When the grid goes down, a home battery keeps your essentials — refrigerator, lights, internet, medical devices — or your whole home running. We size backup to what matters most to you.
In the desert, outages during peak summer heat are more than an inconvenience. Battery backup keeps cooling and critical loads alive until the grid returns.
Essential-loads backup works by moving selected circuits onto a separate subpanel that the battery powers during an outage. Common picks include the refrigerator and freezer, a few lighting circuits, the internet router, ceiling fans, the garage door opener and outlets for phones and laptops. Choosing carefully stretches runtime, since each circuit you add draws from the same stored energy.
For households that rely on CPAP machines, oxygen concentrators or refrigerated medication, backup power is often the main reason to get a battery. Most systems switch over automatically within moments when the grid drops, so equipment keeps running with little or no interruption. It is worth listing every medical device during the assessment so the circuits feeding them are included on the backup side.
Las Vegas summers bring two kinds of outage risk: record electricity demand during extreme heat, and monsoon storms that roll through with high wind, dust and lightning. Either can leave a neighborhood without power for hours. A battery charged by your own panels keeps essentials going through those events, and a well-planned system can keep at least some cooling running until the grid returns.
A generator needs fuel on hand, has to run outdoors because of exhaust, and can be noisy enough to bother neighbors or run into HOA rules. A home battery is quiet, switches on by itself and recharges from solar instead of a gas can. Generators can run as long as fuel lasts, while a battery depends on capacity and sunshine, which the desert rarely lacks.
Two ratings decide how a battery performs. Capacity, measured in kilowatt-hours, sets how long it can keep things running. Power output, measured in kilowatts, sets how many appliances it can run at the same moment. A system with plenty of capacity but limited output may run a fridge for a long time yet struggle to start an AC unit. Good sizing balances both.
A backup battery does not have to sit idle waiting for the next outage. Most can keep a set reserve for emergencies and use the rest each evening to offset NV Energy time-of-use pricing. If you want the AC and everything else covered as well, compare this approach with whole-home backup, or see common questions on our FAQ page.