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 Crestline
When the power cuts out up here, it doesn’t feel like an inconvenience. It feels like a mountain problem. The trees are dense, the roads are winding, and the grid is the last thing SCE fixes when a storm or fire risk rolls through. A whole-home battery system in Crestline isn’t about saving a few cents on your bill. It’s about keeping your fridge running, your well pump alive, and your heat on when the Public Safety Power Shutoff hits at 2 a.m. Our Solar Battery Storage & Backup team knows exactly how that feels because we service Crestline homes every week, not once a quarter.
We show up within 24 to 48 hours for most Crestline calls. Call (877) 550-6892 and a live person answers, day or night, not a voicemail tree.
Why Gus’s Solar Is Crestline’s Preferred Solar Battery Storage & Backup Company
Gus Petrakis founded Gus’s Solar in 2011 and put his own name on the truck. When you hire us for battery storage in Crestline, Gus is the one who shows up, walks your property, and tells you honestly whether you need a $9,000 retrofit or a $20,000 whole-home backup. He doesn’t hand that conversation to a sales rep from another state. He doesn’t ask you to sign anything tonight. His standing rule: if a salesman needs an answer tonight, the answer is no.
Crestline homeowners tell us the same thing over and over: they got burned by a door-knocker who quoted one number on the phone and another at the door. We publish our pricing and build the quote off your actual SCE bill. Bring me a bill, I’ll bring you the math. That’s the Gus’s Solar way, and it’s held up for 14 years across the San Bernardino mountains.
Our crews are background-checked, uniformed, and they’re our own. We do not subcontract. The person who installs your Enphase IQ Battery or Tesla Powerwall is the same person who answers your question six months later when you call about an error light. And if something isn’t right, the 90-Day Done Right Promise means one call brings Gus back, in writing, on every job.
Our Solar Battery Storage & Backup Services in Crestline
Tesla Powerwall Installation
In Crestline, the Tesla Powerwall 3 is the most common battery we install for whole-home backup. It handles the snow load conversation because it’s floor or wall mounted in the garage, not on the roof, and it pairs cleanly with existing solar arrays that were installed before NEM 3.0 changed the economics. A typical Crestline home with a 200-amp panel and average daily usage runs one Powerwall 3 at around $13,500 to $16,000 installed, before any SGIP rebates or tax credits.

Enphase IQ Battery Installation
The Enphase IQ Battery system works well for Crestline cabins where roof space is already tight and the solar array is smaller. Because Enphase uses microinverters, each panel and battery unit operates independently, which means snow covering one section of panels doesn’t kill the entire array’s output. For a retrofit to an existing Enphase solar system, we typically see Crestline projects land between $9,000 and $12,000 for one IQ Battery 5P, with installation included.

Whole-Home Backup Power
Whole-home backup is the serious answer for Crestline residents who live on the south side of Lake Gregory or up toward the Rim of the World High School, where power lines run through dense ponderosa pine and outages last longest. We design the system so your refrigerator, furnace blower, well pump, lighting, and a few kitchen outlets stay live when SCE cuts power. Depending on your panel, this usually means two Powerwall 3 units or a FranklinWH aPower system, landing between $22,000 and $30,000 in Crestline before incentives.

Battery Retrofit for Existing Solar
If you already have panels on your Crestline cabin but no storage, a retrofit is the most valuable upgrade you can make under NEM 3.0. The old net metering rules paid you nearly retail for solar you pushed back to the grid. The new rules pay pennies. A battery lets you keep that power and use it at night when SCE rates spike. Most Crestline retrofits run $11,000 to $18,000 depending on battery size and whether your existing inverter needs replacement.

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 Crestline
We install and service Tesla Powerwall, Enphase IQ, FranklinWH, Panasonic, Canadian Solar, and JinkoSolar systems. Because we’re based in the Inland Empire and dispatch our own crew up the 18 to Crestline every week, we keep common battery parts and monitoring hardware on hand. That means when a Crestline system throws an error code, we don’t wait on a two-week parts lead time from a warehouse in Texas. We come up, we diagnose, we fix. If you bought a battery from a now-defunct installer, we’ll take over monitoring and repair it. You don’t need the original company to keep your system alive.
Common Solar Battery Storage & Backup Problems We See in Crestline Homes
- Undersized panels and 100-amp electrical services. Most Crestline cabins were built in the 1940s through the 1960s as weekend retreats near Lake Gregory. The electrical panels are often 100 amps, and a battery system plus an EV charger plus a modern kitchen will trip that. We usually recommend a main panel upgrade before or alongside the battery install, which adds about $3,000 to $5,000 in Crestline.
- Tree shading on the one usable roof plane. The dense ponderosa pine and incense cedar canopy in Crestline means the south-facing roof section with actual sun is often the same section where California Fire Code setbacks from the ridge and eaves are eating into usable area. We measure this during the site survey and tell you honestly whether your roof will support enough solar to make a battery worthwhile, or whether ground-mounted panels make more sense.
- Snow load on roof-mounted solar and wiring. Crestline sits at roughly 4,500 feet, and real winter snowfall is a fact of life. Panels and conduit need to be rated for snow load, and the wiring needs to survive freeze-thaw cycles year after year. Lower-elevation installers from the valley don’t always plan for this. We do, because we’re up here often enough to see what fails.
- PSPS shutoffs during fire season. SCE’s Public Safety Power Shutoff events hit Crestline hardest precisely during the August to October fire window. If your battery system was installed before 2022 and doesn’t have the right firmware or transfer switch configuration, it may not actually kick in when the grid goes down mid-shutoff. We test this on every service call because a backup battery that doesn’t back up is just an expensive brick.
Pricing for Solar Battery Storage & Backup in Crestline, CA
Here are honest numbers for Crestline, based on what we’ve actually installed in the 92325 zip code over the last three years. A single Tesla Powerwall 3 with installation runs $13,500 to $16,000. An Enphase IQ Battery 5P retrofit to existing solar lands between $9,000 and $12,000. A FranklinWH aPower for a larger home runs $14,000 to $18,000. A whole-home backup system with two Powerwall 3 units or equivalent runs $22,000 to $30,000. Main panel upgrades, if needed, add $3,000 to $5,000. These are installed prices, not equipment-only quotes, and they include permits, inspection, and our 90-Day Done Right Promise. Call (877) 550-6892 and we’ll give you a written number off your actual bill, not a brochure estimate. Take two weeks to think about it. The price will be the same.
We Also Serve Cities Near Crestline
Beyond Crestline, our crew regularly works in Lake Arrowhead, Muscoy, San Bernardino, and Highland. If you’re just up the road in Lake Arrowhead or down the hill in San Bernardino, the same Gus’s Solar team covers your battery install and service. We also handle Solar Panel Cleaning in Crestline for systems that collect pine needles and winter grime, and if you drive an electric vehicle up here, we can pair your battery with an EV Charger Installation in Crestline so you’re charging off stored solar instead of SCE’s peak rates.
Serving Crestline, CA - Our Local Coverage Area
We’re based in the Crestline 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 Crestline
Most Creedline battery service calls get a same-day or next-day visit, and our 24/7 line at (877) 550-6892 always reaches a live person, not an answering service. If your battery fails during a PSPS shutoff, call immediately, and we’ll prioritize you. Emergency diagnostics for Crestline customers run within 24 to 48 hours for non-critical issues, and the trip charge is waived inside our own county.
Yes. We service every part of Crestline in the 92325 zip code, from the Lake Gregory shoreline up to Top Town and the neighborhoods along Highway 138 and Lake Drive. Our trucks make the drive up the 18 several times a week, so we don’t batch Crestline calls with other counties or wait until a certain day of the week to come up the mountain.
Yes, and in Crestline specifically, the math is stronger than most of California because you’re in a High Fire Hazard Severity Zone with recurring PSPS shutoffs. The financial benefit of avoiding peak SCE rates under NEM 3.0 is real, but the bigger value is keeping your home powered during the August to October fire season when the grid goes down on purpose. We quote the year-25 output, not the day-one brochure number, so you’ll see exactly what the battery produces and saves over two decades.
Crestline runs about 5 to 8 percent higher than San Bernardino or Highland for the same battery system, mostly due to mountain access, fire-code compliance, and occasional snow-related scheduling delays. A single battery install that costs $13,000 in San Bernardino might run $14,000 in Crestline. We’ll show you the exact line items, and if you have a written estimate from another company, we’ll give you a free second opinion on it.
Yes. Our 90-Day Done Right Promise covers any installation issue in writing, and the battery hardware itself carries manufacturer warranties that apply in Crestline’s climate. If snow buildup causes a production issue or a tree branch damages wiring, we handle the repair. We don’t void warranties over mountain conditions, and we don’t blame the weather. If it’s not right, Gus makes it right. Call (877) 550-6892 for a free estimate.
Written by Gus Petrakis, Owner at Gus’s Solar, serving Crestline and the San Bernardino Mountains.






Before
After
Before
After
Before
After