The error file says:
** Severe ** Invalid Electrical Storage Object Name
=
** ~~~ ** Entered in
ElectricLoadCenter:Distribution = ELECTRIC LOAD
** Severe ** Electrical storage object was not
found
** Fatal ** Errors found processing input for
electric load center.
It would appear you need an Electrical Storage Object Name:
A8; \field Electrical Storage Object Name
\type object-list
\object-list
ElecStorageList