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 Rohnert Park
Adding a battery to your solar system in Rohnert Park means you stop watching the evening rates climb while your panels sit idle. A Solar Battery Storage & Backup system built for your home stores what your roof generates during the day, then powers your house through SCP’s peak time-of-use window and keeps the lights on during outages. We know Rohnert Park’s neighborhoods section by section, and we’ll give you straight numbers and a plan that fits your actual panel setup, your actual electrical panel, and the way your particular street gets sun.
Call (877) 550-6892 for a free estimate. Gus’s own crew does the work, and a live person answers that number any time of day.
Why Gus’s Solar Is Rohnert Park’s Preferred Solar Battery Storage & Backup Company
We’re a local shop owned by Gus Petrakis, not a door-knocking operation with a call center somewhere else. Gus publishes his name, address, and license number, and he answers the phone himself. When a Rohnert Park homeowner calls with a question about a battery retrofit, they’re talking to the person who will stand behind the work. That matters in a city like this one, where a signed job in an older section tends to turn into three more jobs on the same block because neighbors actually talk to each other.
We’ve been serving Sonoma County homeowners since 2011, and Rohnert Park’s planned sections are familiar territory. We know the difference between a 1968 ranch on a low-slope hip roof and a 1980s two-story with a composition shingle ridge. Our team has handled battery retrofits, panel replacements, and whole-home backup projects across the 94926, 94927, and 94928 zip codes. When you call, you won’t get a script. You’ll get an honest answer about whether a battery makes sense for your usage, and if it does, what it’ll actually cost.
Response time to Rohnert Park is measured in days, not weeks. Our dispatch and scheduling are coordinated from the San Francisco Bay Area office, and crews work locally. Background-checked, uniformed technicians do every job. No subcontractors. Gus’s name is on the truck and on the invoice.
Our Solar Battery Storage & Backup Services in Rohnert Park
Tesla Powerwall Installation
Tesla Powerwall 3 units fit well with many Rohnert Park ranch homes, especially those with newer inverters and a simpler electrical layout. One Powerwall stores 13.5 kWh, which covers the evening TOU window for most average-size households. We handle the full install, including any load-center work, and we set discharge behavior based on your actual SCP rate schedule, not the default factory settings.

Enphase IQ Battery Installation
The Enphase IQ Battery 5P is a strong choice for homeowners with Enphase microinverters already on the roof. Rohnert Park’s marine-layer mornings mean your system’s production ramps up later in the day than an inland site, so we size the battery to capture peak afternoon output and stretch it through the evening. Installation typically takes one day for a single battery, assuming the panel has breaker space.

Whole-Home Backup Power
If you want your well pump, refrigerator, lights, and medical equipment running when the grid drops, we’d design a whole-home backup system around your actual load profile. For acreage properties with detached workshops, we’ll ask what’s on that subpanel. A battery that backs up the house but leaves the workshop dark misses the point. We’d plan for both.

Battery Retrofit for Existing Solar
This is one of the most common jobs we do in Rohnert Park. Many homes in Sections 5 through 7 have solar systems installed between 2010 and 2015. Those older string inverters don’t always support AC-coupling with a modern battery without a gateway or inverter upgrade. We’ll confirm compatibility before we quote anything, so you’re not signing a contract and discovering the hidden cost later.

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.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Rohnert Park
We work with the leading equipment manufacturers, including Tesla, Enphase, FranklinWH, and Panasonic. Because we’re local, we don’t have to wait on long lead times for parts when a Rohnert Park customer’s system has an issue. Our team carries common components and knows which equipment holds up best in Sonoma County’s marine-influenced climate. If you have a battery from another brand or a system that’s older than you’d like, call us anyway. We’ll diagnose it honestly and tell you if it’s worth fixing or replacing.
Common Solar Battery Storage & Backup Problems We See in Rohnert Park Homes
- No breaker space for a battery feed. Older ranch homes in Sections 3, 5, and 7 often have 100A main panels that are already full. We’d install a subpanel or relocate circuits. We do that work in one trip, so you’re not waiting on follow-up visits.
- Battery discharge settings left on factory defaults. If your battery isn’t programmed for SCP’s TOU rates and the marine-layer production delay, it’ll discharge too early. Then you’re still pulling from the grid during peak hours. We set backup profiles for Rohnert Park’s actual sun and rate patterns.
- Whole-house backup that skips the detached workshop or well pump. On acreage zones and larger lots, a backup system that powers the house but not the shop or well leaves critical systems dead in an outage. We’d map all your loads and size accordingly.
- Signing a battery contract without checking the old inverter. String inverters from the early 2010s are common in Sections 5 through 7. Some need a separate gateway for AC-coupling, and some need a full inverter swap. We’d confirm compatibility before you sign anything.
Pricing for Solar Battery Storage & Backup in Rohnert Park, CA
A single battery retrofit in Rohnert Park typically runs $12,000 to $18,000 installed, depending on brand and whether panel work is needed. A Tesla Powerwall 3 install generally lands between $14,000 and $19,000. Enphase IQ Battery 5P projects are usually $11,500 to $16,000. If you’re adding a backup gateway or relocating circuits in an older section home, add $1,500 to $3,500 for electrical work. Whole-home backup with two batteries and a subpanel can run $26,000 to $34,000.
The biggest cost variable in Rohnert Park is the age of your electrical panel. Homes built in the 1960s and 1970s in early sections often need subpanel work before a battery can tie in. We’ll give you that number up front. No signature needed tonight. Bring me a bill, I’ll bring you the math.
Call (877) 550-6892 for a free estimate on your specific setup. The price quoted is the price charged.
We Also Serve Cities Near Rohnert Park
Our crews serve all of Rohnert Park as well as nearby communities including Cotati, Roseland, Santa Rosa, and Petaluma. If you’re in one of those areas and want the same honest assessment we give in Rohnert Park, call us. We’ll come out, look at your system, and tell you what’s actually worth doing.
Serving Rohnert Park, CA - Our Local Coverage Area
We’re based in the Rohnert Park 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 Rohnert Park
Yes. You’ll need a new interconnection application filed with both PG&E and Sonoma Clean Power when you add a battery to an existing solar system. We handle the paperwork as part of the install, and we’ll confirm the status before we schedule the physical work. Call (877) 550-6892 and we’ll walk you through what’s involved for your specific system.
Yes, it can, but only if the battery and backup gateway are sized to include that subpanel’s loads. If the workshop has a separate feeder from the main panel, we’d include it in the backup load calculation. We see too many acreage properties where the house gets backup and the workshop well pump gets left out. We’d plan it correctly from the start. Call (877) 550-6892 for an assessment.
The marine layer delays solar production until mid-morning, which shifts charging later in the day. A battery that’s programmed for peak TOU rates but doesn’t account for that delay will discharge too early. We size your battery and set the discharge schedule for Rohnert Park’s actual sun pattern, so the payback reflects real production, not a brochure estimate. Call (877) 550-6892 and we’ll run your numbers off your actual utility bill.
Older ranch homes in Section 7 often have 100A main panels with no spare breaker positions, plus older string inverters that may not support AC-coupling without a gateway. Sometimes the roof itself needs work before panels can be moved or added. We’d identify all of that during the site visit and give you a one-trip plan with accurate pricing. Call (877) 550-6892 for a free estimate.
Yes. Even an older solar system can charge a battery during the day, and the battery can then carry your evening loads during SCP’s peak window. The key is matching the battery size to your actual daily generation, not just your consumption. We’d look at your bill, your inverter, and your panel output before recommending anything. Call (877) 550-6892 and bring your bill. We’ll bring the math.
Key Takeaways for Rohnert Park Homeowners
- Battery retrofits in Rohnert Park typically range from $12,000 to $34,000 depending on system size and panel work.
- The numbered sections mean houses on the same block often have nearly identical panels and roofs, so a retrofit plan can be built block-by-block.
- SCP’s time-of-use rates and the marine layer both affect battery settings. Default factory settings won’t match Rohnert Park’s actual conditions.
- Older string inverters and full 100A panels are the most common retrofit headaches in Sections 3, 5, and 7.
- Gus’s own crew does every install. No subcontractors, no call centers, no pressure to sign anything tonight.
If you live in Rohnert Park and you’re tired of watching your solar power go to waste while evening rates climb, call (877) 550-6892. We’ll give you an honest assessment, a fair price, and time to think it over. Take two weeks. The price will be the same.
Written by Gus Petrakis, Owner at Gus’s Solar, serving Rohnert Park and Sonoma County since 2011.






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