Full name: zettawatthour
Category type: energy
Scale factor: 3.6E+24
The SI derived unit for energy is the joule.
1 joule is equal to 2.7777777777778E-25 zettawatthour.
Valid units must be of the energy type.
You can use this form to select from known units:
The SI prefix "zetta" represents a factor of 1021, or in exponential notation, 1E21.
So 1 zettawatthour = 1021 .