In short: Grand Junction has about 70,600 people and sits in Mesa County. Public Service Co of Colorado, Holy Cross Electric Assn, Inc and Grand Valley Power serves different parts of Mesa County, so your utility depends on your address; their 2024 home averages range from 12.04¢ to 15.94¢ per kWh (EIA). FEMA rates Mesa County lightning “very high”. Rooftop solar here makes roughly 1,460 kWh a year per kW of panels by our estimate, which is good for solar.
This page covers what is local to Grand Junction: its utility, outage records, sunshine, weather risks and charging. Statewide rules such as net metering, incentives and electrician licensing are in our Colorado energy guide.
Grand Junction at a glance
- Place: Grand Junction, Mesa County, Colorado; about 70,554 residents (Census Bureau estimate, July 2024).
- Utility: Public Service Co of Colorado (investor-owned). Homes paid an average 15.05¢ per kWh in 2024 (EIA-861); the average customer lost 158 minutes of power on normal days and 352 counting major storms, with 1.4 interruptions a year (utility-wide, not just Grand Junction).
- Utility: Holy Cross Electric Assn, Inc (member-owned cooperative). Homes paid an average 12.04¢ per kWh in 2024 (EIA-861); the average customer lost 56 minutes of power on normal days, with 1.2 interruptions a year (utility-wide, not just Grand Junction).
- Utility: Grand Valley Power (member-owned cooperative). Homes paid an average 15.94¢ per kWh in 2024 (EIA-861); the average customer lost 94 minutes of power on normal days (utility-wide, not just Grand Junction).
- Sun: 5.01 kWh per square meter per day on average, from 2.17 in December to 7.97 in June (NASA POWER). Our rough estimate: about 1,460 kWh a year per kW of panels.
- Climate: about 830 cooling degree-days and 6,210 heating degree-days a year (base 65°F, NASA POWER), so heating is the big load.
- Top hazards in Mesa County: lightning “very high”, landslides “relatively high” and avalanches “relatively high” (FEMA National Risk Index; overall county risk rated “relatively low”).
- Public charging: 136 ports at 68 locations in Grand Junction, 36 of them DC fast (AFDC, October 20, 2026).
Your utility and what it means
Public Service Co of Colorado is an investor-owned utility and served about 1,365,053 home customers in 2024; its 15.05¢ average was below the 17.0¢ statewide average for July 2026. Holy Cross Electric Assn, Inc is a member-owned cooperative utility and served about 49,982 home customers in 2024; its 12.04¢ average was below the 17.0¢ statewide average for July 2026. Grand Valley Power is a member-owned cooperative utility and served about 17,268 home customers in 2024; its 15.94¢ average was below the 17.0¢ statewide average for July 2026. Those are utility-wide averages, not a quote for your address; your own bill is the real number.
For reliability, Public Service Co of Colorado reported 158 minutes per customer without major storms in 2024, more than the statewide figure of 119 (EIA-861). Utility-wide numbers hide a lot: a home at the end of a long rural line usually has more outages than the average.
Net metering, export rates and incentives are set at state level and by each utility. Start with the Colorado guide and then ask your utility for its current interconnection steps before you sign anything.
Backup power in Grand Junction
- Lightning (very high): Lightning causes short outages and damages electronics. Surge protection and a battery that switches over automatically protect the things you care about.
- Heating load: a winter outage can stop a furnace blower, boiler pump or heat pump. List what your heat needs to run before choosing a generator or battery.
- Short outages: a portable power station covers phones, Wi-Fi, a CPAP and lights; a home battery switches over automatically.
Size your setup with the generator sizing tool and the battery backup calculator, and compare options in backup power. Generator safety (CPSC): outdoors only, at least 20 feet from the house, exhaust away from doors and windows, never in a garage, and battery-powered carbon monoxide alarms inside. A licensed electrician should install any transfer switch, with a permit; see generator installation.
Solar in Grand Junction
By our rough estimate each kW of panels makes about 1,460 kWh a year in Grand Junction (NASA sunshine data times 365 days times 0.80 for system losses). Valued at Public Service Co of Colorado’s 2024 average of 15.05¢, that is about $220 a year per kW if all of it offsets your own use (an estimate, not a promise). Production swings with the seasons: June is the sunniest month at 7.97 and December the dimmest at 2.17, a 3.7-to-1 gap, so a battery or a bigger system helps in winter.
Check your own roof with the solar potential tool, see solar costs and net metering vs net billing, and read the steps in solar installation.
Batteries and EV charging
A home battery earns its place when outages are frequent, when your utility pays little for exported solar, or when evening prices are high; compare in home batteries and battery costs. Grand Junction has 136 public charging ports in the federal station list including 36 DC fast, but home charging is cheaper and easier: see the EV charging cost calculator and EV charger installation.
Drive on another fuel? See every alternative fuel station in Grand Junction: hydrogen, propane, natural gas, E85 ethanol, biodiesel and renewable diesel.
Permits and inspections
Solar, generator transfer switches and EV chargers normally need an electrical permit from the Grand Junction building or permitting department, or from Mesa County if you live outside city limits, and often a utility interconnection approval. We have not verified a local permit page for Grand Junction, so check the city and county websites or ask your electrician, who will know the process. Hire only a licensed electrician or installer; the Colorado guide lists the state licensing rules.
Nearby guides
More local guides: see all of Colorado, or the whole Colorado energy guide.
Get help
Are you a licensed installer in Grand Junction? Join SolutionEnergy and get requests from homeowners and businesses →
Tell us about your project and we will connect you with a licensed, independent installer who serves the Grand Junction area. It is free, there is no obligation, and only the installer you choose gets your details. Read how it works.
Grand Junction energy FAQ
Who is my electric company in Grand Junction?
Public Service Co of Colorado, Holy Cross Electric Assn, Inc and Grand Valley Power all serve parts of Mesa County. Which one serves you depends on your street, so check the top of your bill. Their 2024 home price averages differ (Public Service Co of Colorado 15.05¢, Holy Cross Electric Assn, Inc 12.04¢, Grand Valley Power 15.94¢) so it matters for solar math.
How much power will solar make in Grand Junction?
About 1,460 kWh a year per kW of panels by our estimate, so a 6 kW system would make roughly 8,760 kWh. Shade, roof direction and tilt change this; run your address through the solar potential tool for a better number.
Will a home battery keep my heat on in an outage?
It can keep a furnace blower, boiler pump or a heat pump running for a while, but long cold outages drain a battery fast without solar to recharge it. Pair it with a generator or wood or propane heat if outages here run for days.
Do I need a permit for solar or a generator in Grand Junction?
Almost always an electrical permit for a transfer switch, solar or an EV charger, issued by the city or county where you live. Your licensed electrician or installer normally pulls it. Never connect a generator to your house wiring without a transfer switch.
Sources: EIA Form 861 (2024) for utility prices and outages; NASA POWER climatology (2001 to 2025) for sun and degree-days; FEMA National Risk Index for county hazards; AFDC station locator for public charging; Census Bureau for population. Estimates are ours and are not promises; see our editorial policy. Prices and programs change, so check each program page.