According to 
Bitcoin mining uses as much power as Croatia !
(in his Steemit post located at https://steemit.com/steemit/@oudekaas/the-ultimate-benchmark-bitshares-versus-bitcoin-who-will-survive-the-test-of-time)
That is shocking.
Meanwhile, Bitshares, which provides much faster and infinitely cheaper transaction rates and fees, uses no power in its Delegated Proof of Stake (DPoS) model.
Which you gonna buy? Bitcoin and build a Noah's Ark - or Bitshares so Polar Bears can still ski in December :-)
Image from