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6 PROPOSAL TO REVISE ENERGY EFFICIENCY REQUIREMENTS OF THE BUILDING CODE OF AUSTRALIA FOR COMMERCIAL BUILDINGS 2.1 Energy demand projections for commercial and residential building sectors 23 2.2 Energy consumption in Australia, by industry, 2006-07 23 2.3 Commercial building sector emissions projections 25 2.4 Commercial building sector emissions with and without the CPRS 26 2.5 Commercial buildings sector emissions abatement under the CPRS 26 2.6 Potential and scope for energy efficiency in Australia (selected sectors) Error! Bookmark not defined. 3.1 Stage One and Two of the National Framework for Energy Efficiency (NFEE) 34 3.2 BCA structure 37 3.3 DTS versus alternative solutions 41 4.1 Costs and benefits considered in the impact analysis 44 4.2 Building forms and building types modelled by the ABCB 45 4.3 Representative locations 46 4.4 ABCB climate zones 47 5.1 Analysis of costs 54 5.2 Net additional capital cost by building form $/m 2 of gross floor area 57 5.3 Present value of total net compliance cost 60 5.4 Present value of total economywide costs 62 6.1 Change in energy consumption MJ/m 2 of gross floor area 65 6.2 Change in energy consumption Percentage change per square metre of gross floor area 66 6.2 Change in energy consumption Percentage change per square metre of gross floor area (continued) 67 6.3 Average retail electricity prices Cents per KWh 68 6.4 Average retail gas prices Cents per MJ 69 6.5 Value of annual energy savings, 2010 Dollars saved per annum per building 69 6.6 Total energy savings 71 6.7 Annual greenhouse gas abatement 73 6.8 Annual GHG abatement, tC02-e 75 7.1 Net impact 79 7.2 Net impact assessment, Australia 80 7.3 Variables tested in the sensitivity analysis 82 7.4 Monte Carlo simulation results 83 7.5 Histogram of benefit–cost ratio results 83 7.6 Sensitivity analysis — discount rate 84 10.1 Schedule of key events and outputs 99 www.TheCIE.com.au
PROPOSAL TO REVISE ENERGY EFFICIENCY REQUIREMENTS OF THE BUILDING CODE OF AUSTRALIA FOR COMMERCIAL BUILDINGS 7 A.1 Glazing systems — percentage of BCA 2009 glazing stringency achievable using high performance glazing instead of standard glazing 114 A.2 Double glazing system Annual energy savings (MJ/m2.a) 115 A.3 Possible reduction of BCA 2009 glazing allowance for a Class 5 building with complying wall insulation (Option A of Table J2.4a) 116 A.4 Glazing for Class 3 and Class 9c aged care buildings 117 A.5 Summary of current allowances, consultant recommended and proposed values 123 B.1 Building forms and building types used in this RIS 129 B.2 Average annual increase of commercial building stock, by type 130 B.3 New commercial building stock, 2010–20 130 B.4 ABCB Building Classes and CFC building categories 131 C.1 Heating method used in the modelling 136 C.2 Typical locations 136 D.1 Forecasts of average retail electricity prices, cents per KWh 139 D.2 Trends in city node gas prices, NSW 141 D.3 Australian average retail gas price, cents per MJ 141 D.4 Emissions intensity of electricity 142 E.1 Discount rates for RISs in various countries 144 F.1 Impact on optimal HVAC capacity requirements — chillers 149 F.2 Impact on optimal HVAC capacity requirements — boilers 150 www.TheCIE.com.au
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