Powerwall 3 System Overview
Powerwall 3 is a fully integrated solar and battery system. The home's PV array is connected directly to Powerwall 3, which converts solar energy and stores it for future use. Powerwall 3 is installed with Backup Switch to control the system's connection to the grid and monitor home energy consumption.
The following table outlines the key Tesla components in a standard Powerwall 3 system.
Tesla Components
| Tesla Part Numbers | Component | Description |
|---|---|---|
|
1707000-xx-y |
Powerwall 3 mounted in front of Expansion unit |
Powerwall 3 is an integrated solar and battery system that converts energy from solar panels or Solar Roof to be used by the home, and stores excess energy for future use. Every system contains at least one Powerwall 3, with additional Powerwalls and/or Expansion units installed depending on the home’s solar system size and/or energy consumption. |
| 1807000-xx-y | Powerwall 3 Expansion is a battery that provides additional storage for a Powerwall 3 system. Because the Expansion does not include an inverter, it cannot be installed without Powerwall 3. Solar cannot be connected to an Expansion unit. | |
| MCI-1 |
|
The Tesla Mid-Circuit Interrupter (MCI) is a
device installed in the PV array to stop solar production when:
|
| MCI-2 |
|
|
|
1624171-xx-y |
|
Backup Switch monitors energy usage and manages the transition to and from backup operation. |