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Fast, Reliable Solar Battery Storage & Backup Across Loomis
Solar battery storage in Loomis runs between $9,500 and $18,500 for a standard retrofit after the 30% federal tax credit, depending on whether you need one battery or a whole-home stack. Most Loomis homes we quote get a Tesla Powerwall 3 or Enphase IQ Battery 10T installed within 3 to 4 weeks of signing. If you are on a private well or running a detached shop, the math changes fast, because keeping those 240V loads alive during a PG&E outage takes a properly sized system, not a cookie-cutter add-on. Call us at (877) 550-6892 and we’ll build the quote off your actual bill, your actual panel output, and your actual well pump draw, not a brochure.
Why Gus’s Solar Is Loomis’s Preferred Solar Battery Storage & Backup Company
We have been climbing on Loomis roofs and crawling through Loomis electrical panels long enough to know what this town actually needs. The acreage lots off King Road, the ranchettes up around Loomis Basin, the custom builds along Horseshoe Bar Road and Val Verde Road, those homes are not like the tract housing 15 minutes west. They have bigger loads, older panels, and well pumps that pull 240V every single day. Our Solar Battery Storage & Backup team sizes for that reality, not for a suburban bill from Roseville.
Gus Petrakis founded this company in 2011 and still answers his own phone. That is not a marketing line. When a Loomis customer calls at 8:40 on a Saturday night because their battery tripped during an outage and the well is dead, the person who picks up is the same person whose name is on the estimate. The same crew that installed your system is the crew that comes back. Background-checked, uniformed, and local. We do not hand Loomis work off to a sub crew from out of county.
Our response time to Loomis for emergency service is typically same day or next morning. We quote the year-25 output, not the day-one brochure number. Bring us a bill, we’ll bring you the math. That is the whole deal.
Our Solar Battery Storage & Backup Services in Loomis
We install and service battery systems across the 95650 zip code, from the Loomis Basin corridor up to the Penryn side and out toward the Sierra foothill edge. Here is what that looks like in practice for Loomis homes.
Tesla Powerwall Installation
A single Tesla Powerwall 3 in Loomis with installation typically runs $13,000 to $16,000 before incentives. Two Powerwalls will push you toward $23,000 to $27,000. For most Loomis ranchettes with a well pump and a shop, we recommend two if you want the whole property backed up, not just the house panel. The Powerwall 3’s integrated inverter handles 240V surge well, but a 5 hp irrigation pump will still test it. We design around that.

Enphase IQ Battery Installation
The Enphase IQ Battery 10T lands around $10,500 to $13,500 installed in Loomis. It pairs cleanly with existing Enphase microinverter arrays, which are common on Loomis roofs from the mid-2000s onward. If your existing system is SolarEdge or another string setup, we can still retrofit, but the wiring is more involved and the quote will reflect that. No surprises, just the number up front.

Whole-Home Backup Power
Whole-home backup means everything stays alive: the house panel, the well pump, the detached shop, the irrigation controller, the freezer in the barn. In Loomis, that almost always means a critical-loads panel or a smart panel upgrade, because the acreage electrical layout in this town rarely resembles a suburban single panel setup. We map every load before we quote. If you want the shop compressor and the well both covered, we build for that from day one, not after the first outage exposes the gap.

Battery Retrofit for Existing Solar
Most Loomis homes built between 1985 and 2010 that already have solar are sitting on NEM 2.0 agreements. You can absolutely add a battery without losing that status, but the interconnection paperwork has to be filed correctly with PG&E and your existing inverter needs a compatibility check. We handle the entire retrofit, including the utility application, so you do not end up with an export-capable battery that threatens your true-up credits. A typical battery retrofit in Loomis runs $11,000 to $17,000 before incentives, depending on inverter compatibility and whether your existing panel needs work.

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 Loomis
We install and service Tesla, Enphase, SolarEdge, Panasonic, and FranklinWH battery systems across Loomis. If you already have a FranklinWH aGate or an older Enphase battery that is throwing codes, we carry or can source parts fast from our Sacramento office and we service what we sell and what we did not sell. No brand loyalty games. If it is on your wall and it is a quality system, we will keep it running. Loomis customers get straight answers about which battery makes sense for their panel, their well, and their roof, not whichever brand is paying the highest spiff this quarter.
Common Solar Battery Storage & Backup Problems We See in Loomis Homes
- Well pump not backed up. The most common miss on Loomis ranchettes: the installer only backed up the house panel, so the 240V well pump dies the second PG&E cuts power. No water, no toilets, no pressure tank. We always ask about your well first. If a battery quote does not mention your well, the person quoting it does not understand Loomis.
- Undersized inverters tripping on startup surge. A 5 hp irrigation pump or a 7.5 hp shop compressor pulls a startup inrush that a suburban-spec inverter cannot handle. The battery sees the surge, trips, and your whole acreage system goes dark. We size for inrush current, not just continuous load, on every Loomis install.
- NEM 2.0 retrofits without updated interconnection filings. Adding a battery to an existing NEM 2.0 system without updating the PG&E interconnection agreement is a real problem we see on Loomis homes. The battery becomes export-capable, PG&E flags it, and you can lose true-up credits or face compliance demands. We file the paperwork correctly before the battery ever gets mounted.
- Batteries in full sun or unventilated spaces. Loomis summers regularly top 100°F. A battery mounted on a west-facing exterior wall in direct afternoon sun will derate its output and shorten its lifespan. We spec shaded or garage placements whenever the layout allows, and we tell you why at the quote stage, not after the thermal faults start.
Pricing for Solar Battery Storage & Backup in Loomis, CA
Here is what we are actually quoting Loomis homeowners right now, after the 30% federal clean energy credit:
- Single battery retrofit (Enphase IQ 10T or Tesla Powerwall 3): $9,500-$13,000 after credit
- Single battery with critical-loads panel: $12,000-$15,500 after credit
- Two-battery whole-home backup with well pump and shop loads: $17,000-$22,000 after credit
- Battery expansion or replacement (existing battery system): $4,000-$9,000 after credit, depending on stack size
What moves the number in Loomis: the age and condition of your main panel, whether your well pump needs a soft-start module, the distance from your meter to your shop or barn, and whether your existing inverter is compatible. We give you one price, in writing, and we do not push for a signature tonight. Take two weeks. Think about it. The price will be the same. Call (877) 550-6892 for a free estimate.
We Also Serve Cities Near Loomis
Gus’s Solar works throughout Placer County. If you are in Rocklin, Granite Bay, Roseville, or North Auburn, you get the same owner-operated crew and the same 90-Day Done Right Promise. This page is specific to Loomis, because the wells, the acreage, and the sun up here are different from the valley floor, but our service area covers the full foothill corridor.
Serving Loomis, CA - Our Local Coverage Area
We’re based in the Loomis 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 Loomis
Yes, but only if the battery is sized and wired for it from the start. A single Enphase IQ Battery 10T can run a standard 1.5 hp well pump, while a 2 hp or larger pump typically needs a Tesla Powerwall 3 or two Enphase units, plus a soft-start module in many cases. We have seen too many Loomis homes where the original solar installer only backed up the house panel, leaving the well dead during an outage. If a battery quote does not ask about your well pump, get another quote. Call (877) 550-6892 and we will check your pump draw as part of the free estimate.
Loomis sits at 400 to 600 feet of elevation, which mostly lifts it out of the tule fog that blankets Rocklin and Roseville through the winter months. That means 15 to 25 more production days per winter when your array actually refills the battery instead of sitting under fog. In real terms, a battery in Loomis cycles more fully year-round than one 15 minutes downhill, which improves your time-of-use arbitrage and your backup readiness. It is a genuine kWh advantage, not a sales talking point.
Yes, adding battery storage to a NEM 2.0 system in Loomis does not automatically move you to NEM 3.0, but the PG&E interconnection agreement must be updated to reflect the new equipment. If the battery is not properly listed and the filing is skipped, PG&E can flag the system and you could lose true-up credits. We handle the filing as part of every Loomis battery retrofit, and we verify your existing inverter is compatible before we quote. Call (877) 550-6892 for a free second opinion on any written estimate you already have.
For most Loomis homes on PG&E’s current residential time-of-use rates, Self-Consumption mode with a reserve percentage for outages is the strongest setting, because your well pump runs all day regardless of rate period and your battery should cover that base load during peak evening hours. If you are on an electric vehicle rate or have heavy daytime shop use, we may recommend a Time-of-Use mode with specific peak windows. We set the reserve to cover at least 24 hours of well pump duty, which for a standard Loomis ranchette is around 15 to 20 percent of a single battery’s capacity.
Yes, Loomis homeowners can install batteries in a detached shop, garage, or dedicated outbuilding, and with the acreage lots common around Loomis Basin and King Road, many jobs do exactly that. The battery needs a shaded, ventilated wall or interior space that stays under the manufacturer’s temperature limits, which Loomis summers make especially important. The main consideration is the conduit run back to your main panel and the transfer switch location, which can add $800 to $2,500 depending on distance. We quote that accurately before work begins. Call (877) 550-6892 for an exact number on your specific property.
Written by Gus Petrakis, Owner at Gus’s Solar, serving Loomis and Placer County since 2011.






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