SECURITIES AND EXCHANGE COMMISSION

                            Washington, D.C. 20549

                             (Amendment No. 4 to)

                                  SCHEDULE TO

                Tender Offer Statement under Section 14(d)(1)
              or 13(e)(1) of the Securities Exchange Act of 1934

                              Innogy Holdings plc
                      (Name of Subject Company (issuer))

            GBV Funfte Gesellschaft fur Beteiligungsverwaltung mbH
                            RWE Aktiengesellschaft
                     (Names of Filing Persons (offerors))

                          American Depositary Shares
                          Ordinary Shares of 10p each
                        (Title of Class of Securities)

                    45769A103 (American Despositary Shares)
                          G4782H101 (Ordinary Shares)
                     (CUSIP Number of Class of Securities)

                               Dr. Georg Mueller
                            RWE Aktiengesellschaft
                                 Opernplatz 1
                            D-45128 Essen, Germany
                               011 49-201-12-00
                (Name, address and telephone numbers of person
                       authorized to receive notices and
                  communications on behalf of filing persons)

                                With a copy to:
                             Peter S. Wilson, Esq.
                            Cravath, Swaine & Moore
                                Worldwide Plaza
                               825 Eighth Avenue
                              New York, NY 10019
                                (212) 474-1000

                           CALCULATION OF FILING FEE

     Transaction valuation                       Amount of filing fee
     739,564,155 (1)                             $68,040 (1)(2)


(1)  For purposes of calculating the filing fee pursuant to Rule 0-11(d), the
     transaction value of the Innogy Shares and Innogy ADSs (each Innogy ADS
     represents 10 Innogy Shares) to be received by the Purchaser, assuming
     acceptance of the Offer by holders in the United States, is calculated as
     follows: 188,460,000 Innogy Shares (including Innogy Shares represented
     by Innogy ADSs) multiplied by 275 pence per Innogy Share, the cash
     consideration being offered per Innogy Share, which yields
     (Pounds)518,265,000, converted at the exchange rate on March 26, 2002, of
     (Pounds)1=$1.427, which yields $739,564,155, multiplied by .000092, which
     yields $68,040.

(2)  Sent by wire transfer to the SEC on March 28, 2002.





     [ ]  Check the box if any part of the fee is offset as provided by Rule
          0-11(a)(2) and identify the filing with which the offsetting fee was
          previously paid. Identify the previous filing by registration
          statement number, or the Form or Schedule and the date of its
          filing.

          Amount Previously Paid: N.A.     Form or Registration No.: N.A.

          Filing Party:  N.A.              Date Filed:  N.A.

     [ ]  Check the box if the filing relates solely to preliminary
          communications made before the commencement of a tender offer.

     Check the appropriate boxes below to designate any transactions to which
     the statement relates:

     [x]  third-party tender offer subject to Rule 14d-1.

     [ ]  issuer tender offer subject to Rule 13e-4.

     [ ]  going-private transaction subject to Rule 13e-3.

     [ ]  amendment to Schedule 13D under Rule 13d-2.

Check the following box if the filing is a final amendment reporting the
results of the tender offer: [ ]







     This Amendment No. 4 amends the Tender Offer Statement on Schedule TO
initially filed on March 29, 2002, by GBV Funfte Gesellschaft fur
Beteiligungsverwaltung mbH, a company organized under the laws of The Federal
Republic of Germany (the "Offeror"), and a wholly owned subsidiary of RWE
Aktiengesellschaft, a company organized under the laws of The Federal Republic
of Germany ("RWE"), relating to the third-party tender offer by the Offeror to
purchase all of the (i) ordinary shares of 10 pence each (the "Innogy Shares")
of Innogy and (ii) American Depository Shares ("Innogy ADSs"), each
representing 10 Innogy Shares and evidenced by American Depository Receipts
("Innogy ADRs").

     On April 29, 2002, the Offeror issued a press release related to the
third-party tender offer by the Offeror. A copy of the press release is
attached hereto as Exhibit (a)(14).

ITEM 12.  EXHIBITS.

* (a)(1)            Offer Document dated March 28, 2002.

* (a)(2)            Letter of Transmittal.

* (a)(3)            Notice of Guaranteed Delivery.

* (a)(4)            Letter to Brokers, Dealers, Commercial Banks, Trust
                    Companies and Other Nominees.

* (a)(5)            Letter to Clients for use by Brokers, Dealers, Commercial
                    Banks, Trust Companies and Other Nominees.

* (a)(6)            Guidelines for Certification of Taxpayer Identification
                    Number on Substitute Form W-9.

* (a)(7)            Acceptance, Authority and Election.

* (a)(8)            Investors' Guide to Completing the Form of Acceptance.

* (a)(9)            Press Release announcing the Recommended Cash Offer by GBV
                    Funfte Gesellschaft fur Beteiligungsverwaltung mbH for
                    Innogy Holdings plc dated March 22, 2002.

* (a)(10)           Summary Advertisement in The Wall Street Journal, dated
                    March 29, 2002.

* (a)(11)           Form of Summary Advertisement in the Financial Times,
                    dated March 30, 2002.

* (a)(12)           Press Release announcing the posting of the Offer
                    Document, dated April 2, 2002.

* (a)(13)           Question and Answer Script used by the Information Agent.

  (a)(14)           Press release extending the Recommended Cash Offer by GBV
                    Funfte Gesellschaft fur Beteiligungsverwaltung mbH for
                    Innogy Holdings plc and announcing the level of
                    acceptances.

* (d)(1)            Inducement Fee Letter Agreement, dated March 21, 2002,
                    between RWE Aktiengesellschaft and Innogy Holdings plc.

* (d)(2)            Director Undertaking, dated March 21, 2002, from Richard
                    Delbridge to RWE Aktiengesellschaft.

* (d)(3)            Director Undertaking, dated March 21, 2002, from Steve
                    Fletcher to RWE Aktiengesellschaft.

* (d)(4)            Director Undertaking, dated March 21, 2002, from Ross
                    Sayers to RWE Aktiengesellschaft.

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* (d)(5)            Director Undertaking, dated March 21, 2002, from Andrew
                    Duff to RWE Aktiengesellschaft.

* (d)(6)            Director Undertaking, dated March 21, 2002, from Mike
                    Bowden to RWE Aktiengesellschaft.

* (d)(7)            Director Undertaking, dated March 21, 2002, from Brian
                    Morrison Count to RWE Aktiengesellschaft.

* (d)(8)            Director Undertaking, dated March 21, 2002, from Yvonne
                    Constance to RWE Aktiengesellschaft.

* (d)(9)            Director Undertaking, dated March 21, 2002, from Charles
                    Brandon Gough to RWE Aktiengesellschaft.

* (d)(10)           Director Undertaking, dated March 21, 2002, from Robin
                    Mountfield to RWE Aktiengesellschaft.

*    Previously filed.



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                                   SIGNATURE

     After due inquiry and to the best of my knowledge and belief, I certify
that the information set forth in this statement is true, complete and
correct.

Dated: April 29, 2002


                                          GBV Funfte Gesellschaft fur
                                          Beteiligungsverwaltung mbH

                                          by /s/ Klaus Sturany
                                             ---------------------------------
                                             Name:  Dr. Klaus Sturany
                                             Title: Managing Director


                                          by /s/ Richard Klein
                                             ---------------------------------
                                             Name:  Dr. Richard Klein
                                             Title: Managing Director



                                          RWE Aktiengesellschaft

                                          by /s/ Georg Muller
                                             ---------------------------------
                                             Name:  Dr. Georg Muller
                                             Title: General Counsel



                                          by  /s/  Georg Lambertz
                                              --------------------------------
                                              Name:  Georg Lambertz
                                              Title: Vice President Finance

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                               INDEX TO EXHIBITS

  EXHIBIT NUMBER                    DOCUMENT

* (a)(1)            Offer Document dated March 28, 2002.

* (a)(2)            Letter of Transmittal.

* (a)(3)            Notice of Guaranteed Delivery.

* (a)(4)            Letter to Brokers, Dealers, Commercial Banks, Trust
                    Companies and Other Nominees.

* (a)(5)            Letter to Clients for use by Brokers, Dealers, Commercial
                    Banks, Trust Companies and Other Nominees.

* (a)(6)            Guidelines for Certification of Taxpayer Identification
                    Number on Substitute Form W-9.

* (a)(7)            Acceptance, Authority and Election.

* (a)(8)            Investors' Guide to Completing the Form of Acceptance.

* (a)(9)            Press Release announcing the Recommended Cash Offer by GBV
                    Funfte Gesellschaft fur Beteiligungsverwaltung mbH for
                    Innogy Holdings plc dated March 22, 2002.

* (a)(10)           Summary Advertisement in The Wall Street Journal, dated
                    March 29, 2002.

* (a)(11)           Form of Summary Advertisement in the Financial Times,
                    dated March 30, 2002.

* (a)(12)           Press Release announcing the posting of the Offer
                    Document, dated April 2, 2002.

* (a)(13)           Question and Answer Script used by the Information Agent.

  (a)(14)           Press release extending the Recommended Cash Offer by GBV
                    Funfte Gesellschaft fur Beteiligungsverwaltung mbH for
                    Innogy Holdings plc and announcing the level of
                    acceptances.

* (d)(1)            Inducement Fee Letter Agreement, dated March 21, 2002,
                    between RWE Aktiengesellschaft and Innogy Holdings plc.

* (d)(2)            Director Undertaking, dated March 21, 2002, from Richard
                    Delbridge to RWE Aktiengesellschaft.

* (d)(3)            Director Undertaking, dated March 21, 2002, from Steve
                    Fletcher to RWE Aktiengesellschaft.

* (d)(4)            Director Undertaking, dated March 21, 2002, from Ross
                    Sayers to RWE Aktiengesellschaft.

* (d)(5)            Director Undertaking, dated March 21, 2002, from Andrew
                    Duff to RWE Aktiengesellschaft.

* (d)(6)            Director Undertaking, dated March 21, 2002, from Mike
                    Bowden to RWE Aktiengesellschaft.

* (d)(7)            Director Undertaking, dated March 21, 2002, from Brian
                    Morrison Count to RWE Aktiengesellschaft.

* (d)(8)            Director Undertaking, dated March 21, 2002, from Yvonne
                    Constance to RWE Aktiengesellschaft.

* (d)(9)            Director Undertaking, dated March 21, 2002, from Charles
                    Brandon Gough to RWE Aktiengesellschaft.

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* (d)(10)           Director Undertaking, dated March 21, 2002, from Robin
                    Mountfield to RWE Aktiengesellschaft.

* Previously filed.

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