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aries1988 : electric   6

Des voitures sans essence ni diesel ? Comment s’y retrouver parmi les alternatives
Si l’on en croit Nicolas Hulot, ministre de la transition écologique, les voitures à essence et diesel auront disparu d’ici à 2040. Avec quel véhicule pourrons nous alors rouler ?

dans l’Hexagone 100 000 voitures électriques ont été vendues ces dernières années, pour moins d’une centaine de voitures à hydrogène. Le tout à comparer à un marché automobile carboné où s’écoulent 2 millions de voitures neuves et 6 millions de véhicules d’occasion par an.
reportage  car  france  motor  electric  oil&gas 
july 2017 by aries1988
First one up the drive | The Economist
A new sort of storage device gives lithium-ion batteries a run for their money
2014  innovation  batteries  electric 
november 2016 by aries1988
新能源的并网给电力工程师带来了更为头疼的难题:天气。用户老爷们的需求已经够难对付了,这下又来了一个看老天爷脸色的奇葩……这日子没法过了(╯ ̄Д ̄)╯┻━┻ 2012 年吉林省的弃风率达到 32%,也就是 1/3 的发电量被白白丢在了风里。除了当地消费能力有限的原因之外,控制上的难题同样也是原因。风力和光伏短时间内的波动性非常严重,难以与电网同步,俗称“垃圾电”,如果直接并网会导致整个电力系统的不稳定。
eolien  electric  batteries  energy  engineering 
october 2016 by aries1988
Electric cars see range, battery and ease of charging as barriers to mass adoption —
Road transport accounts for more than 17 per cent of global CO2 emissions, according to figures from Transport & Environment, an environmental lobby group. Migrating car use to electric vehicles could make a big contribution to curbing man-made carbon emissions. Greg Archer, a director at the group, says: “Combined with the rapidly falling costs for batteries and renewable electricity, it is clear electro-mobility is becoming increasingly affordable and offers an unrivalled opportunity to decarbonise vehicles.”

Tesla’s Model S and X cars, which claim to travel in excess of 250 miles on a charge, remain prohibitively expensive for many, costing between $70,000 and $120,000. Carmakers are pushing to hit a sweet spot on technology and price — a $35,000 car that can travel more than 200 miles.

“Everywhere you park you need charging points,” says Mr Fairbairn. Unlike petrol stations, where motorists can fill up in a few minutes, electric charging takes much longer.

“The nature of electricity doesn’t support the power transfers you need for two minute-charging, even a long way in the future,” he says.
transport  future  electric 
august 2016 by aries1988

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