Home Battery Backup Installer, Bay Area | Tesla Powerwall 3 | Ally Electric & Solar
Bay Area solar & storage, in-house since 2010 (510) 559-7700
Home battery backup · Tesla Powerwall 3

Keep your lights on when the power goes out, with or without solar.

Tesla Powerwall 3, FranklinWH and Enphase batteries, installed by our own licensed Bay Area crew. Add one to the solar you already have, or install a battery on its own.

Call (510) 559-7700 BOOK MY FREE SITE VISIT
C10 & C46 licensed · CSLB #806465 · SGIP-approved developer · 1,000+ installs since 2010
Dual licensed C10 & C46
1,000+ Bay Area installs
In business since 2010
No subcontractors, ever
Certified installer Tesla Powerwall Enphase Energy FranklinWH EP Cube REC Group CSLB #806465
Battery options

Two ways to get battery backup

A Tesla Powerwall 3 or Enphase IQ Battery 10C starts at $15,000 installed. Your exact price depends on your home, so we confirm it after a free site visit. We check your electrical panel, what you want backed up, and which rebates or financing you qualify for.

No solar needed
Battery on its own
From $15,000*
  • Backup power for outages and PG&E shutoffs
  • Charges from the grid at cheaper off-peak hours
  • Tesla Powerwall 3 or Enphase IQ Battery 10C (FranklinWH also available)
  • Add solar later without replacing the battery
Book my free site visit
Most popular
Already have solar
Add a battery to your solar
From $15,000*
  • Store daytime solar and use it from 4 to 9 pm
  • Works with most existing NEM 1, NEM 2 and NEM 3 systems
  • Tesla Powerwall 3, FranklinWH or Enphase
  • Ask about SGIP rebates, GoGreen financing and HDM prepaid
Book my free site visit
Your price depends on your home. Electrical panel capacity, what you want backed up, any needed upgrades, permit requirements and utility rules all affect the final price. We confirm everything during a free site visit before you sign anything. SGIP rebates depend on eligibility and available funding; HDM prepaid financing is subject to approval and qualification.

*Starting price for one Tesla Powerwall 3 or Enphase IQ Battery 10C, installed, before rebates. The price goes up with a panel upgrade, a longer wire run, extra batteries or other site work.

Financing: Ally Electric & Solar is a participating contractor with GoGreen Home Energy Financing, a California program that helps homeowners get better loan terms for energy upgrades. Solar plus battery projects can be financed for up to 20 years and $75,000, at the lender's discretion. A battery on its own qualifies when your home already has solar. Approval, rates and terms are set by the participating lender, not by Ally. Learn more at GoGreenFinancing.com. Need financing? Tell us at your free site visit, or email nsaglam@allyelectricandsolar.com.
How it works

From first call to power on

1

Free site visit

We look at your electrical panel and where the battery would go, talk through what you want backed up, and give you a clear price.

2

Design & permits

We finalize the design, pull permits, and handle PG&E interconnection paperwork for you.

3

Install & power on

Our in-house crew installs, inspects, and commissions your system, then walks you through monitoring.

Why Ally

Neighbors you can hold accountable

Dual licensed, solar & electrical

CSLB C10 electrical and C46 solar under #806465. One contractor owns the whole job, with no gaps in accountability.

Our crews, not subcontractors

Every install is done by our own journeymen, so your workmanship warranty is backed directly by us.

Permits & PG&E handled

We manage plan sets, permitting, and interconnection so you don't have to chase paperwork.

Multi-brand certified

Certified for Tesla, Enphase, FranklinWH, EP Cube and REC Group, so we recommend what fits, not what we're locked into.

In our customers' words

What Bay Area homeowners say

★★★★★

"I recently had solar panels and a battery installed by Ally through PG&E's SGIP program. Nur was on top of the ever-changing requirements and paperwork, and Metin and the crew were great to work with through permitting and installation. So far it's working great and I love using almost all my own energy!"

T. M.
Verified Google review
★★★★★

"A rare find — a small family-owned business with honesty, integrity, and meticulous attention to detail. Their installers are their own employees, no outsourcing to third-party vendors. We contacted almost a dozen solar companies before selecting Ally. Our best contractor experience in 48 years of home ownership."

Stan Roth
Verified Google review
★★★★★

"Ally installed 17 solar panels on our roof. The installation team was very efficient and respectful of our home, and Metin and Nur were excellent communicators. We would not hesitate to recommend them to potential customers."

Jerrold Mitchell
Verified Google review
Questions, answered

Home battery FAQ

Can I get a home battery without solar?
Yes. A battery like the Tesla Powerwall 3 or FranklinWH aPower 2 can be installed on its own. It keeps essential circuits running during outages and can charge from the grid at cheaper off-peak hours. You can add solar later.
Can you add a battery to my existing solar system?
In most cases, yes. We add Tesla Powerwall 3, FranklinWH and Enphase batteries to existing solar, including older NEM 1 and NEM 2 systems. We check your inverter, panel and interconnection during the free site visit.
How long will a battery run my house during an outage?
It depends on what you back up. A Tesla Powerwall 3 stores 13.5 kWh, enough for essentials like the fridge, lights, Wi-Fi and some outlets for many hours, and longer when solar recharges it. Whole-home backup may need two batteries.
How much does a home battery cost in the Bay Area?
One Tesla Powerwall 3 or Enphase IQ Battery 10C starts at $15,000 installed, before rebates. The price goes up with a panel upgrade, extra batteries or other site work. We give you a clear, itemized price after a free site visit, including any SGIP rebate or GoGreen financing you qualify for.
Are there rebates for home batteries in California?
The SGIP program can pay part of a home battery for eligible customers, depending on funding. Ally is an SGIP-approved developer and files the paperwork for you. The 30% federal tax credit for homeowners ended for systems installed after December 31, 2025.
Do I need a new electrical panel for a battery?
Sometimes. Older or full panels may need an upgrade or a smart panel. Because we hold both C-10 electrical and C-46 solar licenses, we handle the panel work and the battery in one job.

Ready to take control of your energy costs?

Get a free, no-obligation remote assessment with real numbers for your home. Actual savings vary by system size, energy usage, and utility rates.

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Request your free assessment

For Berkeley, Oakland, Richmond and the wider Bay Area. Usually answered within 24 hours.

Ask about the HDM Prepaid PPA. Qualified homeowners can save 23–25% on solar & batteries depending on location, subject to approval. Mention it in your message below.

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