Michael J Costello AO, BA, LLB – Chairman

Michael Costello is the Chief Executive Officer of ActewAGL. Mr Costello was previously Managing Director of ACTEW Corporation and a member of the ACTEW Corporation Board. He is currently Chairman of Ecowise Environmental Pty Limited.

Mr Costello was previously Deputy-Managing Director of the Australian Stock Exchange and a Director of Export Finance Insurance Corporation and the Australian Trade Commission. He was Chief of Staff to the Hon Kim Beazley, a former Labor Opposition Leader and to the Hon Bill Hayden AC when he was the Minister for Foreign Affairs. Mr Costello has been the Secretary of the Department of Foreign Affairs and Trade and the Department of Industrial Relations.

Mr Costello has held a number of diplomatic posts including Ambassador to the United Nations. He received an Order of Australia (AO) in 1996 for international relations.

Dean Comrie

Mr Comrie joined Ecowise Environmental in 2004 and was appointed Managing Director of Ecowise Environmental Pty Limited in May 2007. Dean has a broad and multidisciplinary range of management experience in the environmental industry including Board, Executive Management, and General Management roles. Prior to joining Ecowise, Mr Comrie worked with WSL Consultants in various roles including that of General Manager. In 2002, Mr Comrie was awarded the prestigious Guy Parker Award.

Dianne O'Hara

Ms O'Hara is responsible for development and ongoing review of core strategic plans for ActewAGL. Ms O'Hara is also responsible for the realisation of business development opportunities identified within the strategic framework. Prior to joining ActewAGL, Ms O'Hara worked as General Manager Operations and Company Secretary at TransACT Communications Pty Limited. Ms O'Hara has a Bachelor of Laws degree and a Master of Public Law from the Australian National University.

John Parker

Mr Parker was formerly Chairman and MD of WSL Consultants Pty Ltd, an environmental consultancy established in 1963. John has over 35 years' experience in the water and environmental industries. He has been awarded with AWA Life Membership, an Engineering Excellence Award and a Banksia Gold Environmental Award. Mr Parker is currently researching energy and resources law at the University of Melbourne post graduate law school with particular reference to climate change and water law.

Ted Mathews – Chairman Audit and Risk Committee

Mr Mathews had twenty years' experience at senior executive level with the Federal Public Service including as Manager of Department of Finance Government Business Enterprise Reform Program (1986-1990), Head of the Asset Sales Task Force (1992-1993) and Head of the Commonwealth Electricity and Gas Reform Task Force (1993-1997).

From 1997 to 2001 Mr Mathews was engaged by PricewaterhouseCoopers as an adviser on energy market policy reforms, regulation and access arrangements. He was also a member of the team providing governance and probity advice.

In 2002 Mr Mathews assisted the Chairman of the ACT Commission of Audit in reviewing ACT finances and a number of government business enterprises.

He was appointed to the ACTEW Board in August 2002 and is an Alternate Member of the ActewAGL Joint Venture Partnerships Board, a Director of Ecowise Environmental Pty Limited and Ecowise Environmental (VIC) Pty Limited. Mr Mathews is a Member of ACTEW's Audit and Risk Management Committee and Chairman of the Ecowise Audit Committee.

Yap Chee Keong

Mr Yap Chee Keong, Chief Financial Officer of Singapore Power, is responsible for providing financial strategy and leadership throughout the SP Group. This includes overseeing the corporate finance, treasury, financial management, tax planning and risk management functions. He is also responsible for corporate planning, strategic investments and value creation. Prior to joining SP, Mr Yap worked with several multinational, listed and private companies as Chief Financial Officer and in other senior management positions. Mr Yap has a Bachelor of Accountancy degree from the National University of Singapore and is a Fellow of the Institute of Certified Public Accountants of Singapore.