I got this chart on a mailer from my utility company recently.
The proportions misrepresent the contributions of coal and natural gas, although the numbers are accurate (they're copied from another table in the flyer). Coal should be nearly twice the size of natural gas on this chart, but the two are nearly equal. Oops.
it apears that the sizes of the pieces are lost in faux-3-d prespective
Yes. Also, the proportions are completely broken.