Tesla Powerwall 3 & Powerwall 3P Home Batteries

Tesla Powerwall 3 or Powerwall 3P: Which is right for you?

Tesla Powerwall 3 combines a home battery with an integrated solar inverter. It stores electricity from your solar panels or, where configured, the grid, so you can use that energy later.

It is designed for homes with a single-phase electrical connection and can be incorporated into a new solar installation or added to an existing solar system, subject to system design.

Tesla Powerwall 3P: Designed for three-phase homes

Have a three-phase electricity supply? Tesla Powerwall 3P is designed specifically for three-phase homes.

It combines battery storage and an integrated solar inverter, with the ability to support three-phase backup loads when the system is appropriately designed and installed.

This can be particularly relevant for homes with three-phase appliances, heat pumps, pool equipment or other substantial electrical loads.

Powerwall 3P is also designed to work with new and existing solar installations. The right configuration depends on your electrical supply, solar system, household consumption and backup requirements.

Powerwall can power your entire home with one unit, making whole-home backup protection more affordable. Each unit is self-contained with an integrated solar inverter for added efficiency, resulting in fewer parts and faster installation. This helps make multi-unit systems more affordable and system expansions easier in the future.

How does Tesla Powerwall work?

Store surplus solar energy
When your solar panels generate more electricity than your home is using, the excess can charge your Powerwall rather than being exported to the grid, subject to system configuration.

Use your stored electricity
Your stored energy can be used in the evening, overnight or when solar generation is low. This can reduce the amount of electricity you need to buy from your retailer.

Manage your electricity costs
Depending on your electricity plan and system settings, Powerwall can help you make better use of lower-cost electricity periods and stored solar energy. Actual savings depend on your energy consumption, tariffs, solar generation and system design.

Keep your home powered during outages
When the grid goes down, a correctly configured Powerwall system can provide backup electricity. The available power and which circuits or appliances can operate depend on the Powerwall model, installation and household loads.

Add Tesla Powerwall to your existing solar system
Already have solar panels? You may not need to start again. Tesla Powerwall 3 and Powerwall 3P can be incorporated into suitable existing solar installations, including systems using other inverter brands. The installation design determines how the battery integrates with your existing equipment and how backup will operate.

StarDelta can assess your current system and explain the available options before recommending an upgrade.

Expand your energy storage as your needs change
Tesla Powerwall 3 and Powerwall 3P support compatible Powerwall Expansion units, allowing additional energy storage capacity to be added where appropriate.

This can be useful if your household electricity use increases, you add an electric vehicle or you want longer backup duration. The correct configuration and compatibility should be confirmed during system design.

Save and earn

Using your usage history, weather forecasts and electricity price estimates, Powerwall optimises your stored energy to power your home more efficiently, day and night. With some electricity providers, you can earn money by sharing your energy to the grid.

Frequently asked questions about Tesla Powerwall

What is the difference between Tesla Powerwall 3 and Powerwall 3P?
Powerwall 3 is designed for homes with a single-phase electrical connection, while Powerwall 3P is designed for three-phase homes and can support suitable three-phase backup loads. Your electrical supply and backup requirements help determine which model is appropriate.

Can Tesla Powerwall 3P provide backup to my whole house?
It can be designed for whole-home backup in suitable installations. However, this is not guaranteed for every property. The system must be sized and configured for your electrical loads, and some appliances may need load management.

Can I add Powerwall to my existing solar panels?
Yes, Powerwall 3 and Powerwall 3P can be integrated with suitable existing solar installations. Your installer will assess your current inverter, solar array, switchboard and backup requirements.

Can Powerwall charge from the grid?
Yes, grid charging can be available depending on the installation, system settings and applicable electricity arrangements.

How long will Powerwall power my home during an outage?
Backup duration depends on the usable stored energy, your household’s power consumption, the loads being backed up and whether solar generation is available to recharge the battery.

Can StarDelta install Tesla Powerwall at my property?
Contact StarDelta to discuss your location, electrical supply and solar requirements. We can assess your property and advise on a suitable system and installation options.

Ready to explore Tesla Powerwall?
Whether you’re planning solar from scratch, upgrading an existing system or looking for greater resilience during power outages, StarDelta can help you explore your options.