转动轮子只需要1.5千瓦时（5.4兆焦耳）的能量，这与使用8壶家用小水壶的能量大致相同。
It takes just 1.5 kilowatt-hours (5.4 M J) energy to rotate the Wheel -roughly the same as boiling eight small domestic kettles of water.
而排放硫、汞和煤灰的煤炭，其每千瓦时产能所造成的死亡人数仍将远远高于核能。
Coal, with its emissions of sulphur, mercury and soot, will continue to kill far more people per kilowatt hour than nuclear does.
通常来讲，煤生产每千瓦时产出的二氧化碳约为天然气的两倍。
Coal typically produces almost twice as much carbon dioxide per kilowatt-hour as natural gas.
一种方法是海水蒸馏，通过加热卤水可以得到浓缩的水蒸气，这种方法每淡化1立方米的海水需要10千瓦时的电量。
Some employ distillation, which needs about 10 kilowatt-hours (kWh) of energy per cubic metre of seawater processed. Brine is heated, and the resulting water vapour is condensed.
最初的太阳能薄膜模块可产能量为每瓦2美元左右，相当于15美分/千瓦时- 相当于全球许多市场的电力价格。
First Solar produces thin-film modules capable of creating energy at around $2 per watt, equivalent to 15 cents per kilowatt hour--matching electricity prices in many global markets.
为便于比较，日产的新电动车，利夫，配备的是24千瓦时的电池。
For comparison, Nissan's new electric car, the Leaf, comes with a 24-kilowatt-hour battery.
当这一车型的16千瓦时的电池组用尽时，它会自动切换到燃气发动机——这一转换过程非常平滑(在行驶中几乎无法察觉)。
When the car's 16-kilowatt-hour battery pack becomes depleted, the car automatically switches to a gas engine-a transition that is remarkably smooth (it's nearly impossible to discern on the road).
但是健康饮食和电费单不同，这不仅仅是像减少千瓦时用电一样食用更少的盐或糖那么简单。
But a healthy diet isn't like an electricity bill; it's not as simple as using less salt or sugar as though you were cutting down on your kilowatt hours.
在前40英里，伏特仅由16千瓦时的锂电池储存电力供应，不使用任何燃料，不产生废气。
For up to the first 40 miles, the Volt is powered solely by electricity stored in its 16-kwh lithium-ion battery, using no fuel and producing no emissions.
该款汽车的电池容量为24千瓦时，相当于普通日本家庭两天的用电量，日产公司指出。
The Leaf batteries have a capacity of 24 kilowatt hours when fully charged, equivalent to the electricity used by the average Japanese household in two days, said the company.
得益于性能更佳的涡轮和更大的发电量，自1990年以来，风力发电每千瓦时的成本从8 - 10美分下降下3.5 -4美分。
The cost of wind-power generation has come down from 8-10 cents to 3.5-4 cents per kWh since 1990 because of better turbines and higher volumes.
即使是最好的反渗透设备也需要3.7千瓦时的能源才能产出1000升的饮用水。
Even the best reverse-osmosis plants require 3.7 kilowatt hours (kWh) of energy to produce 1,000 litres of drinking water.
相较于前两种方法，Sparrow和Zoshi估算他们可以用不到1千瓦时的电力，同时也不需要其他任何付费能源就能产出更多的饮用水。
Mr Sparrow and Mr Zoshi, by contrast, reckon they can produce that much fresh water with less than 1 kWh of electricity, and no other paid-for source of power is needed.
在之后的5年内每年攀升500亿瓦并帮助企业优化生产线，这样太阳能发电的价格将下降到6美分每千瓦时。
In the next five years, annual construction would rise to 5 GW apiece, helping firms optimize production lines. As a result, solar electricity would fall toward six cents per kWh.
根据Mosquet的数据，日产Leaf汽车的24千瓦时锂电池组的成本是2万4千美元。
According to Mosquet's numbers, the 24 kilowatt-hour lithium-ion battery pack in the Nissan Leaf has a cost of about $24, 000.
用电，却很便宜，把Leaf的24千瓦时的电池组从空充满只需2.64美元。
Electricity, though, is pretty cheap, and filling a Leaf's 24 kilowatt-hour battery pack from empty should cost only about $2.64.
据国际能源署估算，与之形成对比的是美国的近海风力发电，成本为50-70美元/千瓦时，而化石燃料发电如果不算温室气体排放税的话，价格更低。
That compares with $50-70 per MWh for onshore wind power in America, by the IEA’s reckoning, and even lower prices for power from fossil fuels, unless taxes on greenhouse-gas emissions are included.
据传，雷诺-尼桑已经将每千瓦时成本控制在400美元以下，因此，如果能继续按此趋势，他们的汽车将会有更大的竞争力。
According to industry rumours, Renault-Nissan has got its costs down to below $400 per kwh, so if it can continue this progress its cars will become much more competitive.
相比之下，西门子公司的电化学方法每立方米消耗1.8千瓦时的电量，并且有望被降至1.5千瓦时每立方米。
The Siemens system, by contrast, consumes 1.8kwh per cubic metre, and the firm hopes to get that down to 1.5kwh.
每千瓦时电能的生产都会排放一定量的 CO2。
The electricity production process will typically result in a certain amount of CO2 emission per KWH generated.
而中国的太阳能发电价格，在不考虑土地成本的情况下已降到了每千瓦时1元以下，其中光伏发电的价格已经降到0.73元。
While China's solar power price, in not consider land costs have fallen to every KWH 1 yuan, of which (pv) power prices have fallen to 0.73 yuan.
因为氢生产是一种能量密集型工序，从甲烷获取氢每千瓦时将产生更多的二氧化碳。
The production of hydrogen from methane in converters will generate higher CO2 emissions per kilowatt hour since [hydrogen production] is an energy-intensive process.
但是健康饮食和电费单不同，这不仅仅是像减少千瓦时用电一样食用更少的盐或糖那么简单。
It's not as simple as using less salt or sugar as though you were cutting down on your kilowatt hours.
平均来说，一个普通四口之家每月用电量为800千瓦时，而大部分住宅屋顶太阳能电池板的发电量低于10千瓦。
A typical family of four people USES, on average, 800 Kwh per month and most residential rooftop units are of under 10kw capacity.
该插件逃逸可上升到每小时40英里和40英里的10千瓦时锂离子电池组。
The plug-in Escape can go up to 40 miles per hour and 40 miles on its 10 kilowatt-hour lithium-ion battery pack.
该插件逃逸可上升到每小时40英里和40英里的10千瓦时锂离子电池组。
The plug-in Escape can go up to 40 miles per hour and 40 miles on its 10 kilowatt-hour lithium-ion battery pack.
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