Bitcoin's energy consumption has become a focal point of debate as the network's annual energy use is projected to reach 173 terawatt-hours (TWh) by 2025, comparable to countries like Poland. However, the use of renewable energy in Bitcoin mining has increased from 37.6% in 2022 to 54% in 2025. The International Monetary Fund (IMF) has proposed a carbon tax on crypto miners, potentially generating $5 billion annually. The crypto industry faces the risk of losing institutional support focused on ESG standards if it fails to make substantial progress in energy sustainability.