Gigawatt-hours to zeptowatt-hours equation
To convert gigawatt-hours to zeptowatt-hours:
Multiply the number of gigawatt-hours by 1.0000000000000002e+30
About gigawatt-hours
One gigawatt-hour is equal to a billion watt-hours
About zeptowatt-hours
One zeptowatt-hour is equal to a sextillionth watt-hours