The utility behind New Castle’s bills
According to the Colorado Energy Office’s utility-territory map, New Castle is served by Xcel Energy (Public Service Company of Colorado), an investor-owned utility that banks exported solar as kWh credits that offset later use one-for-one.
We still confirm the utility from your bill, since service territories are drawn along lines and substations rather than street grids.
Sun, snow and terrain in New Castle
Elevation works in New Castle’s favor (~5,820 ft): cool, bright conditions help output. What varies lot to lot is shade from terrain and trees, plus how snow sheds off the roof.
Getting a solar permit in New Castle
Permits for solar in New Castle come from whichever office holds building and electrical authority for your address — the town, Garfield County, or, in many smaller Colorado jurisdictions, the State Electrical Board for electrical permits. We identify the right office and pull the permits as part of the job.
Where New Castle sits
Its population has held roughly steady since 2020 (4,917 then, 4,896 in 2025). It ranks #4 by population among the communities in Garfield County, and its nearest neighbors are Silt (7 mi), Glenwood Springs (10 mi), Rifle (13 mi).
Our crews are based in Denver, roughly 135 straight-line miles away. Longer-distance projects are planned in blocks so crews aren’t driving back and forth — we’ll give you a realistic timeline.
FAQ
Questions we hear
Which utility serves New Castle?
Xcel Energy (Public Service Company of Colorado), according to the state’s territory map. The name printed on your bill settles it.
Will I get credit for the solar I don’t use?
Yes, under Xcel Energy (Public Service Company of Colorado)’s rules: it banks exported solar as kWh credits that offset later use one-for-one. We model that rule directly rather than assuming full retail credit.
Does New Castle’s elevation affect solar output?
At about 5,820 feet, New Castle benefits from clear, cool conditions that help panel efficiency. Actual output depends far more on your roof’s direction, tilt and shading, which we model per address.
Who installs solar in Garfield County?
We do, with our own crews — no subcontractors — including in New Castle. Permits and utility paperwork are part of the job.