Solar in Evergreen, Colorado

The Colorado Energy Office’s utility-territory map (data last edited July 2026) places about 99.97% of the Evergreen census-designated place in Xcel Energy territory. CORE Electric Cooperative’s territory borders it, and the CDP line doesn’t follow the Evergreen ZIP codes, so a foothill home outside the CDP boundary can say “Evergreen” on the mailbox and still be a CORE member. The practical test is simple: look at the utility name on your electric bill. We confirm it before designing anything.

It matters because the two utilities treat solar differently. Xcel credits exported kilowatt-hours one-for-one into a bank that carries forward, and since November 1, 2025 its default residential time-of-use schedule puts on-peak at 5–9 p.m. on non-holiday weekdays. CORE, which ended its power-supply arrangement with Xcel at the end of 2025, runs on co-op rules with a lower annual payout for leftover credits and a residential demand charge.

For homes inside the CDP, Xcel net metering is the rule: each kWh you send to the grid offsets a kWh you buy, and unused credits roll forward rather than being cashed out cheaply. That makes the math friendlier than it is at most co-ops, though shade usually limits Evergreen systems long before any size cap does.

Xcel’s time-of-use schedule prices on-peak power at about 2.7 times off-peak. Mountain homes tend to use a lot of evening energy, so we model your actual Xcel bills against that schedule rather than dropping in a Denver estimate.

CORE members with systems of 10 kW AC or less net 1:1 through the year. What’s left at the annual true-up, and exports from systems larger than 10 kW, are paid at CORE’s avoided-cost rate, which is a small fraction of retail. Oversizing to “sell back” power rarely pays for a CORE member, so we size to roughly what you use.

CORE also bills residential members a demand charge based on their highest 60-minute use between 4 and 8 p.m. Solar alone doesn’t reliably shave that peak on a winter evening; a battery can. Confirm CORE’s current tariff before you sign anything, and we check it for every CORE proposal.

Because Evergreen is unincorporated, Jefferson County is your permitting authority whichever utility you’re on. For a residential rooftop system the county requires no Planning & Zoning permit; it requires an electrical permit from Jefferson County Building Safety, with no plan review, and the plans must be on site for inspection. If the array’s weight exceeds what the roof was designed for, the county asks for stamped engineering covering attachment, wind, snow and exposure.

Ground mounts, which make a lot of sense on shaded Evergreen lots with an open meadow, are a different permit path; we confirm the county’s requirements for your parcel before quoting one.

Tree shade is the single biggest reason an Evergreen roof doesn’t work for solar. At 7,000-plus feet the sun is strong, but a stand of ponderosa pine on the south side can cut winter production to a fraction of what the same roof would make on the plains. We run a year-round shade analysis before quoting; sometimes the answer is a ground mount in the clearing, sometimes a smaller array, and sometimes no solar at all.

Thinning trees for defensible space can also open up a roof. If you’re doing wildfire mitigation anyway, it’s worth coordinating the two.

Evergreen gets more snow than Denver, and it lingers longer on north- and east-facing slopes. Panels on a steep, sunny roof usually shed snow within a few days; low-slope arrays and shaded ground mounts hold it longer. Design snow loads are set by Jefferson County, and our racking and attachment spacing are engineered to them.

Evergreen is squarely in the wildland-urban interface, and because the CDP is Xcel territory, Xcel’s public-safety power shutoffs are directly relevant here. Its December 2025 and March 14, 2026 shutoffs included parts of Jefferson County — about 3,400 Jefferson County customers in March — and such events can last 24 to 72 hours or more. Whether CORE has run its own shutoffs in the surrounding foothills is something we haven’t verified, but any mountain utility can de-energize lines in extreme fire weather, and winter storms knock out power lines regardless.

Many Evergreen homes are on wells, which means no power equals no water. A battery that keeps the well pump, furnace blower and fridge running is often the most valuable thing we install here.