Power goes out. It happens here more than people expect — wildfire-related shutoffs, grid stress during heat events, equipment failures. And with SDG&E’s rates now among the highest in the country, people are also thinking about backup power in a different way: not just “what do I do when the lights go out,” but “how do I stop being completely dependent on this utility.”
There are two main options: a standby generator or a home battery system. Both work. Both have real trade-offs. And what makes sense for your home depends on a few specific things — not just what sounds better in a brochure.
Here’s the real breakdown from the electrician’s side of it.
How Each System Actually Works
A standby generator is a natural gas or propane unit installed outside your home, connected to your electrical panel through a transfer switch. When the power goes out, it detects the outage, starts up automatically within seconds, and runs your home on its own generated power until the grid comes back. It runs on fuel from a line or a tank, so it can operate indefinitely as long as the fuel keeps flowing.
A home battery system — Powerwall, Enphase IQ Battery, Franklin WH, and others — stores electricity and releases it when you need it. It charges from the grid during off-peak hours, from solar if you have it, or both. When the grid goes down, it switches over and powers the circuits it’s connected to. When the stored power runs out, it runs out — unless it’s recharging from solar simultaneously.
Where Generators Win
Generators win on one thing: runtime. Natural gas lines aren’t usually affected by the same outages that knock out your electricity. You can run a whole-home generator for days without worrying about it running dry. For extended outages — the kind that come from major wildfire shutoffs in San Diego County — that matters a lot.
They’re also typically cheaper upfront for whole-home coverage. A properly sized standby generator running your entire house costs less than a battery system of equivalent capacity.
If you have medical equipment at home, run a business from the property, or have gone through a multi-day outage and sworn never again, a generator is worth serious consideration.
Where Batteries Win
Batteries win on almost everything else.
Silence. A generator is loud. Not “you can kind of hear it” loud — genuinely disruptive to neighbors and to life inside your house. A battery system makes no noise at all.
No fuel to manage. No gas line dependency, no propane tank to refill, no worrying about whether the fuel runs out during a long shutoff.
SDG&E’s peak pricing. This is the one that’s become increasingly relevant in 2026. A battery doesn’t just help when the grid goes down — it actively reduces your bill every single day by powering your home during the 4–9 p.m. peak window instead of drawing from the grid at the highest rates. A generator sits idle until there’s an outage. A battery is working for you constantly.
Solar pairing. If you have solar or are planning to add it, a battery is the natural complement. You generate during the day, store it, and use it at night during peak hours. The generator can’t do any of that.
No exhaust, no combustion. No carbon monoxide risk. No permits for gas line work. Cleaner installation overall.
The Real Question: What Are You Actually Protecting Against?
This is where most people make the decision.
If your primary concern is extended outages — multiple days with no grid, no solar generation, and no way to recharge — a generator is the more reliable solution. It just keeps running.
If your primary concern is short to medium outages (a few hours to a day) combined with daily bill reduction and a home that’s already solar-equipped or solar-ready, a battery system is likely the better fit. Most grid outages in San Diego fall into this category.
A lot of homeowners in 2026 are choosing battery first, generator as a backup consideration later. The economics have shifted. Battery systems have come down significantly in price, and the daily bill savings through TOU pricing offset a meaningful chunk of the installation cost over time.
What the Electrical Side Looks Like
Either system requires real electrical work — this isn’t a plug-and-play situation for either option.
A generator install requires a transfer switch or interlock kit at your panel, proper sizing based on your home’s load, and in most cases coordination with SDG&E for interconnection if it’s a whole-home unit. Done wrong, back-feeding the grid is a serious safety hazard for line workers.
A battery install requires dedicated wiring, proper panel integration, and correct circuit configuration to determine what loads the battery covers. Most battery systems also need their own sub-panel or critical loads panel. If your main panel is old or already at capacity, that work needs to happen first.
Either way: permitted, inspected, done right.
What We're Seeing in San Diego Right Now
Honestly? Battery systems are winning the conversation in most of the homes we’re working in. The combination of SDG&E’s TOU pricing, San Diego’s high solar adoption rate, and the improving economics of battery storage has shifted the math.
Generators still make clear sense for certain homes — larger properties, longer outage exposure, homes without solar — and we install both.
But if someone calls us and says “I want to stop being so dependent on SDG&E,” the answer is almost always a battery system conversation first.
The Bottom Line
Neither option is automatically better. The right one depends on your home’s load, your outage history, whether you have solar, and honestly, how much the noise and fuel management of a generator bothers you.
What we’d recommend: before you buy either one, have an electrician assess your panel and your current load. That assessment tells you what size system you actually need — and whether any panel work has to happen first. Skipping that step leads to either an undersized system that disappoints you or an oversized one that cost more than necessary.
Von Dueber Electric installs both. We’ll give you the straight answer on which makes more sense for your home.
