You decided all on your own that GWh of storage cannot be divided by a time unit to create another 'new' unit, GW of storage. Repeat: _You_ decided that. I can

You decided all on your own that GWh of storage cannot be divided by a time unit to create another 'new' unit, GW of storage. Repeat: _You_ decided that. I can explain it simply: One GW of storage is equivalent to producing one gigajoule of storage per second.