Northern Arizona Energy Guide: Solar, Batteries, Backup, EV

In short: In Flagstaff and Prescott the big energy risk is wildfire, not heat. APS, the main utility, cut power to high-risk Flagstaff-area communities for most of April 22, 2026, its first planned wildfire shutoff. APS homes paid about 16.5¢ per kWh in 2024, and panels still make about 1,600 to 1,700 kWh per kW a year (our estimate).

Below: what the shutoff program means for backup power, APS’s solar and battery rules, winter and sun in the high country, and permits. For statewide rules (the Form 310 solar credit, tax exemptions, contractor licensing), see our Arizona energy guide.

Northern Arizona at a glance

• Arizona Public Service (APS): the utility for Flagstaff and Prescott. About 16.5¢ per kWh for homes in 2024; 87 minutes without power per customer with major events, 81 without (EIA-861, 2024, APS’s whole Arizona system; EIA does not split it by region).
• Other utilities: tribal, municipal and co-op utilities serve some outlying areas of Coconino and Yavapai counties (EIA-861). Check your bill.
• Planned wildfire shutoffs: APS lists Coconino and Yavapai among the five counties where shutoffs can happen. Its first one ran from 9 a.m. to about 6:45 p.m. on April 22, 2026, in the Flagstaff area.
• Sun: about 5.56 kWh per square meter per day in Flagstaff and 5.70 in Prescott (NASA POWER, 2001–2020), against 5.85 in Phoenix. Our rough estimate: about 1,625 kWh a year per kW in Flagstaff and 1,665 in Prescott.
• Top hazards: FEMA’s National Risk Index (December 2025) rates Coconino County “very high” for lightning and winter weather and “relatively high” for wildfire and inland flooding. Yavapai County is “very high” for lightning and “relatively high” for wildfire, winter weather and inland flooding.
• Public charging: 137 public charging ports at 43 locations in Flagstaff and 41 at 13 locations in Prescott (AFDC, October 2026).

Your utility and what it means

APS is regulated by the Arizona Corporation Commission and uses net billing for new solar. Power you use as your panels make it saves the full retail price; exports earn the Resource Comparison Proxy (RCP) rate. Customers who join between September 1, 2026 and August 31, 2027 get 5.554¢ per kWh, locked for 10 years from interconnection (APS Rate Rider RCP). APS’s on-peak hours are 4 to 7 p.m. on weekdays.

• Wildfire shutoff alerts: APS sends notices by email, text or phone, starting days ahead, and posts maps at aps.com/psps. Keep your contact details current, and if someone at home depends on powered medical equipment, ask about APS’s Medical Care Program.
• Storage Rewards: APS’s five-year pilot pays $110 per average kW your battery supplies during summer conservation events (May to October, up to 60 days, between 4 and 10 p.m.). You can opt out of any event, for example when a fire-weather shutoff is forecast and you want a full battery.
• EV Overnight plan: 8.468¢ per kWh from 11 p.m. to 5 a.m. on weekdays, all year, for households with an EV.

Backup power in Northern Arizona

Here backup is about two things: shutoffs in fire weather and winter storms. The April 2026 shutoff came with strong winds, dry vegetation and low humidity, earlier in the year than usual, and lasted most of a day. Unlike a storm outage, a shutoff usually comes with notice, so you can charge a battery and fuel a generator before it starts. In winter, keep in mind that most furnaces need power for the blower and controls.

• A day-long shutoff: a home battery sized for the fridge, furnace fan, well pump (if you have one), lights and internet, with solar to top it up.
• Multi-day winter outages or rural homes: a standby generator on propane or natural gas with a transfer switch; see generator installation.
• Short outages: a portable power station for phones, Wi-Fi, a CPAP and lights.

Compare the options in our backup power guide, and use the battery backup calculator and generator sizing tool. Never run a generator in a garage or on a covered porch: outdoors only, at least 20 feet from the house, exhaust away from openings, and carbon monoxide alarms inside (CPSC). In fire season, keep the generator and its fuel clear of dry brush.

Solar in Northern Arizona

Altitude and clear skies keep high-country solar strong: Flagstaff gets only about 5% less sun over a year than Phoenix by NASA’s numbers, though December sun is only about a third of June’s. By our rough estimate a kW of panels in Flagstaff is worth about $265 a year if you use all of its power at APS’s 2024 average price, or about $90 if you export all of it at 5.554¢. Prescott is a little higher. These are estimates, not quotes. Snow and tall pines matter more here than in the desert, so ask an installer to check shading through the year.

Federal home solar credits ended after 2025; Arizona’s credit and tax exemptions are on the state page. Try the solar potential tool and solar savings calculator, and read how solar installation works, solar costs and net metering vs net billing. For cabins far from lines, see off-grid power and the off-grid planner.

Home batteries in Northern Arizona

A battery is the quietest answer to a planned shutoff. Charge it full when APS warns of fire weather, and it carries essentials until the lines are back. With solar it also covers APS’s 4 to 7 p.m. peak, and in summer it can earn Storage Rewards. Cold matters too: many batteries limit charging in freezing temperatures, so ask where yours should go in a garage or a heated space. See home batteries, battery costs and battery installation.

EV charging in Northern Arizona

Flagstaff has 137 public ports, but residents save most by charging at home overnight. At about 30 kWh per 100 miles, our estimate is about $4.90 per 100 miles at APS’s 2024 average price, or about $2.50 on the EV Overnight plan. Range drops in cold weather, so budget a bit more per mile in winter. A Level 2 charger needs a 240-volt circuit by a licensed electrician; see EV charger installation and the EV charging cost calculator.

Drive on another fuel? See every alternative fuel station in Flagstaff: hydrogen, propane, natural gas, E85 ethanol, biodiesel and renewable diesel.

Permits and inspections

• City of Prescott: the Building Safety Division takes applications through PrescottPermits.com and has a photovoltaic solar system permit checklist. For a generator or EV charger, ask the permit center what applies.
• City of Flagstaff: the city’s building safety office issues permits inside city limits; we could not load its website to check current solar guidance, so call or visit first.
• Outside city limits: Yavapai or Coconino County, depending on where you live.
• Utility: APS must approve solar and grid-tied batteries before they are switched on.
• HOAs: under A.R.S. 33-1816 an HOA cannot ban solar, but it can set reasonable placement rules. Get approval first.

Cities we cover

• Prescott
• Flagstaff

Get help in Northern Arizona

The buttons start with Flagstaff; you can change the city in the form.

Tell us about your project and we will connect you with a licensed, independent installer who serves the Northern Arizona area. It is free, there is no obligation, and only the installer you choose gets your details. Read how it works.

Northern Arizona energy questions

Has APS ever shut off power for wildfire risk?

Yes, once so far. On April 22, 2026, APS shut off power to high fire-risk communities in the Flagstaff area from 9 a.m. until about 6:45 p.m. because of strong winds, dry vegetation and low humidity. APS says it was the first time conditions were extreme enough since it created the program in 2024.

How do I know if my home is in an APS shutoff area?

Enter your address on the map at aps.com/psps. APS lists parts of Coconino, Gila, Navajo, Pinal and Yavapai counties as possible shutoff areas. If you are inside one, keep your contact details current with APS so you get the advance notices.

Is solar worth it in Flagstaff?

The sun is good: about 5.56 kWh per square meter per day, only about 5% below Phoenix. By our rough estimate a kW of panels makes about 1,625 kWh a year. Because APS pays 5.554¢ for exports, the value depends on how much you use at home; shade from pines and winter snow matter, so get a site check.

Battery or generator for a fire-season shutoff?

For a shutoff of a day or less, a battery is quiet, needs no fuel and can be fully charged once the warning comes. For longer winter outages or a well pump and furnace, a propane or natural gas standby generator runs longer. Many rural homes combine both. Either way, a licensed electrician should do the connection.

Sources

EIA-861, 2024 data (price = residential revenue ÷ sales; service territory by county); APS Rate Rider RCP (effective September 1, 2026), PSPS page, April 22, 2026 shutoff release, Storage Rewards and EV Overnight plan; City of Prescott Building Safety; A.R.S. 33-1816; NASA POWER, 2001–2020; FEMA National Risk Index, December 2025; AFDC station data; CPSC. All read October 2026. Estimates are ours and labelled.