The chapter presents how advanced building envelopes, passive design, and on-site renewable energy systems meet building energy demands across residential, commercial, institutional, and large-scale developments. Large-scale ZEBs, such as urban developments and campus projects, emphasize integrated energy planning, microgrids, and district-level sustainability strategies. In addition, the chapter summarizes lessons learned from successful implementations, addressing challenges in construction, operation, financing, regulatory frameworks, and occupant engagement.