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28 PROPOSAL TO REVISE ENERGY EFFICIENCY REQUIREMENTS OF THE BUILDING CODE OF AUSTRALIA FOR COMMERCIAL BUILDINGS • The International Energy Agency (IEA) reviewed the experience of developed countries and concluded that there was substantial scope for GHG abatement in the building sector and that unexploited energy efficiency offers the single largest opportunity for GHG emissions reductions (IEA 2003). There are currently a suite of policy measures at national and State and Territory levels aimed at improving energy efficiency in the commercial buildings sector. These initiatives include: • the CPRS; • the current energy efficiency requirements for new commercial buildings in the current BCA; • mandatory disclosure of building energy, greenhouse and water performance; • a variety of rating tools to measure the environmental and greenhouse performance of buildings both at the design and operational stage. While the use of these tools is not compulsory, many governments have set, or are planning to set, minimum standards for their property portfolios according either to NABERS (see box 2.7) or Green star rating tools; • strategies for high efficiency of Heating, ventilation and air conditioning (HVAC) systems; • the phase-out of inefficient incandescent lighting; • Minimum Energy Performance Standards (MEPS) and labelling for appliances and equipment; and • the Energy Efficiency Opportunities (EEO) program, which covers large energy users in the commercial sector. Despite this range of measures focused on facilitating the adoption of energy efficient technologies, significant opportunities still exist for further improvements in the energy efficiency of commercial buildings. www.TheCIE.com.au
PROPOSAL TO REVISE ENERGY EFFICIENCY REQUIREMENTS OF THE BUILDING CODE OF AUSTRALIA FOR COMMERCIAL BUILDINGS 29 2.7 NABERS and the BCA An issue raised by industry in the past is that the BCA contains minimum energy efficiency requirements that have to be complied with in order to receive building approval while some building owners also require the building to achieve a NABERS Energy rating (formally Australian Building Greenhouse Rating). This is seen as an unnecessary duplication. Fundamentally, the BCA is a set of design requirements and NABERS Energy is a performance-in-use validation tool. However, NABERS Energy does have a design protocol which has aspects in common with the BCA approach. The ABCB Office has undertaken modelling as part of an investigation into the suitability of using the NABERS Energy design protocol as a BCA Verification Method. However, the modelling found that there are a number of issues to be resolved beforehand. Analysis of this issue is likely to be captured as part of the new national framework for energy efficiency standard setting, assessment and rating, which was announced on 2 July 2009 as part of the National Strategy on Energy Efficiency. Source: DEWHA and the ABCB. Need for further government intervention Clearly, the Australian Government and leading international agencies have highlighted opportunities for GHG abatement through energy efficient buildings for a number of reasons. In addition to complementarity with multiple policy objectives, energy efficiency measures offer economically efficient and sizeable abatement potential. Achieving the abatement potential, however, requires government action to overcome market barriers. The Australian Government has identified energy efficiency in buildings as a ‘second plank’ to its climate change policy. The Australian Government’s white paper on the Carbon Pollution Reduction Scheme (DCC 2008) states: Together with the Carbon Pollution Reduction Scheme, an expanded Renewable Energy Target, investment in carbon capture and storage demonstration, and action on energy efficiency are the foundation elements of Australia’s emissions reduction strategy. These policies will ensure that Australia has the tools and incentives to reduce its emissions and to develop technologies to help reduce greenhouse gas emissions globally. www.TheCIE.com.au
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