Phillips County’s utility map
Territory shares by land area (Colorado Energy Office map): Highline Electric Association, about 100%; City of Holyoke (municipal electric), about 0%; Town of Haxtun (municipal electric), about 0%. The county seat, Holyoke, maps to City of Holyoke (municipal electric).
The largest by area, Highline Electric Association, is a electric cooperative that pays for excess generation at an avoided-cost rate well below retail.
A snapshot of Phillips County
Phillips County declined about 2.5% between 2020 and 2025 (4,534 → 4,420). It has 3 communities on our map, the largest being Holyoke, Haxtun, Paoli.
The county is fairly uniform in elevation — Holyoke near 3,730 feet and the geographic center around 3,770 feet — so conditions are relatively consistent across it.
It’s part of our Eastern Plains region. The county center is about 152 miles from our Denver office.
Permitting across Phillips County
Permitting in Phillips County depends on whether you’re inside a town. Towns with their own building departments issue their own permits; unincorporated areas go through the county, and the State Electrical Board handles electrical permits in many smaller jurisdictions.
FAQ
Questions we hear
Which electric utilities serve Phillips County?
By area, the state map shows Highline Electric Association, City of Holyoke (municipal electric), Town of Haxtun (municipal electric). The county seat, Holyoke, maps to City of Holyoke (municipal electric). Your bill is the final word.
Do you install solar in Phillips County?
Yes — our own Colorado crews install throughout Phillips County, including permits and utility interconnection.
How high is Holyoke, and does it matter for solar?
Holyoke sits at about 3,730 feet. Cooler, clearer air helps panel efficiency, but roof orientation and shading matter far more; we model both per address.