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(1) https://en.wikipedia.org/wiki/Domestic_energy_consumption (2) Google "US electricity consumption per person" (3) My personal knowledge of wind, that it doesn't blow 24/7. (I've done several off-grid houses and each time have rejected wind in favour of spending the money on more solar panels.) (4) See 3.

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...but the Wikipedia article you site says 2kW, not 2.5kW, and adding heating seems irrelevant, because the vast majority of homes in New England do not use electricity for heating. The 17,000 homes figure that you're fact-checking is referring to 17,000 homes with today's actual electrical use, not energy use in general.

If you add up the numbers in the wikipedia chart, it's actually 2310, which I round up to 2500 to simplify the math. Either way, these are "household" numbers more dependant on the definition of household. I'd stick to the more solid numbers per capita for the entire country.

Is it reasonable to expect that on-shore wind turbine efficiency is identical to off-shore wind turbine efficiency?

Not even remotely, off shore turbines are much, much more efficient. Newer turbines already have capacity factors of over 40%, newer off shore turbines can exceed 50%.

http://rameznaam.com/2015/08/30/how-steady-can-the-wind-blow...

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