Brown County, NE Insulation Payback
Brown County attic insulation, by the numbers
Brown County, Nebraska is zone 5 under DOE's climate map (Cold), which means winters that dominate the energy bill, with cooling a minor factor. An uninsulated attic there should be built up to R-60. Going from R-2 to the recommended R-60 costs roughly $3,480 installed for a typical attic (about 1,000 sq ft), and pays for itself in about 2 years at an estimated $1,763/year saved.
Topping up the attic pays for itself fast here.
The breakdown behind the number
Split it out and it's roughly $1,602 a year on the heating side, $161 on cooling. By estimated insulation savings, Brown County lands in the 70th percentile nationally. Zone 5 alone covers 754 counties in this dataset, and Brown County comes in 367th by savings. Nebraska averages $1,872/year across the counties tracked here; Brown County comes in 6% lower.
The climate data behind this
The heating and cooling degree days behind this estimate — 5,993 HDD and 1,001 CDD (base 65°F, 1991-2020 normals) — come from Elsmere 9 ENE, NE US, the nearest NOAA station with published normals, 13.7 miles from Brown County's center. Combined heating and cooling load puts Brown County in the 71st percentile of this 3,171-county dataset. One local detail the R-value alone won't tell you: Brown County sits in moisture regime A (humid), which can affect the vapor-barrier choice.
If the attic isn't bare
A shallower starting point changes the math: with R-11 already down, only the gap to R-49 needs filling, at roughly $2,280 for an estimated $257/year saved (~8.9-year payback). Call this borderline rather than a clear win.
Next steps for a Brown County attic
Get quotes from at least two local contractors before committing. Attic access and any needed air sealing move the price around, and most contractors won't take a job below roughly $600 regardless of size - worth checking upfront given Brown County's estimated $1,763/year on the line.
Where these figures come from
Brown County's R-60 target and its degree-day figures both come from named federal sources - see the methodology guide for exactly which ones. The guide to what R-value actually means explains why R-60 is the target here specifically.