Cryptocurrency can play a positive role in global carbon neutrality goals. Blockchain technology enables transparent carbon credit trading, ensuring accountability and reducing fraud. Decentralized platforms can incentivize renewable energy adoption by rewarding eco-friendly practices with tokens. For instance, projects like SolarCoin reward solar energy producers, promoting clean energy. However, challenges remain—Bitcoin’s energy-intensive mining consumes significant electricity, often from fossil fuels. Innovations like Ethereum’s shift to proof-of-stake, which cuts energy use by over 99%, show a path forward. By prioritizing energy-efficient consensus mechanisms and integrating with green initiatives, cryptocurrencies can support climate goals. Governments and industries must collaborate to regulate high-energy mining and promote sustainable blockchain solutions, aligning digital finance with environmental objectives.