TABLE OF CONTENTS - The Professional Green Building Council

Theme B: Creating a livable, healthy and environmentally viable citiesconsumption for typical office building in Sydney would equate to only $1.50-$2.50/m², making significant capital expenditure difficult to justify.As part of the Sydney Water analysis, the projected savings and costs identifiedwithin the individual water audits were assessed in order to allow establishment ofa number of benchmarks, i.e.Median Performance, representing the current median performance within themarketGood practice, representing median performance but with no leaksEconomic best practice, representing implementation of measures with paybacksof up to 2 yearsMarket leading practice, representing the implementation of all identified measuresirrespective of economicsThese benchmarks, as applied to the Sydney region, are summarised in Table 4.Table 4:Benchmarks for water cooled buildings in Sydney.___________________________________________Benchmark Value NABERS (kl/m²) rating___________________________________________Median 1.14 2.5Good practice 1.01 3.0Economic best practice 0.84 3.5Market leading practice 0.77 3.5___________________________________________Although no air-cooled buildings were assessed, it is also possible to projectsimilar benchmarks for air-cooled buildings based on the exclusion of coolingtowers.179