Holding(s) in Company

Renewable Energy Generation Ltd
04 June 2007



TR-1: NOTIFICATION OF MAJOR INTERESTS IN SHARES



1. Identity of the issuer or the underlying issuer of existing shares to which
voting rights are attached:

Renewable Energy Generation Limited



2. Reason for the notification (please place an X inside the appropriate bracket
/s):



An acquisition or disposal of voting rights: ( X )



An acquisition or disposal of financial instruments which may result in the
acquisition of shares already issued to which voting rights are attached: (    )



An event changing the breakdown of voting rights: (    )



Other (please specify) : (    )

.................



3. Full name of person(s) subject to the notification obligation:

Aviva plc & its subsidiaries



4. Full name of shareholder(s) (if different from 3.) :

BNY Norwich Union Nominees Limited    531,151*

Chase GA Group Nominees Limited     1,550,028*

CUIM Nominee Limited                  570,198*

 * denotes direct interest

BNP Paribas London                    325,000

BNY Norwich Union Nominees Limited    436,119

DLI Sustainable Futures Fund           94,000

Vidacos Nominees Limited            4,098,567



5. Date of the transaction (and date on which the threshold is crossed or
reached if different):

10 May 2007



6. Date on which issuer notified:

11 May 2007



7. Threshold(s) that is/are crossed or reached:

5% to 4% change at Indirect Interest level.



8. Notified details:

.................



A: Voting rights attached to shares


Class/type of shares if possible              Situation previous to the Triggering transaction
using the ISIN CODE
                                  Number of shares                   Number of voting Rights
GB00B0717F94                      8,055,063                          8,055,063



Resulting situation after the triggering transaction


Class/type of shares if      Number of shares         Number of voting rights           % of voting rights
possible using the ISIN CODE
                             Direct                   Direct       Indirect             Direct      Indirect
GB00B0717F94                 2,651,377                2,651,377    4,953,686            2.57%       4.81%





B: Financial Instruments

Resulting situation after the triggering transaction


Type of         Expiration Date      Exercise/Conversion       Number of voting rights     % of voting rights
financial                            Period/ Date              that may be acquired if the
instrument                                                     instrument is exercised/
                                                               converted.
N/A




Total (A+B)
Number of voting rights        % of voting rights

7,605,063                      7.38%




9. Chain of controlled undertakings through which the voting rights and/or the
financial instruments are effectively held, if applicable :

See Section 4



Proxy Voting:



10. Name of the proxy holder:

See Section 4



11. Number of voting rights proxy holder will cease to hold:

.................



12. Date on which proxy holder will cease to hold voting rights:

.................



13. Additional information:

Figures are based on a total number of voting rights of 103,101,014



14. Contact name:

Neil Whittaker



15. Contact telephone number:

01603 684420


                      This information is provided by RNS
            The company news service from the London Stock Exchange

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