Despite rising energy costs, miners are increasingly adopting renewables (e.g., hydropower, solar), with ~50% of Bitcoin mining powered sustainably in 2024. This trend reduces operational costs in regions like Iceland and Canada, where low-cost, green energy is abundant. However, global energy consumption for mining hit 68-100 TWh in 2023, straining grids and raising costs in fossil-fuel-heavy areas. Investment returns hinge on securing renewable energy contracts and efficient hardware. Miners diversifying into altcoins or staking may see better returns, but Bitcoin mining profitability remains volatile due to price fluctuations and halving cycles.