Powerwall 2 AC is a fully integrated AC battery system for residential or light commercial use. Its rechargeable lithium-ion battery pack provides energy storage for solar self-consumption, load shifting, or off-grid use. The Tesla Energy Gateway controls the operation of the system and allows remote monitoring of energy usage.

For Powerwall systems with solar, excess solar energy can be stored and used at night. For systems without solar, Powerwall can charge from the grid during the day when electricity costs are low, and discharge at night when electricity costs are high.

Partial Home Backup System

A Powerwall system for partial home backup is designed to store energy from the grid or solar, and can power some home loads during a grid outage. These loads are selected during the system design phase, and the installer configures the system at installation to exclude all other loads from backup.

Whole Home Backup System

A Powerwall system for whole home backup is designed to store energy from the grid or solar, and power the entire home during a grid outage.

Non-Backup System

A non-backup Powerwall system is designed to store energy from the grid or solar, but does not operate during a grid outage.

System Components

Powerwall

Component	Description	Tesla Part Numbers
	Powerwall 2 AC is the rechargeable battery that stores energy for your home. Every system contains at least one Powerwall, with additional Powerwalls installed, depending on your home’s energy consumption. Powerwall is installed with one of the following Tesla Gateways.	1092170-xx-y 2012170-xx-y 3012170-xx-y

Tesla Energy Gateway

Component	Description	Tesla Part Numbers
	The Tesla Non-Backup Gateway is installed in non-backup systems. The Non-Backup Gateway controls the operation of the system and allows remote monitoring of energy usage.	1099752-xx-y
	The Tesla Backup Gateway 1 is installed in partial and whole home backup systems. The Backup Gateway 1 is a legacy product. It controls the operation of the system, allows remote monitoring of energy usage, and manages the transition to and from backup operation.	1118431-xx-y
	The Tesla Backup Gateway 2 is installed in partial and whole home backup systems. The Backup Gateway 2 controls the operation of the system, allows remote monitoring of energy usage, and manages the transition to and from backup operation.	1152100-xx-y

Powerwall Overview

Powerwall includes the following components and features:

Component/Feature	Name
1	Air Intake
2	Air Exhaust
3	Wiring Compartment
4	On/Off Switch
5	LED Indicator