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Exhibit 8

Investments in subsidiary undertakings

Name and nature of business
    
    Country ofincorporation andregistration
    
    Type of share
    
    Percentage
shareholdingHazelwood Power Partnership*(Power generation)
    
    Australia
    
    Partners Capital
    
    
    92
    %Elektrárny Opatovice A.S.*(Power generation)
    
    Czech Republic
    
    Ordinary Shares
    
    
    99
    %International Power Global Developments Limited(Project development  overseas)
    
    England and Wales
    
    Ordinary Shares
    
    
    100
    %Pelican
Point Power Limited*(Power generation)
    
    England and Wales
    
    Ordinary Shares
    
    
    100
    %Rugeley Power Limited(Power generation)
    
    England and Wales
    
    Ordinary Shares
    
    
    100
    %Deeside Power Development Company Limited(Power generation)
    
    England and Wales
    
    Ordinary Shares
    
    
    100
    %International Power Fuel Company Limited(Fuel supplies)
    
    England and Wales
    
    Ordinary Shares
    
    
    100
    %National Power International Holdings BV*(Investment holding company)
    
    The Netherlands**
    
    Ordinary Shares
    
    
    100
    %Synergen Power Pty Limited*(Power generation)
    
    Australia
    
    Ordinary Shares
    
    
    100
    %Thai National Power Company Limited*(Power generation)
    
    Thailand
    
    Ordinary Shares
    
    
    100
    %Midlothian Energy Limited Partnership*(Power generation)
    
    US
    
    Partners Capital
    
    
    100
    %Milford Power Limited Partnership*(Power generation)
    
    US
    
    Partners Capital
    
    
    100
    %ANP Funding I, LLC*(Financing company)
    
    US
    
    Ordinary Shares
    
    
    100
    %International Power (Cayman) Limited(Financing company)
    
    Cayman Islands**
    
    Ordinary Shares
    
    
    100
    %IPR Insurance Company Limited*(Insurance captive)
    
    Guernsey
    
    Ordinary Shares
    
    
    100
    %International Power (Jersey) Limited(Financing company)
    
    Jersey**
    
    Ordinary Shares
    
    
    100
    %International Power (Finance) Limited(Financing company)
    
    England and Wales
    
    Ordinary Shares
    
    
    100
    %ANP
Blackstone Energy Company, LLC*(Power generation)
    
    US
    
    Ordinary Shares
    
    
    100
    %ANP Bellingham Energy Company, LLC*(Power generation)
    
    US
    
    Ordinary Shares
    
    
    100
    %Hays Energy Limited Partnership*(Power generation)
    
    US
    
    Partners Capital
    
    
    100
    %International Power Holdings Limited(Investment holding company)
    
    England and Wales
    
    Ordinary Shares
    
    
    100
    %Advanced Turbine Products LLC*(Manufacturer of turbine parts)
    
    US
    
    Partners Capital
    
    
    82
    %Al Kamil Power Company SAOC*(Power generation)
    
    Oman
    
    Ordinary Shares
    
    
    100
    %Tihama Power Generation Company Limited(Power generation)
    
    Saudi Arabia
    
    Ordinary Shares
    
    
    60
    %International Power Australia Holdings (1) Limited*(Investment holding company)
    
    England and Wales
    
    Ordinary Shares
    
    
    100
    %


All subsidiary undertakings operate in their country of incorporation, except
as indicated below. All subsidiary undertakings have December year ends. The
Group also has a number of overseas branch offices.

* Held by an intermediate subsidiary undertaking.  Operates in Australia.
** Operates in the UK