Which energy source is used for bitcoin mining?
In recent years, the demand for bitcoin has skyrocketed, along with the energy consumption associated with its mining process. As a financial professional, I'm curious to understand which energy source is predominantly utilized for bitcoin mining. Given the environmental impact and sustainability concerns surrounding cryptocurrency mining, it's important to be aware of the energy mix that drives this process. Is it primarily fossil fuels, renewable energy sources, or a mix of both? Additionally, how does the choice of energy source affect the cost-efficiency and scalability of bitcoin mining operations?