Metering Considerations

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Note
Powerwall 3 is not compatible with Neurio remote energy meters. Tesla Remote Energy Meter must be used if a remote meter is required.

Site Metering

Backup Gateway 2, Gateway 3, and Backup Switch have internal meters (Internal Primary Meter X in Backup Gateway 2 and Meter Z for Backup Switch / Gateway 3) for monitoring Site. For partial home backup systems, the following options are available for metering non-backup loads:
  • Backup Gateway 2 Non-Backup Lugs: Non-backup loads must be <100A and system must include Backup Gateway 2
  • Tesla 100A CTs connected to Backup Gateway 2: Non-backup loads must be <100 A and within 330 ft (100 m) of Backup Gateway 2
  • Tesla 200A CTs connected to Tesla Remote Energy Meter: Non-backup loads must be <200A

Solar Metering

  • Powerwall 3 Solar: Powerwall 3 performs its own solar metering. No additional Solar metering needs to be installed or configured for Powerwall 3.
    • Powerwall 3 can also be used without any solar on the site.
  • AC-coupled Solar (Tesla Solar Inverter or third party): All AC-coupled solar must be monitored using one of the following options:
    • Tesla 100A CTs connected to Backup Gateway 2: Solar must be <100 A and within 330 ft (100 m) of Backup Gateway 2
    • Tesla 200A CTs connected to Tesla Remote Energy Meter: Solar must be <200A
    Warning IconA warning icon, calling your attention to a possibly risky situation
    CAUTION
    If AC-coupled solar is not metered correctly, Powerwall will not frequency shift to control solar during a grid outage, resulting in a serious risk of damage to the customer's home loads and/or Powerwall.