A team of Flammable Ice miners on the South China sea
Mining Cryptocurrencies could be daunting if there was no power, or energy to process the sophisticated algorithms by supercomputers. That's why its expensive to mine Bitcoin and some other tokens, you could end up losing when the amount you spent on power is above what you earn from mining.
Renewable energy, Fossil fuels, Oils mined from inside the Earth-crust and under the ocean are power sources that could be used to do this sophisticated calculations, renewable energies like Solar energy, wind energy, Biogas are the cheaper alternatives to these problem.
WHAT DO YOU KNOW ABOUT FLAMMABLE ICE
China has successfully extracted "Methane Hydrate" also refered to as Flammable Ice from the trial mining sites in the South China Sea. This is a frozen mixture of water and concentrated natural gas, another energy source, a special type of fossil fuel which could substitute for Diesel and Petrol as well.
For volatility test, it can be lit on fire in it's frozen state, also a natural gas that could power houses and heavy mining equipments.