It overly interesting to see that Elon, the boss of Tesla was trending this "bitcoin is bad for environment" part,
how about his doge love
for 3.25kw you can get 110,000,000mhash for bitcoin
for 3.45kw you will get 9,500mhash for doge
(yes they use different algo's. but bitcoin is proven more secure)
doge mining is 11579x less efficient
there are only ~30k doge asics but uses 0.88TWH/y (if based on the L7 asic)for 0.000,279exahash(279terrahash)
right now bitcoin has 1.7m asics but uses 47THW/y.. for 190exahash
if doge also used 1.7m asics it would use 51TWH/y.. for 16peta (0.016exahash)
doge only appears to use less electric. not due to tech, algo or technique. but simply that there are 58x less people mining it
also doge miners are usually home hobbiests(not choosing to set up in renewable regions) thus energy mix is more random towards the 20% renewable