[chrisro]

Hopefully I haven't messed any of the numbers up:

$11 billion per year for 20 million homes or roughly $550/home/year or $45/home/month

And, for perspective: From 1936 to 1938, the Rural Electrification Administration spent $210 million ($3.37 billion in 2012 dollars) to connect 100,000 rural farms to the electrical grid at a cost $950 each (over $15,000 in 2012 dollars).

Edit: Per the title update from "annually" to "over 5 years" the above, non-historical numbers are off by a factor of 5. The costs would be $110/home/year or $9/home/month over 5 years!

[aqme28]

You messed up the numbers in the sense that it's $11 billion over 5 years, not annually. So you're over by a factor of 5.

[chrisro]

Oops! Thanks for the correction. I guess I missed that detail.

$9/home/month or $110/home/year for 5 years is even more manageable, though!

Edit: I see now where militiaman21 requested that the title be updated to "over 5 years" per new information. When I posted my numbers, the title said annually. I thought maybe I had missed something in the text.