FORM 6-K

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549


                            Report of Foreign Issuer

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

                                  23 March 2007

                             INTERNATIONAL POWER plc
                               (Registrant's name)


                                  Senator House
                            85 Queen Victoria Street
                                 London EC4V 4DP
                                     England
                    (Address of principal executive offices)

        Indicate by check mark whether the registrant files or will file
               annual reports under cover 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
                the registrant in connection with Rule 12g3-2(b):







                            International Power plc
                                ("the Company")


                Notification of Share Transactions on behalf of
                 Persons Discharging Managerial Responsibility


This is to notify that on 23 March 2007 the Company was advised of the following
share transactions in ordinary shares of 50 pence each in the Company on behalf
of the Person Discharging Managerial Responsibility named below.


Exercise of options granted under the Company's Unapproved Executive Share
Option Scheme at an option price of 123.53 pence per share. The date of exercise
of options was 23 March 2007.


Sale of ordinary shares on 23 March 2007 which was undertaken at a price of
389.9516 pence per share.


Name                           Number of Options               Number of Shares
                                       Exercised               Sold to meet Tax
                                                                    Liabilities

Vince Harris                              64,762                         18,206


At International Power plc, all persons discharging managerial responsibilities
are required to hold shares in the Company which have a value of at least half
of their annual basic salary.



Stephen Ramsay
Company Secretary
23 March 2007








                                                INTERNATIONAL POWER plc
                                                (Registrant)


                             By: /s/ Stephen Ramsay
                            --------------------------------------------
                             Stephen Ramsay, Company Secretary