The document analyzes banks' impact on the green economy, examining their actions for sustainable development, from internal process management to financing renewable energy and efficiency projects. Despite a decrease in incentives, the sector remains relevant for banks. Many institutions are forming teams to manage green projects and offer products for renewable energy and energy efficiency. Various financing instruments and issues in financing energy efficiency, such as the solidity of applicants and regulatory instability, are identified. Banks are also improving their energy management and waste management practices, highlighting an increasing interest in environmental impact.