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AfterFast, Reliable Solar Battery Storage & Backup Across Lomita
Solar battery storage in Lomita typically runs $8,500-$16,500 installed for a single battery system, and most retrofits take our crew one to two days on-site. The catch in 90717? Sizing that battery without accounting for the Palos Verdes Peninsula’s late-afternoon shadow means you’ll come up short exactly when peak rates hit. We’ve been doing Solar Battery Storage & Backup work in Lomita long enough to know that a due-south array off Narbonne Ave behaves differently than one in Torrance. Call (877) 550-6892 and we’ll look at your actual utility bill before we quote a single number.
Why Gus’s Solar Is Lomita’s Preferred Solar Battery Storage & Backup Company
Gus Petrakis founded this shop in 2011, and he still answers his own phone. That matters in a city like Lomita, where half the ranch homes were built before battery storage was even a concept and the other half have had a door-knocker promise them the moon. There’s no sales script here. Gus’s crew does the install themselves, background-checked and uniformed, and the 90-Day Done Right Promise is in writing on every job. If it’s not right, one call brings Gus back.
We also know what Lomita’s building department and SCE will ask for before you’re allowed to flip the switch. A battery that a national outfit prices without seeing your panel? That’s the one that stalls mid-permit. We flag it before you spend a dollar.
Our Solar Battery Storage & Backup Services in Lomita
Tesla Powerwall Installation
A Tesla Powerwall 3 installed in Lomita runs $11,500-$15,000 before any incentives, depending on whether you need a main panel upgrade. For homes in the southern half of the city, we typically configure Powerwalls to charge from grid during off-peak hours, because the Peninsula’s shadow cuts rooftop production just as the evening peak begins.
Enphase IQ Battery Installation
Enphase IQ Battery systems run $8,500-$12,500 for a single 5P unit in 90717, installed. They’re a good fit for Lomita’s smaller ranch homes where wall space is tight and you want modular expansion later. The Enphase ecosystem also handles partial-home backup cleanly when you don’t need to run the air conditioner through an outage.
Whole-Home Backup Power
Whole-home backup in Lomita typically means two to three batteries plus a smart load panel, landing between $22,000 and $38,000 installed. The deciding factor is almost always your electrical panel’s age. Homes off Pennsylvania Ave with original 100-amp panels can’t support the inverter load without a panel swap, which adds $2,500-$4,000 to the job. We’ll tell you that on the first visit, not after the permit gets kicked back.
Battery Retrofit for Existing Solar
If you already have panels but no storage, a retrofit in Lomita runs $9,000-$16,000 depending on your inverter and panel situation. This is the majority of our battery work in the city. Most existing arrays here were sold pre-NEM 3.0, and the export rates have since collapsed, which means your true-up is climbing. A retrofit stops that bleed.
Time-of-Use & NEM 3.0 Optimization
Under NEM 3.0, the value of solar exports dropped roughly 75% for new systems in SCE territory. That math changed everything for Lomita homeowners. We program your battery to charge when rates are cheap, discharge when they’re expensive, and hold reserve for outages. The result is a payback period that actually reflects your year-25 output, not a brochure number from day one.
Battery Replacement & Expansion
If you’re outgrowing an older battery or one has reached end of life, we handle replacement and expansion on Lomita homes without starting from scratch. Adding a second or third battery alongside an existing system runs $7,500-$13,000 depending on brand and configuration. Often the smartest move is swapping the old battery for a FranklinWH unit with better cycle life.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Lomita
We work with FranklinWH, Tesla, Enphase, and SolarEdge systems every week in Lomita, and our truck stock includes common breakers, CTs, and connectors for these brands, which means fewer return trips to the warehouse and faster completions for 90717 homeowners. If your existing inverter is SolarEdge and you want to add storage, we can plan the integration without replacing gear unnecessarily. If it’s an older string inverter that won’t talk to a modern battery, we’ll say so plainly and price the upgrade honestly.
Common Solar Battery Storage & Backup Problems We See in Lomita Homes
- Late-afternoon production cliff from the Peninsula’s shadow. South-facing arrays in the southern half of Lomita lose over an hour of generation starting around 3-4 PM. Batteries sized on generic South Bay assumptions run empty during the evening peak, and the homeowner sees it in their true-up.
- Legacy Federal Pacific or Zinsco panels blocking interconnection. SCE reviewers and the local AHJ flag these panels on permit review. We’ve seen Lomita homeowners blindsided by a $2,000-$3,500 panel changeout they were never told to expect. We check this before the proposal, not after.
- June Gloom marine-layer days leaving batteries undercharged. When the coastal layer sits over 90717 in early summer, your panels underproduce compared to inland projections. Generic battery programming then drains your reserve without a plan to refill it. We correct for the marine layer in our production modeling.
- Original 100-amp panels unable to support battery inverters. Most Lomita ranch homes from the 1950s and 60s still carry their original service. A modern battery inverter draws more than that panel can backfeed, so the interconnection stalls until a main panel upgrade is pulled into scope.
Pricing for Solar Battery Storage & Backup in Lomita, CA
Here are the ranges we quote in Lomita, built off actual local jobs:
| Service | Typical Lomita Range |
|---|---|
| Single battery installation (Enphase IQ 5P or Tesla Powerwall 3) | $8,500-$15,000 |
| Whole-home backup (2-3 batteries + smart panel) | $22,000-$38,000 |
| Battery retrofit for existing solar | $9,000-$16,000 |
| Battery replacement or expansion | $7,500-$13,000 |
| Main panel upgrade (when required) | $2,500-$4,000 |
What moves the number? Your panel’s age, your inverter’s compatibility, and whether the Peninsula’s shadow means you need one battery or two to get through the evening peak. Bring us a bill, we’ll bring you the math. Call (877) 550-6892 for a free estimate.
We Also Serve Cities Near Lomita
While we’re in Lomita most weeks, our crews also serve Torrance, Rolling Hills Estates, San Pedro, and West Carson. If you’re in one of those neighborhoods and want a second opinion on a written estimate, that’s free too.
Serving Lomita, CA - Our Local Coverage Area
We’re based in the Lomita area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs - Solar Battery Storage & Backup in Lomita
Yes, you need one. The Palos Verdes Peninsula sits directly south of Lomita, and from about 3-4 PM onward the hills cast measurable shade on south-facing rooftops in the city’s southern half. A battery sized on South Bay averages will come up short during evening peak rates. We run the shade model before we quote a battery size, not after the system underperforms.
No. SCE interconnection reviewers and the Lomita AHJ flag Federal Pacific Stab-Lok and Zinsco panels on permit review as a safety issue. You’ll need a main panel upgrade before a battery inverter can be approved, which adds $2,500-$4,000 to the project. We check for this on the first visit so there’s no surprise. Call (877) 550-6892 and we’ll come take a look.
During June Gloom, the coastal marine layer suppresses early-summer solar production, so your panels generate less than inland LA projections suggest. If the battery’s charge logic assumes inland solar days, you’ll end up with no evening reserve. We correct for 90717’s marine-layer patterns in the battery programming so your backup reserve stays intact.
In Lomita, a slightly west-of-south azimuth or an east-west split often outperforms a textbook due-south array because the Peninsula shadows due-south panels in the late afternoon. The west-facing portion keeps producing through the evening peak, exactly when your battery wants to be discharging. We’ll model both orientations against your actual roof before recommending one.
Under NEM 3.0, surplus solar exports earn roughly 75% less than they did under the old net metering rules. That means every kilowatt-hour you can store and use instead of exporting is worth far more to you. In Lomita, where the evening peak aligns with the Peninsula’s shadow cutting production, a battery captures value that your panels alone can’t. For an exact payback, call (877) 550-6892 and we’ll run the numbers on your actual bill.
Ready to stop paying peak rates for power your roof already made? Call Gus’s Solar at (877) 550-6892. We’ll walk your roof, check the panel, run the shade model, and give you a written price that covers year 25, not just the day the system goes live. Take two weeks to think about it. The price will be the same.
Written by Gus Petrakis, Owner at Gus’s Solar, serving Lomita since 2011.