Antelope County, NE Insulation Payback
Antelope County attic insulation, by the numbers
DOE classifies Antelope County as climate zone 5, cold — winters that dominate the energy bill, with cooling a minor factor. Its recommended attic R-value for bare joists is 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 1.7 years at an estimated $1,999/year saved. Topping up the attic pays for itself fast here.
The breakdown behind the number
Split it out and it's roughly $1,881 a year on the heating side, $118 on cooling. By estimated insulation savings, Antelope County lands in the 82th percentile nationally. Zone 5 alone covers 745 counties in this dataset, and Antelope County comes in 45th by savings. Nebraska averages $1,872/year across the counties tracked here; Antelope County comes in 7% higher.
Antelope County's actual weather, not a national average
The heating and cooling degree days behind this estimate — 7,035 HDD and 735 CDD (base 65°F, 1991-2020 normals) — come from OAKDALE, NE US, the nearest NOAA station with published normals, 9.5 miles from Antelope County's center. By total degree days, Antelope County sits at the 83th percentile nationally. One local detail the R-value alone won't tell you: Antelope County sits in moisture regime A (humid), which can affect the vapor-barrier choice.
If the attic isn't bare
If Antelope County's attic already has 3-4 inches of old insulation (about R-11) rather than bare joists, the recommended target drops to R-49. That smaller top-up costs around $2,280 and saves an estimated $292/year — payback about 7.8 years. Worth doing on the numbers alone.
Next steps for a Antelope County attic
Get more than one quote 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 asking upfront given Antelope County's estimated $1,999/year on the line.
Where these figures come from
Antelope 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.