Innovation Zero Living Demonstrator. From Three Homes to a National Delivery Model. The Net Zero Terrace Streets (NZTS) programme began with an ambitious question: How do we decarbonise millions of Britain's terraced homes—not as isolated retrofit projects, but as coordinated neighbourhood infrastructure? While the programme ultimately produced the NZTS Playbook, the eight-stage deployment methodology and the institutional model now delivered through Looped Energy Communiti