https://communities.bentley.com/products/building/building_analysis___design/f/energy-simulation/230755/new-partl-2021-regulations---what-to-expectPartL 2021 and net-zero The new 2021 Part L Regulations will be a major step towards realising the goal of net-zero energy buildings, and achieving this will bring many new challenges and opportunities in nearly all aspects of the building life-cycleen-USTelligent Community 12