To select site import or export permissions, and/or to set site import or site export
limits, select Settings > Import & Export Limits.
Site Import Permissions and
Limit
Site Import Permissions
determine whether Powerwall is allowed to charge from the grid. The default setting
is to allow grid charging, except in instances where the customer does not own their
system or the utility is restrictive.
Note
This setting is separate from the
Grid Charging setting in
the customer mobile app, which may overrule the installer setting for ITC
reasons.
The Site Import Limit
determines the amount of power (in Watts) that can be imported at the site meter.
The default is a very high value, but a limit can be set to prevent breaker
tripping. For example:
A home has six Powerwalls
which charge from the grid at 5 kW each, for a total of 30 kW (125 A)
The home has a 100 A (24 kW)
main breaker
The installer sets the Site
Import Limit to 20,000 W (83 A) to prevent the main breaker from
tripping
Site Export Permission and
Limit
Site Export Permissions
determine what is allowed to export to the grid (the options are Default (Solar Only), Permanent Non Export, and
Solar and Battery).
The Site Export Limit determines the amount of power (in Watts) that can be
exported to the grid. This setting is used to protect breakers, or where the utility
imposes a limit.
