English Translation of Chinese Language Document





Sales Contract





Contract No.: XS120100197


Signing Place: Jiangning District, Nanjing


Signing Date: undated





The Seller: China Sunergy (Nanjing) Co., Ltd.

The Buyer: CEEG (Shanghai) Solar Science &Technology Co., Ltd.Address: No. 123, West Focheng Road, Economy and Technology Development Zone, Jiangning, Nanjing

Address: No. 68 Gangde West Road, Songjiang District, ShanghaiCode: 211100

Code:Contact person: Jianhua Zou

Contact person: Qiang TaoTel.: 025-52766609

Tel.: 021-57850711Fax: 025-52766767

Fax: 021-57850374





Through amicable consultation and in accordance with the Contract Law of the People’s Republic of China, the parties hereof agreed to enter into the following contractual terms regarding purchase of the following goods for mutual compliance and performance:


1.
Goods content




Target

Specification and

parameter

Quantity

(MW)

Unit price

(Yuan / W)

Total amount

(RMB)Monocrystalline 125 cells A (DJ165)

≥17.00%



10.5Monocrystalline 125 cells A (DJ165)

≤16.75%



10Monocrystalline 156 cells A

≥17.00%



11.2Monocrystalline 156 cells A

≤16.75%

3MW

10.5

Around 30,600,000Multicrystalline 156 cells A

≥15.50%



10.8Multicrystalline 156 cells A

≤15.25%



10Monocrystalline 125 cells B

≥16.25%



8Monocrystalline 156 cells B

≥16.25%



8Multicrystalline 156 cells B

≥14.50%



8Total:



3MW



Around 30,600,000


Total amount (in words): Around RMB thirty million and sixty hundred thousand


Remark: The price includes 17% valued-added tax (VAT).


Term of Contract: One Month (May 25, 2010 – June 25, 2010)





2.
Time and terms of payment


After the effectiveness of this contract, the Seller shall deliver to the Buyer the solar cells in installments with the quantity, specifications and types provided in this contract.  The Buyer shall remit the advance payment which accounts for 50% of total price of cells of each shipment into the account designated by the Seller within three working days upon receiving the delivery notice and then pick up the goods. As for the remaining 50% of each payment for goods, the Seller allows the Buyer to accumulate such amount to the credit facility of RMB 30 million granted to the Buyer (the credit facility of RMB 120 million is agreed in the contract numbered XS320100005).


The Buyer may pay through T/T or Acceptance Bill.


A/C No. ofJiangning Sub-branch of China Merchants Bank: 078002380175610001




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3.
Packing requirements: The goods shall be packed in carton boxes suitable for highway transportation so as to meet requirements for long-distance and long-time transportation.





4.
Place and term of delivery


4.1 Place of delivery: the Buyer’s factory


4.2 The Seller shall be responsible for goods transportation and related insurance.


4.3 Delivery in installments allowed.


4.4 The Seller shall provide the corresponding VAT invoices to the Buyer within 10 days after each delivery.





5.
Quality requirements and technical standards:


See Appendix I for the standard cells hereunder (shipment and transportation terms in Article 5.4 thereof are inapplicable).  Appendix I shall not apply to the B type cells hereunder.


The deficiency rate of A type opened and selected shall not exceed 0.3%/


The Seller shall be responsible for the substitution of A type that exceeds the amount and suffers damages resulting from the Seller’s packaging. The Seller shall deliver the cells through the correct transportation and processing methods subject to requirements hereunder.





6.
Quantity and quality objection: The Buyer shall complete quantity and quality inspection in accordance with the standard prescribed hereunder within seven days after picking up the goods. The buyer shall raise quality claim in writing within three days of detection and such claim shall be inspected by a third party agreed upon by both parties. If the Buyer fails to raise a quantity or quality claim within ten days after picking up the goods, the Seller’s products shall be deemed as qualified.





7.
Transfer of Contractual Rights and Obligations


Neither party may transfer all or part of the rights and obligations hereunder without written consent of the other party.





8.
Confidentiality


The parties hereto and their respective employees, agents, representatives and counsels shall treat the terms and conditions under this contract and any of its supplementary agreements as business secrets and shall not disclose the information to any third party without consent of the other party. Otherwise, the defaulting party shall compensate as much as twice of the direct or indirect losses to the other party.





9.
Force majeure


If any party fails to perform the contract due to any force majeure event, the affected party shall notify the other party in writing within seven days upon the occurrence of such event, and shall present written evidence issued by the relevant authority within fifteen days upon the end of such event. The affected party could be partially or wholly exempted from the liabilities in the light of the impact caused by such force majeure event. Where an event of force majeure occurs after the party’s delay in performance, the defaulting party shall not be exempted from its liabilities.





10.
Integrity Assurance


It shall be deemed as damage to the other party’s interest if the Buyer and its staff directly or indirectly give, in the name of the company or an individual, a gift of money, valuables, securities or provide an improper interest in other forms to any employee of the other party, or if any party and its staff carries out a transaction similar to this contract, in the name of the company or an individual, with any employee of the other party or any third person introduced by such employee. The damaging party shall compensate as much as twice of the direct or indirect losses incurred by the damaged party for such reason, and shall be liable for the liquidated damages of 20% of the amount of this contract per breach (up to RMB 1,000,000).


10.2 The integrity report method: Supervision Report Mailbox: JC@Chinasunergy.com, Report Phone Number: 86-25-5276 6726




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11.
Dispute resolution


Any and all disputes arising from the validity, performance or interpretation of this contract shall first be resolved by the parties through amicable consultation. In case no settlement can been reached through consultation, the disputes shall be governed by the people’s court of first instance with jurisdiction where the Buyer is located.  All related fees paid for litigation (including attorney fees, travel fees, evidence collection fees, notarization fees and litigation fees, etc) shall be borne by the losing party.





12.
Effective and miscellaneous


12.1 The contract shall take effect upon signature by both parties or seal by the special authorized agents. In case the contract text covers more than one page, seal on the perforation shall be affixed to such pages.


12.2 The contract is in duplicate, with each party holding one counterpart respectively. The two counterparts shall have the same legal effect. The parties hereof shall send the original contract to each other within three working days of the date hereof.


12.3 Any matters not mentioned herein shall be mutually negotiated between both parties and set forth in the supplemental agreements, which shall have the same legal effect as the contract.


12.4 Communication of quality claim and avoidance: fax or express. With respect to fax, the date of delivery shall be the date of reaching; with respect to express, the five days after the delivery shall be the date of reaching.





The Seller: China Sunergy (Nanjing) Co., Ltd.

The Buyer: CEEG (Shanghai) Solar Science &Technology Co., Ltd.Signature/seal: /s/

Signature/seal: /s/Date:

Date:


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