Question 1 3-5
Question 2 5-7
Question 3 7
In Australia, research for the Australian Sustainable Built Environment Council
(ASBEC) suggests that the building sector is directly responsible for around 24% of the total energy use. At present this is split fairly evenly between the residential and commercial building sectors. Reducing energy use and reducing greenhouse gas emissions are both worthwhile goals as it saves money and saves the environment. Reducing greenhouse gas (GHG) emissions has been presented with increasing urgency within recent years as it is driving climate change. There are many opportunities to reduce energy and emissions within the building sector.
Governments and industry groups are preparing for enhanced energy efficiency. Some matters are currently required by the Building Code of Australia (BCA 5 star, BASIX for NSW) & others are becoming so. (eg. NABERS Energy) Along with these mandatory regulations voluntary schemes are also available. (Green Star, GreenPower). Below I will discuss these mandatory legislative & planning requirements as well as optional solutions for thermal efficiency.
In Australia, there are currently two building regulations to control the efficiency of design for a new home or renovation:
Building Codes of Australia (BCA) - Under the current BCA, all new homes in Australia (except New South Wales) are to be designed to be rated at 6 stars for thermal efficiency. A BCA Section J Report is required by local councils and building authorities when applying for a building permit or Construction Certificate (CC). The