The type of energy used also matters. Tesla has suspended vehicle purchases using Bitcoin. Massive Bitcoin Mines Spring Up In Warehouses Bitcoin Mining Hardware What Is Bitcoin Mining Bitcoin Mining Almost all criticism of Bitcoins environmental impact real and imagined can be summed up by the following statement. How is bitcoin mining bad for the environment . Bitcoin is not a country it is a financial system and when you compare apples to apples cryptocurrency offers the most energy efficient financial system in the world. But such efforts are. We are concerned about rapidly increasing use of fossil fuels for Bitcoin mining and transactions especially coal which has the worst emissions of any fuel. Most bitcoin mining companies use alternative energy sources not just coal. The 411 on crypto mining. While that can mean some use of fossil fuels the best way for miners to maximize profits is to find places with excess supply. We are concerned about rapidly increasi