victorian electric vehicle trial mid-term report - Department of Transport

With reference to Table 14, the limitednumber of public charging locations forwhich cost data is available resultedin average cost for the charging circuitof around $3,500. These costs reflectpublic charging outlets located incommercial premises rather thanon-street locations.No.INSTALLATIONS11AVERAGE COST $ 3,393MEDIAN COST $ 3,224STD DEV $ 995MAX $ 5,500MIN $ 2,056Table 14. Cost benchmarking of the trialpublic charging circuits.Several on-street charging outletslocated on public lands wereinvestigated, and found to be largelycost prohibitive without additionalfunding assistance (beyond thatprovided by the Department). Threeon-street locations investigated inMelbourne’s CBD had installationcosts quoted from $15,000-$25,000,in response to which only one sitewas approved to go forwards with theassistance of supplementary funding.The funding provider was a corporatefleet operator seeking a high profilelocation in the vicinity of their placeof business in which to charge theirbranded vehicle.Influences on these costs wereprimarily related to the trenchingrequirements for cabling betweenthe nearest point of electrical supply(sourced from an underground pit)and the on-street location for thecharging outlet.Quick chargers were contracted at theoutset of the trial in 2010 at a cost ofaround $90,000 per unit based uponestimated prices for equipment thatwas undergoing commercialisationat that time. Design evolution andmanufacturing improvements haveresulted in rapid cost reductions suchthat in late 2012 the equipment costswere around $40,000. In 2012 Nissanbegan rolling out quick chargers inthe U.S. and Europe at a price of $US10,000 (Autoblog 2012b), suggestingthat further cost reductions arehighly likely.For reasons explained in Section 5.4.4,the trial quick charger roll-out has yetto be completed. Two quick chargersare being installed in locationswhich are undergoing significantredevelopment for separate reasons,limiting the ability to extract costdata in relation to the quick chargerinstallation specifically.Item Cost CommentsSite preparation $ 2,000 – 4,000 Includes review of site, works planning, applications andsubmissions for permits / approvalsTrenching $ 10,000 – 50,000 Varies according to site specific issues including extent of cable-run,allowances for existing ground assets/utilities encountered, specialexcavation requirements, possible soil contamination/asbestos/geotechnical issues, consultation required with affected landowners etc.Pipe, pits, conduit $ 3,000 – 6,000 Varies according to extent of cable-run, size of conduit; typically 3pits for 50 metre cable-runCabling $ 1,000 – 1,500 Varies according to extent of cable-run; 16 mm diameter typicalcable size cost is around $20 – 30 per metreCabling pull-through $ 250 – 500 Varies according to extent of cable-run; typical cost is around$5 – 10 per metreDistribution board $ 1,500 Varies according to distances, capacity and supplySlab, mounting, installation $ 5,000 – 7,000 For a typical slab length/width/depth of 1.2 x 0.8 x 0.2 metresTermination andcommissioning$ 1,000 Includes connection of cables, RCD installation, equipment testingand commissioning, customer handover and training; note that thisexcludes network testing and commissioningTotal $ 23,750 – 80,500 Establishment costs only – excludes quick charger hardware costTable 15. Quick charger establishment cost estimates for a ‘brownfield’ site, where distance between the 25 kW quick charger andthe point of electrical supply is around 50 metres and electrical supply upgrades are not required.