The gigafactory produces 20GWh of batteries per year [0], or 0.002GWh/hour. So, its more like a megafactory by your system. I think it was just meant to mean "

The gigafactory produces 20GWh of batteries per year [0], or 0.002GWh/hour. So, its more like a megafactory by your system. I think it was just meant to mean "a factory which produces 1-999 GWh of batteries per year" - not per hour. [0] https://www.tesla.com/gigafactory https://www.tesla.com/gigafactory edit: this newer 2019 source suggests a 35GWh/year as a "theoretical output". Still orders of magnitude away from a GWh/h. https://electrek.co/2019/04/14/tesla-gigafactory-1-battery-cell-production-issues-elon-musk/ https://electrek.co/2019/04/14/tesla-gigafactory-1-battery-c...