Guglielmo Vacca is a Lawyer and Co-Founder of Greensquare Società tra Avvocati, a leading law firm specialized in energy and environmental law. He advises investors, energy companies, developers, public entities and businesses on the structuring, development and implementation of renewable energy projects, providing strategic and operational legal support throughout the entire project lifecycle. His practice covers Renewable Energy Communities (RECs) and other collective self-consumption schemes, energy contracts—including Power Purchase Agreements (PPAs), Tolling Agreements, EPC and O&M contracts—administrative permitting procedures, public-private partnership procurement, and corporate transactions in the energy sector.