Only 20% of the total energy is consumed in the US for residential uses. The most believable energy scenarios that I've seen put wind contributing between 5% and 10% of the total in a non-fossil fuel energy grid. The highest numbers I've seen put wind a 20% of the total.
I don't know where other people are getting their levelized* cost of electricity. Wikipedia has a good article on this.
https://en.wikipedia.org/wiki/Cost_of_electricity_by_source
According to the US government's numbers, onshore wind power is far less costly than photo-voltaic, much cheaper than coal and competitive with natural gas. This would make the case for building wind power farms even if it can only meet a fraction of our needs. That said, there is something screwy about their report because "advanced nuclear", which they say is cheap, doesn't even exist in commercial form right now. You know what they say about liars and numbers.
Source: Energy Information Administration's (EIA) Annual Energy Outlook released in 2015 (AEO2015). They are in dollars per megawatt-hour (2013 USD/MWh).
*The levelized cost of electricity (LCOE), also known as Levelized Energy Cost (LEC), is a first-order economic assessment of the cost competitiveness of an electricity-generating system that incorporates all costs over its lifetime: initial investment, operations and maintenance, cost of fuel, cost of capital.