5 cents kWh is somehow cheap, probably no large miner on planet earth has 1 cent / kWh rate, this was not even possible when the Chinese transported their miners next to the rivers for hydropower during the rainy season, there are a few places on earth with such power rate (including where I live), but none of those places have the capability of being a large mining hub, just small mining farms and here and there, all combined probably don't even makeup 1% of the total hashrate, what you need to worry about is the large players in U.S and now recently merging in Russia, staying at their rate is good enough, below is even better.