Free bill analysis - bring a power bill, get the production math for your actual roof, panel brands like Qcells and REC compared side by side
If the pitch starts at your door and ends with "sign tonight for the special," sleep on it. The sun will still be there tomorrow; so will we.
Before
After
Before
After
Before
AfterFast, Reliable Solar Battery Storage & Backup Across Westmont
If your Westmont home already has solar panels and you’re tired of feeding the grid while paying peak rates at night, a battery changes that. In Westmont, where SCE’s 4-9pm peak pricing can be brutal, a Solar Battery Storage & Backup system typically pays for itself in 7-10 years just on bill savings. Gus’s Solar has been doing this work since 2011, and we know Westmont’s homes, permits, and panel situations better than any out-of-town outfit. Call (877) 550-6892 and we’ll give you straight numbers off your actual bill, not a brochure estimate.
Why Gus’s Solar Is Westmont’s Preferred Solar Battery Storage & Backup Company
We’re not a sales crew that parachutes into Westmont, runs a blitz, and vanishes. Gus Petrakis put his name on this company in 2011, and he still answers the phone. Calls come to a live person 24/7, not a voicemail tree, and when something goes wrong with your battery, you get Gus on the line, not a ticketing portal. That’s the whole point of the L.O.C.A.L. code we run on: Local roots, On time, Community first, Accountable, Loyal.
Westmont homeowners deal with specific things that a generic installer misses. The 90047 zip is full of 1940s and 1950s houses with 60-amp and 100-amp panels, original wiring, and shallow roofs. We know exactly what those homes need before we ever climb up. And because we’ve pulled permits through LA County DPW Building & Safety dozens of times, we don’t get tripped up by Westmont’s unincorporated status the way city-of-LA contractors do. Our techs are background-checked, uniformed, and it’s Gus’s own crew on your roof, never a sub.
Our customers in Westmont consistently mention three things: the price quoted was the price charged, the crew didn’t rush them, and when they called with a question, a person answered. That’s the reputation we built over 29 years of serving local communities, and it’s the one we protect on every job. No signature wanted tonight. Take two weeks and think about it. The price will be the same.
Our Solar Battery Storage & Backup Services in Westmont
Tesla Powerwall Installation
A Tesla Powerwall 3 installed on a Westmont home with an upgraded 200-amp panel gives you roughly 13.5 kWh of usable backup. For a family running refrigerators, lights, Wi-Fi, and a few circuits during an outage, that’s enough to keep things comfortable overnight. Most Westmont installs take one full day, with LA County DPW inspection scheduled within two to three weeks after. We program the Powerwall for time-of-use optimization so you draw stored power during SCE’s 4-9pm window and charge from solar during the day.
Enphase IQ Battery Installation
If you already have Enphase microinverters on your roof, the Westmont homes we serve often do best with an Enphase IQ 5P battery system. It integrates directly with your existing Enphase gateway, which means fewer components and a cleaner install. Enphase systems are also modular; if you need more capacity later, you add another 5 kWh unit without rewiring the whole system. That matters on Westmont’s smaller lots where wall space and electrical room are tight.
Whole-Home Backup Power
Whole-home backup means your panel, lights, furnace, fridge, and well pump all keep running when SCE goes down. In Westmont, this usually requires two or more batteries and a smart load management system, because most 90047 homes run 100-amp or 125-amp services. We’ll audit your actual loads and design a system that covers what you need, not a padded list of circuits you’ll never use during an outage.
Battery Retrofit for Existing Solar
This is the most common call we get in Westmont: homeowners who went solar between 2015 and 2021, before NEM 3.0 changed the export math, and now their panels feed the grid for pennies while they buy back power at night at premium rates. A battery retrofit fixes that. We tie a new battery into your existing inverter or swap to a hybrid inverter, then reconfigure your system to store solar for evening use instead of exporting it. The payback is real, especially for Westmont households carrying high electricity cost burdens.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Westmont
We install and service Tesla Powerwall, Enphase IQ batteries, FranklinWH aPower, and LG Chem RESU units. For Westmont customers, we keep troubleshooting parts and firmware update tools on hand for all these brands, which means less waiting when a battery throws an error code. We also work with Panasonic and Canadian Solar panels on retrofit jobs where adding a panel or two makes sense. The point is this: whatever’s on your roof, we know how to make a battery work with it.
Common Solar Battery Storage & Backup Problems We See in Westmont Homes
- 60-amp and 100-amp panels that can’t support the battery. Most Westmont homes built in the 1940s and 1950s still run original electrical services. A Tesla Powerwall needs 200-amp capacity to pass LA County DPW inspection. We caught this on a 1940s-era single-story near the 105 where the homeowner’s original 100-amp panel couldn’t handle the battery’s rapid shutdown circuits. We swapped the panel to 200 amps as part of the same job, then scheduled one combined inspection so the homeowner wasn’t left waiting.
- Assumed City of LA incentives that don’t apply. Homeowners read about City of LA battery rebates or city-specific programs and assume they qualify. Westmont is unincorporated LA County, which changes eligibility and paperwork. We’ve seen homeowners delay projects waiting for a rebate they were never eligible for. We sort this out before you sign anything.
- Batteries installed with city permit timelines, then stuck in county inspection backlog. Contractors who work across both jurisdictions sometimes schedule like they’re pulling an LADBS permit. LA County DPW Building & Safety runs on a different timeline. A Westmont battery install can sit waiting for final approval if the contractor didn’t build that into the schedule, which delays your true-up reconciliation and your bill savings.
- Urban heat island effect reducing panel and battery efficiency. Westmont sits inland from the coast, so it escapes June Gloom but gets hotter rooftop temperatures in summer. That heat lowers panel output at exactly the hours grid peak rates hit. We account for this when sizing batteries and programming discharge schedules, so you’re not drawing from the grid during the most expensive part of the day.
Pricing for Solar Battery Storage & Backup in Westmont, CA
A single Tesla Powerwall 3 installed on a Westmont home runs between $15,500 and $18,500 before incentives, including the battery, gateway, install labor, and LA County DPW permit fees. An Enphase IQ 5P retrofitted to an existing Enphase system runs $7,500 to $9,500 per unit. Whole-home backup with two batteries and a panel upgrade typically falls between $28,000 and $38,000, depending on your home’s loads. The panel upgrade itself, when needed, adds $3,500 to $5,500. Every estimate is built from your actual SCE bill, not a guess. Call (877) 550-6892 and Gus will give you the year-25 output number, not the day-one brochure figure. Estimates are free, and there’s no trip charge inside our own county.
We Also Serve Cities Near Westmont
We work throughout the South LA flatlands, including View Park-Windsor Hills, West Athens, Inglewood, and Lennox. If you’re a few blocks outside the 90047 zip, we’re still your local crew. Our dispatch is coordinated from our Los Angeles office, and we serve Westmont as a primary coverage area.
Serving Westmont, CA - Our Local Coverage Area
We’re based in the Westmont 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 Westmont
Yes. Westmont battery permits go through LA County DPW Building & Safety, not LADBS, which means a separate fee schedule and a different inspection timeline. Some contractors miss this because adjacent neighborhoods like Inglewood run city permits. We pull the right permit the first time and schedule the county inspection as part of the original timeline, so you’re not waiting weeks for final approval that was never booked. Call (877) 550-6892 and we’ll walk you through what your specific address requires.
Almost always, yes. Tesla Powerwall interconnection requires 200-amp service to pass LA County DPW inspection, and most Westmont homes from the 1940s to 1960s still carry original 60-amp or 100-amp panels. We include the panel upgrade in the same proposal, not as a surprise change order after you’ve signed. That’s why our quotes often look higher upfront than a national outfit’s: we’re quoting the actual work, not a teaser that gets padded later. Bring us a bill and we’ll bring you the math, all in writing.
Westmont’s inland location means you get more direct sun than coastal communities that sit under the June Gloom marine layer, so your panels produce more total kilowatt-hours. But the same inland position keeps rooftop temperatures elevated in summer, which reduces panel efficiency slightly during the hottest afternoons, precisely when grid demand and SCE’s peak rates climb. A properly sized battery compensates: we program it to discharge during the 4-9pm window and recharge during cooler morning hours when panels run more efficiently. That’s a Westmont-specific design decision, not a generic setting.
Most Westmont homeowners who retrofitted existing solar with a battery in 2024-2025 see payback in 7 to 10 years, depending on their SCE rate plan and household usage. Under NEM 3.0, exported solar earns roughly 75% less than it did under older net metering rules, so storing solar and using it during the 4-9pm peak window cuts your monthly bill more than anything else you can do. For a typical 90047 home that runs $250 to $400 per month in electricity, a battery retrofit typically shaves $60 to $110 off every bill. The exact number depends on your bill, which is why we quote from your actual usage, not a generic estimate.
Because Westmont is unincorporated, unincorporated LA County, and a lot of contractors assume City of LA rules apply since the neighborhoods around it are city jurisdictions. They pull the wrong permit, schedule with the wrong inspection office, or quote city fee schedules that don’t match county charges. That causes delays, failed inspections, and homeowners stuck paying for a system that hasn’t been approved. We’ve done enough LA County DPW battery permits to know the process cold, including the inspection backlog timing. If a salesman needs an answer tonight, the answer is no. We’ll give you the county-compliant timeline in writing.
If you’re in Westmont and want a straight answer about battery storage, call Gus’s Solar at (877) 550-6892. A live person answers, day or night. We’ll quote from your real bill, explain exactly what your home’s electrical service can handle, and give you the year-25 number, not the day-one brochure. Estimates are free, there’s no trip charge in our own county, and the 90-Day Done Right Promise is in writing on every job: if it’s not done right, Gus makes it right.
Written by Gus Petrakis, Owner at Gus’s Solar, serving Westmont since 2011.