POWER TO THE PEO­PLE! IF IT’S AROUND...

Wheels (Australia) - - Your Say -

WHERE IS ALL the elec­tric­ity go­ing to come from to charge EVS? Us­ing an EV that has a 40kwh bat­tery, here’s what I’ve cal­cu­lated, as­sum­ing: an av­er­age house­hold uses 6000kwh/an­num (16.5kwh/day); an av­er­age daily com­mute of 44km; and an av­er­age avail­able dis­tance of 240km. Given this, you’ll need to recharge your bat­tery ev­ery five days, re­quir­ing 2900kwh over a year.

ARENA is pre­dict­ing that sales will be around 615,000 EVS per an­num. By the year 2030 we could have 2,000,000 EVS in Aus­tralia with ad­di­tional energy re­quire­ments of 5800gwh (5,800,000,000kwh)! The av­er­age house­hold uses peak elec­tric­ity in the early even­ing – not a good time to charge the EV!

Charg­ing EVS dur­ing off-peak times would help dis­trib­ute the load. How­ever, this would re­quire an enor­mous ef­fort by the government to build the in­fra­struc­ture to gen­er­ate the re­quired renewable energy.

Chris Groothoff, email Your broader ques­tion is valid, Chris, even if the cal­cu­la­tion of the likely size of the na­tional EV fleet in 2030 doesn’t stack up, nor the power de­mand, as a de­cent pro­por­tion of those EVS will be small-bat­tery hy­brids. How­ever, part of the off-peak charg­ing so­lu­tion may lie with Cloud-con­nected charg­ers, which au­to­mat­i­cally start the recharg­ing process (within a pre­scribed pe­riod) when de­mand is at its low­est. And don’t dis­miss the grow­ing take-up of do­mes­tic so­lar with bat­tery stor­age – Ed

WHERE IS ALL THE ELEC­TRIC­ITY GO­ING TO COME FROM TO CHARGE EVS? “

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