The objectives of the audit were to form an opinion on the management of Commonwealth agencies' compliance with the Commonwealth's energy efficiency requirements and to identify areas for better practice in energy management. The audit focussed on:

• the implementation of the Energy Policy by Commonwealth Agencies; promulgation and coordination of energy use targets;
• energy and associated reporting by Commonwealth agencies;
• identification, examination and analysis of systemic and procedural impediments to achieving the Energy Policy; and
• development and discussion of ways to address these impediments.

The objective of the preliminary study was to form a view regarding the quality of, and controls over, the Budget estimates and to inform the decision whether to proceed to a full performance audit at this time. On the basis of the quantitative and qualitative analysis of the budget process undertaken during the study, the ANAO concluded that there are no apparent systemic problems in the cash-based estimating processes in the agencies reviewed that would, in themselves, lead to material statistical inaccuracies in the Budget's projected outcomes. The ANAO decided not to proceed with a full performance audit at this time.

The audit reviewed six budget-funded agencies (Australian Customs Service, Australian Taxation Office, Centrelink, Department of Defence, Department of Education, Training and Youth Affairs, and Department of Immigration and Multicultural Affairs) and two off-budget entities (Airservices Australia and Reserve Bank of Australia). The ANAO also examined the Office for Government Online's (OGO, formerly the Office of Government Information Technology, or OGIT) whole-of-government coordination of the Commonwealth's Year 2000 efforts.