Power your home. Even when the grid goes down.

Powerwall 3 is Tesla's home battery — a wall-mounted unit that stores electricity so your home can use it later. It stores 13.5 kWh of energy and includes a solar inverter built in, so a single unit can both convert solar energy and store it. It can be installed with new solar, added to an existing system, or installed on its own for backup power.

13.5 kWh per unit, with up to 11.5 kW of continuous power output. As a rough guide, that's enough to cover the essentials of a typical home overnight — how long it lasts depends on what you're running. Homes with higher demand can install multiple units.

Often, yes. A single Powerwall 3 delivers 11.5 kW of continuous power and can start motor loads rated up to 185 LRA, which covers the air conditioning in most homes. Whether one unit covers everything you want backed up depends on your home's size and usage — larger or all-electric homes may need two or more. Volt Home sizes this during your consultation.

Powerwall detects the outage and switches your home over to stored energy automatically — there's nothing to start or switch by hand. When the grid comes back, it switches back on its own. Paired with solar, Powerwall recharges during the day, so it can keep going through multi-day outages.

Yes — and it's designed for it. Powerwall 3 accepts up to 20 kW of solar input with the inverter integrated into the unit, which simplifies the system. Energy your panels produce and your home doesn't use charges the battery instead of being exported, so you can use it after sunset.

It depends on how much energy you use, which circuits you want backed up, and how long you want to run without the grid. Many homes start with one; systems can scale to four Powerwall 3 units per home. We'll look at your utility bill and your priorities and recommend a size — no guesswork.

It's mounted to an exterior or garage wall by a certified crew and wired into your electrical service, typically with a Tesla Backup Switch or Gateway so the home can island itself during an outage. Volt Home handles the design, permitting, installation, utility interconnection and commissioning.

The on-site work is usually completed in one day for a straightforward battery installation, or one to two days when it's paired with a new solar system. The overall timeline depends on permitting and utility approval in your city, and your project coordinator keeps you updated at each step.

Yes. We work with several financing partners and offer flexible options, including $0-down plans with approved credit. Your specialist will walk through what's available for your home and market, including any state or utility programs you may qualify for.

Powerwall 3 carries a 10-year Tesla product warranty. Volt Home's workmanship coverage applies to the installation itself, and you can reach our team directly for service — you're not left between manufacturer and installer.