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Every Legend Evolves
More savings. More power. Greater energy resilience.
Powerwall 3 makes it easier to store energy and use it when it benefits you most. Pair it with new solar, modernize an existing solar system, or install it on its own to reduce peak-hour energy costs and gain reliable backup protection.
Whether you're starting fresh, already have solar, or simply want the benefits of battery storage, Powerwall 3 gives you more control over how and when your home uses energy. That can mean lower energy bills, reliable outage protection, and less exposure to future utility rate increases.
You don't need solar to benefit from battery storage. Charge Powerwall with lower-cost off-peak grid energy and use it during more expensive peak hours—while gaining backup protection during outages.
Build solar and storage together from the start to lower energy costs, store more of the clean energy you produce, and gain backup protection when the grid goes down.
Add Powerwall 3 to an existing solar system to store excess production, use more of your own energy during expensive peak hours, and add backup capabilities your original system may not have included.
Why Home Batteries Matter More Than Ever
Arizona's energy landscape is changing quickly. Rapid population growth and expanding data centers are adding new demand to the grid, while longer, hotter summers push electricity use even higher. At the same time, utility rates are rising, peak-hour energy remains expensive, and solar export credits continue to decline.
Powerwall 3 gives homeowners another way to respond. It can store lower-cost energy for expensive peak hours, help solar owners keep and use more of the energy they produce, and provide reliable backup power when the grid goes down.
That means your Powerwall isn't simply waiting for the next outage. It can work for you every day.
Save Up to 25% Upfront On Powerwall 3
Our Sun Valley Amicus Impact Prepaid Lease can reduce the upfront cost of qualifying Powerwall 3, solar + Powerwall, and battery-only projects by up to 25%—with no monthly lease payment.
Flexible purchase options begin in year six, giving you a path to ownership while Sun Valley Solar remains your local partner for system design, installation and long-term support.
Powerwall 3 Technology Advances Home Energy Storage—Making It Simpler and More Powerful
Powerwall 3 represents a major step forward from earlier home battery systems. Its integrated solar inverter can eliminate the need for separate equipment in many new solar installations, simplifying system design and helping reduce installation complexity and cost.
At the same time, Powerwall 3 delivers up to 11.5 kW of continuous power with 13.5 kWh of energy storage—giving homeowners more capability to power larger loads and support more of the home during an outage.
The result is a more streamlined system that's easier to integrate into a modern home energy strategy—whether you're installing new solar, adding storage to existing solar, or using Powerwall on its own.
13.5 kWh Energy Storage
Up to 11.5 kW Continuous Power
Integrated Solar Inverter Fewer components streamline installation
Powerwall 3 can be installed as a standalone battery system and charged from the grid during lower-cost off-peak hours. That stored energy can then be used to offset more expensive peak-hour energy use or provide backup power during an outage. Without solar panels, however, the battery has no means to recharge during an extended power outage, and you miss the additional savings that come from generating solar electricity during the day.
As utility buyback rates decline, sending excess solar energy back to the grid is becoming less valuable. Powerwall 3 lets you store more of the energy your solar system produces and use it later during expensive peak hours—instead of selling it back for less. It also provides backup power during an outage.
Older solar systems were often designed around utility rate plans that rewarded sending excess solar energy back to the grid. As grandfathered rate plans expire and utilities shift toward lower export credits and time-of-use pricing, storing more of your solar energy for use during expensive hours can become increasingly valuable. Adding Powerwall 3 can help modernize an existing solar system for today's energy landscape—without necessarily replacing the solar you already own.
It depends on how much electricity your home is using, which loads are backed up, how many Powerwalls you have, and whether solar is available to recharge them. We size each system around the homeowner's priorities rather than promising a one-size-fits-all backup duration.
That depends on your energy usage, goals, electrical loads, and whether you're using Powerwall primarily for savings, outage protection, or both. Some homes may be well served by one Powerwall 3, while others benefit from additional storage capacity.
Powerwall 3 is designed for indoor or outdoor installation, but Arizona's extreme heat and intense sun make installation location especially important. When possible, we generally recommend a protected location such as a garage.
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