[kevin_b_er]

The article is estimating the cost at 2150 KWh per transaction vs the total bitcoin estimated power usage.

So this is trying to average out the total electrical cost including mining into a per-transaction cost.

[drexlspivey]

If they increase the arbitrary block size by x100 this number will become 21.5 KWh and nothing will change but at least these annoying articles will go away.

[cypress66]

That already exists and is called bitcoin cash