Hon STUART NASH: The Green Star standard operates on a system of 100 points, with 4 star, 5 star or 6 star ratings available. A 5-star rating requires between 60 and 74 points, with points allocated for reductions in operational and embodied carbon, construction and operational waste, as well as other climate-friendly features such as reduced stormwater discharge or peak electricity demand. Buildings are big emitters, but the solution to this, such as improved design, better waste management, improved water and energy efficiency, and the low use of low-carbon materials, is achievable. This particular Green Star system is administered by the New Zealand Green Building Council and is adapted to suit a New Zealand context.