If this is just for Bitcoin mining, then it will be much more if you add in all the altcoin mining. I guess thats why fees will keep increasing and this could justify the price increases as well.
As the article alludes to, this could be a problem because we will need to generate a lot more electricity for cryptocurrencies and to do all the other thinks we need it for such as Internet, lights, television, computers, air conditioning, refrigerators, etc.