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.
Fast, Reliable Solar Battery Storage & Backup Across Westlake Village
Solar battery backup in Westlake Village typically costs between $11,500 and $18,500 installed, depending on whether you’re putting in a single Tesla Powerwall 3, an Enphase IQ Battery, or a whole-home setup with multiple units. Most Westlake Village homes we see are large 1970s and 1980s planned-community builds, so they lean toward two-battery systems for true whole-home coverage during SCE outages. We serve the 91359 and 91361 ZIP codes and can usually have someone out to your property within one business day to look at your panel, your roof, and your actual utility bill. Call (877) 550-6892 and Gus will answer his own phone.
Why Gus’s Solar Is Westlake Village’s Preferred Solar Battery Storage & Backup Company
Gus Petrakis started this company in 2011 and put his own name on the truck from day one. We’re not a door-knocking outfit that disappears after the paperwork clears. We’re a local shop with a published address, a state license, and an owner who still comes out on installs in Westlake Village to check the work himself. When you call us about a battery backup, you talk to a person who knows the difference between a North Ranch HOA submittal and a lakefront tract review. That matters here.
We’ve spent years working in the Conejo Valley, and Westlake Village has a reputation among solar contractors for being the most layered city to pull permits in. The dual-jurisdiction issue, the HOA architectural committees, the aging tile roofs. We know that pipeline cold. We also know the utility math. SCE’s time-of-use rates punish solar-only homes after 4 pm, and a battery is the fix. We do the year-25 output math off your actual bill, not a brochure estimate. Take two weeks to think about it. The price will be the same.
Our Solar Battery Storage & Backup Services in Westlake Village
Tesla Powerwall Installation
A Tesla Powerwall 3 installation in Westlake Village runs $13,000 to $16,500 for the first unit, including gateway, wiring, and permit handling across both jurisdictions when your 91361 address splits the county line. We’ve installed Powerwalls in everything from small lakefront condos to sprawling North Ranch estates. The Powerwall 3’s higher inverter output handles large A/C condenser startups well, which matters when whole-home backup is the goal and the house is 3,800 square feet with two HVAC zones.

Enphase IQ Battery Installation
Enphase IQ Battery systems in Westlake Village typically run $11,500 to $14,500 for a 10 kWh system, and they integrate cleanly with existing Enphase microinverter arrays. If your home already has an Enphase solar system and you just want backup for critical loads like refrigerators, medical devices, or a home office, this is often the leanest path. We configure these for either self-consumption or full backup mode depending on how SCE’s NEM 3.0 rates hit your bill.

Whole-Home Backup Power
Whole-home backup in Westlake Village generally needs two batteries, which puts you in the $24,000 to $32,000 range installed. These 1970s and 1980s homes are large, with multiple refrigerators, pool pumps, and electric ovens. A single battery will not cover all of that during a Santa Ana wind-driven outage. We engineer the system with load-shedding circuits and soft-starts so your aging A/C condenser doesn’t trip the battery on startup. We quote the year-25 output, not the day-one brochure number.

Battery Retrofit for Existing Solar
If you already have panels on your Westlake Village roof and want to add storage, a retrofit typically runs $12,000 to $17,500 depending on your inverter setup and whether we need to add an islanding switch. We see a lot of homes that went solar in 2015 or 2016 under NEM 2.0, when batteries didn’t make financial sense yet. Now, under NEM 3.0’s export math, adding a battery changes the picture entirely. We can also handle battery expansion if you started with one Enphase unit and want to scale up to whole-home coverage.

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 Westlake Village
We work with FranklinWH, Panasonic, and Canadian Solar battery and storage equipment, along with Tesla Powerwall and Enphase systems. When a battery enclosure in the 91361 ZIP needs a warranty replacement or a firmware issue locks the system during peak hours, we can usually be there the same week. We keep common inverter and gateway parts on hand so a retrofit in Westlake Village doesn’t stall waiting on a distributor three states away.
Common Solar Battery Storage & Backup Problems We See in Westlake Village Homes
- HOA architectural review rejections: Communities like North Ranch and the lakefront tracts routinely require battery enclosures to match tile roof color, stucco texture, or racking profile. If the architectural review letter isn’t handled before permit submittal, the whole job stalls for 60 to 90 days. We draft and submit that letter first.
- Aging tile roof decks under new battery arrays: Many 1970s Spanish-style homes in Westlake Village have original clay or concrete tile roofs. When we add a battery and the associated rooftop equipment, we pre-assess the decking under the tiles. Original clay tiles crack during penetrations if the deck wasn’t evaluated first.
- Santa Ana wind rattling outdoor battery enclosures: Hillside lots throughout the 91361 ZIP sit exposed to strong Santa Ana wind events. We’ve seen outdoor battery enclosures with loosened conduit and connection points after a single bad wind season. We use wind-rated mounting and inspect connections as part of the job.
- Dual-jurisdiction permit stalls: Because Westlake Village straddles the Los Angeles/Ventura County line, a battery backup installation at an address in the 91361 ZIP often triggers two separate permit reviews: one from the City of Westlake Village or LA County, and another from Ventura County, depending on which side of the boundary the home sits. Neighboring Thousand Oaks or Calabasas never face that dual-jurisdiction pipeline. We file both from the start so the job doesn’t sit in limbo.
A Local Insight: Why Westlake Village Is Different From Every Neighboring City
Westlake Village straddles the Los Angeles/Ventura County line, and that creates a permitting pipeline unlike anything in Thousand Oaks, Agoura Hills, or Oak Park. A battery backup installation at an address in the 91361 ZIP often triggers two separate permit reviews: one from the City of Westlake Village or LA County, and another from Ventura County, depending on which side of the boundary the home sits. Two permit desks. Two sets of inspectors. Two approval timelines that rarely line up. A generic battery installer coming from outside the Conejo Valley won’t know to check which jurisdiction applies to your exact address until the first rejection letter shows up. That’s a two-month stall you don’t need. We map that dual-jurisdiction path before we ever file a single permit, so the job moves in a straight line instead of bouncing between county desks.
Our crew recently serviced a 1970s Spanish-style home in the North Ranch community, where the HOA required a Tesla Powerwall 3 to be tucked behind a stucco enclosure and the city’s solar permit had to cross both LA and Ventura County desks because the property line splits the 91361 ZIP. We handled the architectural review letter first, then engineered the battery for whole-home backup with a soft-start on the aging A/C condenser, and finally set the system to discharge during SCE’s 4 to 9 pm peak. The homeowner’s first true-up after install showed a 92% kWh offset.
Pricing for Solar Battery Storage & Backup in Westlake Village, CA
Here’s what you’ll actually pay in Westlake Village, based on the jobs we’ve done across the 91359 and 91361 ZIP codes. A single Enphase IQ Battery retrofit runs $11,500 to $14,500. A Tesla Powerwall 3 install with gateway and panel work runs $13,000 to $16,500. Whole-home backup with two batteries lands between $24,000 and $32,000. What moves the number within those ranges: whether your panel needs a service upgrade, whether the roof deck under your tile needs reinforcement, and whether we need to run conduit through a hillside crawlspace or a long lakefront retaining wall. Bring me a bill, I’ll bring you the math. Estimates are free and the number you see is the number you pay.
We Also Serve Cities Near Westlake Village
Besides our work throughout Westlake Village, our Solar Battery Storage & Backup team serves Thousand Oaks, Agoura Hills, Agoura, and Oak Park. If you’re anywhere in the Conejo Valley and tired of called-in estimates from out-of-town crews, call (877) 550-6892.
Serving Westlake Village, CA - Our Local Coverage Area
We’re based in the Westlake Village 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 Westlake Village
Yes, it can. If your address in the 91361 ZIP sits on the Ventura County side of the boundary, your battery backup permit goes through Ventura County’s review. If it sits on the City of Westlake Village or LA County side, that’s a separate desk. Some homes, especially in North Ranch where property lines split the ZIP, require both reviews. We determine which jurisdiction applies to your exact address before filing anything. Call (877) 550-6892 and we’ll check your address for free.
Most Westlake Village homes need two Powerwalls for whole-home backup. These 1970s and 1980s builds are 3,000 to 4,500 square feet with multiple refrigerators, pool pumps, and central A/C. One battery handles critical loads. Two covers the whole house. We’ll do the load calculation off your actual panel and appliances, not a square-footage chart.
Yes, but you’ll need to work through the HOA’s architectural review committee first. Communities in Westlake Village, particularly in North Ranch and the lakefront tracts, often require enclosures that match tile color, stucco texture, or racking profile. California Civil Code 714 limits what HOAs can prohibit, but we’ve never seen a project sail through by ignoring the committee. We draft and submit the architectural review letter before we file the city permit, so the approval chain is already moving.
Under NEM 3.0, SCE pays far less for solar exported during midday, and charges much more for grid power drawn during the 4 to 9 pm peak. Adding a battery changes the math: instead of selling mid-day solar at a few cents per kWh and buying evening power at peak rates, you store your own generation and discharge it when rates are highest. For most Westlake Village solar owners, that shift cuts the payback period on the battery dramatically. We’ll run your actual bill through the numbers before you commit.
Yes. Hillside lots throughout the 91361 ZIP sit exposed to strong Santa Ana wind events, and outdoor battery enclosures need wind-rated mounting with conduit and connection points checked regularly. We also position enclosures where wind-driven debris won’t strike them. In high-exposure locations, we recommend additional bracing. This is one reason we always walk the property before quoting, not after.
Call Gus’s Solar for Battery Backup in Westlake Village
If you live in Westlake Village and you’re tired of aggressive solar salesmen who need an answer tonight, call us instead. Gus Petrakis will answer the phone, ask about your bill, and tell you honestly whether a battery makes sense for your home. If a salesman needs an answer tonight, the answer is no. Take two weeks. Think about it. The price will be the same. Call (877) 550-6892 for a free estimate and a straight answer.
Written by Gus Petrakis, Owner at Gus’s Solar, serving Westlake Village since 2011.






Before
After
Before
After
Before
After