Holding(s) in Company

TR-1: Notifications of Major Interests in Shares

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

Gas Turbine Efficiency plc

2. Reason for notification (yes/no)

An acquisition or disposal of voting rights

YES

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 notification obligation:

Generation Investment Management LLP

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

Generation IM Climate Solutions Fund, L.P.

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

11/06/2009

6. Date on which issuer notified:

15/06/2009

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

17%

B: Financial Instruments

Resulting situation after the triggering transaction

Type of financial instrument

Expiration date

Exercise/ conversion period/date 

No. of voting rights that may be acquired (if the instrument exercised/converted)

Percentage of voting rights

Total (A+B)

Number of voting rights

Percentage of voting rights

18,095,760

17.81%

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

Generation Investment Management LLP - Indirect: 

Generation IM Climate Solution Fund, L.P. : 18,095,760 17.81% = Total Position

Proxy Voting:

10. Name of proxy holder:

N/A

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

N/A

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

N/A

13. Additional information:

Notification is based on using the total voting rights figure of 101,597,594 as at 12 June 2009. Source: Company Website 

14 Contact name:

Peter Harris

15. Contact telephone name:

020 7534 4700