Platforms like FlexiDAO and Power Ledger are changing how companies prove their energy is truly green. Using blockchain, each unit of electricity can be certified and matched with renewable generation in real time. This prevents double counting and ensures compliance with ESG targets. Microsoft partnered with Iberdrola in Spain to pioneer this approach, allowing customers to verify their power supply every 10 minutes. Singapore’s Energy Market Authority is testing similar pilots for solar certification. By embedding transparency into the system, blockchain eliminates doubt, enhances investor confidence, and sets a new standard for accountability in global energy markets.