98 Consolidated  Notes to the  Financial  Statements Note 41 – Subsidiaries (continued) Ownership interest and voting power held 2011 2010 Name of subsidiary  Note  Country of incorporation  %  % AGL Southern Hydro Investments Pty Ltd  (e)  Australia  – 100 AGL Southern Hydro Pty Limited  (e)  Australia  – 100 AGL Southern Hydro (NSW) Pty Limited  (a)  Australia  100 100 AGL Torrens Island Pty Limited  (a)  Australia  100 100 AGL Torrens Island Holdings Pty Limited  (a)  Australia  100 100 AGL Upstream Gas (Mos) Pty Limited  (a)(b)  Australia  100 – (formerly Mosaic Oil NL) AGL Upstream Infrastructure Investments Pty Limited  (a)  Australia  100 100 AGL Upstream Investments Pty Limited  (a)  Australia  100 100 AGL Utility Services Pty Limited  (a)  Australia  100 100 AGL Wholesale Gas Limited  (a)  Australia  100 100 AGL Wholesale Gas (SA) Pty Limited  (a)  Australia  100 100 Australian Energy Ltd  (e)  Australia  – 100 Australia Plains Wind Farm Pty Ltd  (a)  Australia  100 100 Barn Hill Wind Farm Pty Ltd  (a)  Australia  100 100 Ben Lomond Wind Farm Pty Ltd  (a)  Australia  100 100 Box Hill Wind Farm Pty Limited  (a)  Australia  100 100 Coopers Gap Wind Farm Pty Ltd  (a)  Australia  100 100 Crows Nest Wind Farm Pty Ltd  (a)  Australia  100 100 Dual Fuel Systems Pty Limited  (a)  Australia  100 100 Geogen Australia Pty Ltd  (e)  Australia  – 100 Geogen Pty Limited  (e)  Australia  – 100 Geogen Victoria Pty Ltd  (a)  Australia  100 100 H C Extractions Pty Limited  (a)  Australia  100 100 Highfields Wind Farm Pty Limited  (a)  Australia  100 100 Macarthur Wind Farm Pty Ltd  (a)  Australia  100 100 Mosaic Oil NZ Limited  (b)  New Zealand  100 – Oaklands Hill Pty Ltd  (c)(d)  Australia  – – Oaklands Hill Wind Farm Pty Ltd  (d)  Australia  – 100 Powerdirect Pty Ltd  (a)  Australia  100 100 The Australian Gas Light Company  (a)(c)  Australia  100 – Victorian Energy Pty Limited  (a)  Australia  100 100 Worlds End Wind Farm Pty Ltd  (a)  Australia  100 100 (a) These wholly-owned subsidiaries are parties to a Deed of Cross Guarantee as detailed in Note 45. (b) Acquired during the financial year. (c) Incorporated during the financial year. (d) Disposed during the financial year. (e) Deregistered during the financial year.