Friday night’s storms were a reminder that a power outage can interrupt an ordinary evening anywhere in the Phoenix area. A properly designed home battery system can help keep selected essentials running when utility service goes down.
In its October 30, 2026 report, KTAR described storm-related outages affecting more than 5,000 APS and SRP customers around 8 p.m. Most issues had been resolved by 9 p.m., although about 1,000 APS customers were still without service at that point. Those are snapshots from the report, not current outage counts.
What a home battery can do during an outage
A battery does not stop a utility outage. With compatible backup equipment and proper installation, it can supply the circuits your system is designed to support while the grid is unavailable. That might include a refrigerator, selected lights, outlets and your home networking equipment. Internet service still depends on your provider’s network remaining available.
Air conditioning, electric cooking and other large loads need special attention. Do not assume one battery will run an entire Arizona home. Ask an installer which appliances can operate together and what happens when demand exceeds the system’s output.
Already have solar? Check your outage capability
Standard grid-connected solar alone generally shuts down during a utility outage for safety. Backup operation requires a system designed for it, including compatible controls that safely separate the home from the grid. Have your installer confirm your existing solar equipment, battery compatibility and the circuits included in your backup plan.
APS explains how rooftop solar behaves during an outage. Its Storage Rewards FAQ also describes how designated backup circuits are supported while sufficient battery capacity remains.
How long could your essentials stay on?
Runtime depends on usable stored energy, the charge available when the outage starts, the appliances running, system losses and whether compatible solar can recharge the battery. Battery power output determines which loads it can operate at once; energy capacity helps determine how long those loads can run.
Ask for an estimate based on your actual priority loads, including nighttime operation and cloudy weather. Review the battery’s backup reserve setting so you understand how much energy is being held for an unexpected outage.
Five questions to ask before buying
Which circuits and appliances will this installation back up?
Can it start and run my air conditioner, and what else can run at the same time?
What runtime should I expect at my chosen reserve level?
Can my solar recharge the battery during an outage?
What is the full installed cost, including electrical work, and who handles local service?
Build a backup plan for your Arizona home
Whether you are in Phoenix, Mesa, Chandler, Gilbert, Scottsdale or elsewhere in the Valley, start with what you want to keep powered. Your APS or SRP rate plan and existing solar also matter when comparing everyday battery use with outage protection. Bill savings and backup runtime depend on your home and system design.
Get My Free Battery & Backup Review. Tell us your utility, ZIP code, existing solar and priority appliances. A bill photo is optional. With your permission, Backup Ready can connect you with an independent local installer for a home-specific assessment. Free, with no obligation to buy.
Still comparing approaches? Explore battery and generator backup options or try our backup cost calculator.
Sources: KTAR, October 30, 2026; APS rooftop solar guidance and Storage Rewards FAQ. Published October 31, 2026. Backup Ready may receive referral compensation.
