FORM 6-K


                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549


                        Report of Foreign Private Issuer
                      Pursuant to Rule 13a-16 or 15d-16 of
                      the Securities Exchange Act of 1934


                         For the month of October, 2005

(Indicate by check mark whether the registrant files or will file annual
reports under cover of Form 20-F or Form 40-F.)

                      Form 20-F  X     Form 40-F
                               -----            -----

(Indicate by check mark whether the registrant by furnishing the information
contained in this form is also thereby furnishing the information to the
Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of
1934. )

                          Yes            No  X 
                             -----         -----

(If "Yes" is marked, indicate below the file number assigned to registrant in
connection with Rule 12g3-2(b): 82-__________. )

                                      N/A

                       Huaneng Power International, Inc.
                     West Wing, Building C, Tianyin Mansion
                           No. 2C Fuxingmennan Street
                                Xicheng District
                              Beijing, 100031 PRC





This Form 6-K consists of:

The announcement on commencement of commercial operation of Unit 3 in Shantou
Power Plant Phase II of Huaneng Power International, Inc. (the "Registrant"),
made by the Registrant in English on October 25, 2005.











                                   SIGNATURE





         Pursuant to the requirements of the Securities Exchange Act of 1934,
the registrant has duly caused this report to be signed on its behalf by the
under-signed, thereunto duly authorized.



                          HUANENG POWER INTERNATIONAL, INC.



                          By  /s/ Huang Long          
                            ----------------




                          Name:    Huang Long

                          Title:   Director



Date:    October 25, 2005







                               [GRAPHIC OMITTED]

(a Sino-foreign joint stock limited company incorporated in the People's
Republic of China)

                               (Stock Code: 902)

               Commencement of Commercial Operation of Unit 3 in
                          Shantou Power Plant Phase II

This announcement is made pursuant to Rule 13.09(2) of the Rules Governing the
Listing of Securities on the Stock Exchange of Hong Kong Limited ("Listing
Rules").

Huaneng Power International, Inc. (the "Company") announced that the 600MW
coal-fired generating unit (Unit 3) of Shantou Power Plant Phase II completed
the 168 hours full-load trial run and was put into commercial operation on 20th
October, 2005. Before being put into operation, construction of the
desulphurization facilities of Unit 3 had been completed at the same time as
the principal part of the generating unit, and a flue-gas emission test was
carried out on 30th September, 2005.

To date, the Company's total generation capacity on an equity basis has
increased from 21,653MW to 22,253MW.

Huaneng Power International, Inc. develops, constructs, operates and manages
large power plants in China nationwide, with a total generation capacity of
22,253MW on an equity basis. The Company wholly owns sixteen operating power
plants, and has controlling interests in ten operating power companies and
minority interests in four operating power companies. Currently, it is one of
the largest independent power producers in China.

                                                         By Order of the Board
                                                               Huang Long
                                                                Director

As at the date of this announcement, the directors of the Company are:

Li Xiaopeng                                 Qian Zhongwei
(Executive director)                        (Independent non-executive director)
Huang Yongda                                Xia Donglin
(Executive director)                        (Independent non-executive director)
Wang Xiaosong                               Liu Jipeng
(Non-executive director)                    (Independent non-executive director)
Na Xizhi                                    Wu Yusheng
(Executive director)                        (Independent non-executive director)
Huang Long                                  Yu Ning
(Executive director)                        (Independent non-executive director)
Wu Dawei
(Non-executive director)
Shan Qunying
(Non-executive director)
Xu Zujian
(Non-executive director)
Liu Shuyuan
(Non-executive director)

Beijing, the PRC
25th October, 2005