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Re:Broadband left out of infrastructure goals, and how the F... by rayiner on Friday March 17, 2017 @06:48PM (#13898646)
I cite the sources further down in response to a sibling comment. You're right, I didn't amortize the interest: fixing that brings the pay-off period to a bit under 25 years, not 37.
Re:Broadband left out of infrastructure goals, and how the F... by amazon_not on Saturday March 18, 2017 @03:40AM (#13900338)
... and less than 10 years once you use the correct numbers. And that's assuming operating costs are 60% before debt service, which is highish.
Re:Broadband left out of infrastructure goals, and how the F... by amazon_not on Wednesday March 22, 2017 @03:15PM (#13933831)
For those doubting my calculation, here are the correct numbers:

https://www.cga.ct.gov/2012/rpt/2012-R-0515.htm

At 4% interest, 83 000 subscribers and attributing none of the costs of the fiber network to the smart meter project the payback period is 10 years and 7 months. A far attribution of costs to the smart meter project would bring the payback period to under 10 years.