Holding(s) in Company

Ceres Power Holdings plc
23 March 2007




23 March 2007

Ceres Power Holdings plc ('Ceres' or the 'Company')

Symbol: CWR

NOTIFICATION OF MAJOR INTERESTS IN SHARES

1. Name of Issuer

Ceres Power Holdings plc

2. Reason for notification

Transparency Directive

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

OppenheimerFunds, Inc. (OFI)

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

-

5. Date of the Transaction

20 January 2007 (following introduction of the EU Transparency Directive)

6. Date on which issuer notified

20 March 2007

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

5%

8. Notified Details

(A) Voting Rights Attached to shares Number of Voting Rights (Direct) -

% of Voting Rights (Direct)

Number of Voting Rights (Indirect)  3,281,790

% of Voting Rights (Indirect)  5.53%



(B) Financial Instruments -



Total (A)+(B)

Total number of Voting Rights  3,281,790

Total % of Voting Rights  5.53%

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

- OppenheimerFunds, Inc. (OFI)

Proxy Voting

10. Name of Proxy holder

-

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

-

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

-

13. Any additional information

 -

14. Name of contact and telephone number for queries

OppenheimerFunds, Inc. (OFI), 001 212 323 0200

15. Name and signature of authorised company official responsible for making
this notification

Rex Vevers, Finance Director, 01293 400404


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