Battery Storage

Solar Battery Storage in the Bay Area • Certified Tesla Powerwall Installer & More!

Solar Battery Storage

Sun First Solar is proud to offer new technology battery storage options that improve onsite solar efficiency. Our battery storage options include names on the cutting-edge of battery storage technology, such as Sonnen Eco and the Tesla Powerwall.

When you install a solar battery as part of your home solar energy system, you can actually store the extra energy your solar panels produce back into the electricity grid. During the times when you need more electricity than your system normally produces, you can use the solar energy you have stored through your solar panel battery storage.

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Solar Battery Bank
for Home

Sun First Solar can install a home battery storage system that will help you experience all of the benefits of solar power. When you install a solar battery bank as part of your home solar energy system, you can actually store the extra energy your solar panels produce at home instead of feeding it back into the electricity grid. With a home solar battery bank, you maximize your ability to use the electricity generated by your solar panels on a day-to-day basis. During the times when you need more electricity than your solar panels are producing (later in the day or at nighttime), you can use the solar energy you have stored. Contact us today so we can provide you with the latest information on your battery storage options. Our solar energy storage systems are second to none.

Certified Tesla Installer & More!

We are proud to be experts in the installation of battery back-up systems, and we are a certified Tesla Powerwall installer. In fact, we installed our first Off-Grid PV and Battery system back in 2004, and we have been installing them ever since. Battery storage is the present and future of solar energy technology. Contact us today to learn more about how we can install a battery storage system in your home today for maximum energy independence.

TESLA POWERWALL 3

Sun First Solar is a Tesla Powerwall Certified Installer, which means we now offer a customized solar-plus-battery solution that enables you to access the free, abundant power of the sun and reduces your reliance on fossil fuels. With Tesla Powerwall you can store solar energy generated during the day for use any time. During the day, the sun shines on your solar panels, charging your battery.

At night, your home draws electricity from your Tesla powerwall battery, powering your home with clean, sustainable energy 24/7.

Installing Powerwall with Sun First Solar is easy. We take care of everything from design, permitting, installation, financing, interconnection and strong customer service.
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The Tesla Powerwall 3 is a powerful, efficient home energy solution with whole-home backup, thanks to its high power output and integrated inverter. Its Lithium Iron Phosphate (LFP) battery offers greater safety, lifespan, and efficiency. Scalable from 13.5 to 67.5 kWh, it’s ideal for expanding energy needs. Tesla’s smart system optimizes usage, cuts grid reliance, and boosts savings—making Powerwall 3 a durable, sustainable choice for energy independence.

Tesla Powerwall 3 brochure

Tesla Powerwall can provide a number of benefits including:

Self-Powered – Tesla powerwall increases the self-consumption of solar power generation. Powerwall can store surplus solar energy during daylight hours and use that energy later when the sun is not shining.

Time-Based Control – Powerwall can charge during low rate periods when demand for electricity is lower and discharge during more expensive rate periods when electricity demand is higher.

Back-up power – Assures power in the event of a grid outage.

Enphase IQ Battery brochure

Enphase IQ Battery

Store solar power to use anytime—at night or during peak hours to reduce energy bills or when there’s an outage and utility power is unavailable. Enphase batteries are modular and come in two sizes and two capacities to perfectly suit your energy needs today and in the future.

Designed for
maximum safety.

By using lithium iron phosphate battery chemistry, Enphase puts safety first where it matters most— your home. Enphase IQ battery operates at low-voltage DC power, avoiding the dangers that come with high-voltage DC power.

Smart backup with
or without the grid.

In the event of a grid outage, our Power StartTM technology can intelligently provide enough surge power to smoothly start powerhungry appliances.

Perfect size,
perfect fit.

IQ Batteries come in two capacities to provide the most flexibility when designing your storage needs—and each are available in two sizes to fit any space.