$0.02/kWh is extremely cheap. And if they really can achieve 5.5EH/s by 2nd quarter, they'll have about 1.5% of total Bitcoin hashrate. But i hope they'll be careful about expanding their business quickly since in past year many similar company went bankrupt.
If Nuclear Energy is cheap, why aren't we seeing widespread use of it as compared to fossil fuel?
Probably because high initial cost and push back from some environmentalist and people who afraid Chernobyl disaster will happen again.