The bitcoin mining process uses computers with software that can solve complex mathematical problems. A new block is added to the blockchain every time a new problem is solved, rewarding the miner with bitcoins. This process requires a lot of energy because the computers need to ledger all the transactions so that the same coins aren’t spent twice – this takes time and consumes a lot of electricity. If the price of bitcoin continues to go down, and the amount of energy needed to mine it continues to rise, bitcoin investment could become inefficient. One of the ways this can be avoided is if the world shifts to 100% renewable energy in the years ahead. With renewables, the environmental and efficiency concerns around bitcoin energy usage would be negated.