Providing Roofing & Solar Energy Service Since 1995

Residential Battery Storage

Keep your lights on, appliances running, and family safe during outages. Professional home battery storage installation with $0 down financing.

Trusted since 1995 • Solar Energy Certified • Join 500+ Local Homeowners with Battery Backup

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Home - Residential Battery Storage

Why Battery Storage?

Benefits of Home Battery Storage

Discover why homeowners are adding battery storage to protect their homes and save money.

Backup Power During Outages

Keep your essential appliances running when the grid goes down. Refrigerators, lights, medical equipment, WiFi — all protected.

Peace of mind 24/7

Reduce Peak Hour Rates

Store cheap off-peak energy and use it during expensive peak hours. Cut your electricity costs by 20-40%.

Save $1,000-$2,500+/year

Maximize Solar Investment

Store excess solar energy during the day and use it at night. Get full value from every kilowatt your panels produce.

100% solar utilization

Energy Independence

Reduce dependence on the grid and volatile utility rates. Take control of your home’s energy future.

Grid independence

Seamless Automatic Backup

Battery kicks in instantly during outages — often before you even notice. No generators, no noise, no fuel.

Instant switchover

Zero Maintenance Required

Modern battery systems are completely maintenance-free. Install it and forget it for 10+ years.

Set and forget

Our Simple Process

How Battery Installation Works

From first call to backup power protection in as little as 1-4 weeks.

1
Home Assessment
We analyze your energy usage, electrical panel, and backup needs to design the perfect system.
2
Tailored Solution
Our engineers create a tailored battery solution with detailed pricing and financing options.
3
Professional Installation
Certified installers handle everything—permits, electrical work, and utility coordination.
4
Instant Protection
Your battery activates immediately. Monitor and control everything from your phone.

PREMIUM BATTERY SYSTEMS

Top-Tier Battery Brands We Install

We install only the best battery systems with proven reliability and performance.

Tesla Powerwall

Popular Choice

13.5 kWH unit

Ideal for: Complete home backup & solar storage

Enphase IQ Battery

Flexible & Reliable

3.4 – 10.1 kWH per unit

Ideal for: Flexible sizing & existing solar systems

Why Choose Simmitri

Trusted Battery Storage Experts

Certified Installers

Tesla Powerwall Certified, Enphase trained, and fully licensed.

10-Year Warranty

Full coverage on equipment and workmanship for peace of mind.

Full-Service Provider

We handle permits, installation, and utility coordination.

Fast Installation

Most battery installations completed in just one day.

29+ Years Experience

500+ battery installations across the Bay Area.

 
 

Lifetime Support

Dedicated support team for the life of your system.

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Our Promise to You

500+

Batteries Installed

5-Star

Customer Rating

Client Testimonials

What Our Customers Are Saying

Join thousands of happy homeowners saving with solar

Simmitri Inc. an award winning company.

Contact Us

Get Your Free Home Battery Quote

See exactly what a battery backup system costs for your home. No obligation, no pressure.

Custom System Sizing

Right-sized for your home and needs

Backup Time Calculator

See how long your battery will last

Financing Options Review

$0 down options available

Call Us Today!

Monday – Friday: 9am – 5pm Pacific | Free consulation

See why Marion and Paul recommend Simmitri
*Real Client Experience Video Testimonial*

Frequently Asked Questions

Home Battery Storage FAQs

Everything you need to know about battery backup for your home.

It depends on your battery capacity and what you power. A single Tesla Powerwall (13.5 kWh) can power essential loads (refrigerator, lights, WiFi, phone charging) for 24-48 hours. For whole-home backup, multiple batteries may be needed. We'll calculate your specific backup time during the free assessment.

No, you can install a battery without solar. The battery will charge from the grid during cheap off-peak hours and discharge during expensive peak hours, saving you money. However, pairing solar with battery maximizes savings and provides true energy independence.

A complete battery installation typically costs $10,000-$20,000 depending on the system size and brand. Tesla Powerwall is around $11,500-$15,000 installed. With $0 down financing, monthly payments can be as low as $100-$150. We provide detailed pricing in your free assessment.

Most premium batteries come with 10-year warranties. Tesla Powerwall is warranted for 10 years with unlimited cycles. Enphase offers a 10-year or 15-year warranty option. We also provide our own workmanship warranty on installation.

Most battery installations are completed in a single day (4-8 hours). The full process from signing to activation takes 2-4 weeks, primarily due to permit processing. We handle all permits and utility coordination.

Yes! When the grid goes down, your battery automatically switches to backup mode within milliseconds - often before you even notice. When power returns, it seamlessly reconnects and resumes normal operation.

Yes, most battery systems are designed to be scalable. You can start with one battery and add more later as your needs change. We design your initial installation with future expansion in mind.

Modern home batteries are virtually maintenance-free. There are no moving parts, no fuel to add, and no regular service needed. The system monitors itself 24/7, and you can check status anytime via the smartphone app.

Still have questions? We’re happy to help!

Putting The Sun’s Power At Your Fingertips

We’re committed to your success. This is why we built and continue to improve our mobile app. With it, you harness and control your new clean energy system from…just about anywhere! Throughout your project, it will act as a command center keeping you updated and informed in real-time every step of the way, as well as housing all your documents and media files.

Once your project is complete and your system is running, you’ll be able to monitor your usage, track production levels, maximize efficiency, review annual reports, and much more! The Simmitri app is convenient and powerful, making your energy management experience second to none, both during your installation and well beyond for the lifetime of your system.

Simmitri Mobile App
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