Lusail towers will host the headquarters for the Qatar National Bank, Qatar Central Bank, and Qatar Investment Authority alongside several other global organizations. Environmental design was a key driver in the project’s design. Targeting 4 stars in the regional Global Sustainability Assessment System (GSAS), the design includes centralized thermal storage using innovative phase change materials, high-pressure hydronic systems, demand-controlled ventilation, and efficient LED lighting. The molded white UHPC panels give the buildings a high thermal mass, with minimal punched windows that reduce the amount of solar heat to the interior space.