Energy has always been defined as a scalar quantity since it measures magnitude but, of course has no direction. (E.g. temperature)
And as we know vectors have magnitude and direction. (E.g: Velocity)
However, there are 4 dimensions. Our three spacial dimensions and then the fourth: Time. Now as I understand it, everything in the universe is travelling through the fourth dimension at lightspeed. So while energy has no typical direction it has a forwards direction in time. So energy in one place, 3 seconds later, will have traveled forwards (4 dimensionally) by "3 seconds"
So isn't energy technically a vector?