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" ... A better lot design for 40 cars has 40 slots, but only a small number can provide the full 7kw. Those are allocated to the few cars each day which actually need that. The rest of the spots can be a mix of 3kw and 1.5kw stations. These can be wired using the same wire thickness used in household plugs, which is safer and low cost. (3kw stations just need slightly different wiring to use 240v on the same wires as 1.5kw stations.) Each kw represents about 4 miles/hour of recharge speed for typical cars. ... "
" ... Is that a lot? Well consider that the average American home uses 10,800 kWh per year, or 903 kWh per month, according to EIA data. That equates to a steady demand of about 1.2 kw. Thus, 1 mw of constant power generation is enough to supply the electricity needs of 830 homes. ... "
" ... Siemens has over 300 hours of flight test time on small aircraft with electric motors that put out 260 kw or less, and is supplying small motors for the Sunflyer 2, a two-seat electric plane from Denver’s Bye Aerospace. ... "