To boost efficiency, drive innovation, and ensure sustainability in a rapidly changing energy landscape, Contact Energy needed to overhaul its infrastructure. Central to its transformation was expanding the enterprise architecture (EA) function, aligning it with an ambitious technology roadmap to modernize operations across the retail, corporate, and generation divisions. This strategy mirrors Forrester’s approach to complex digital transformations, focusing on strategic planning, data consolidation, cloud migration, and cybersecurity. This case study explores how Contact’s forward-thinking strategies have optimized operations and significantly advanced the decarbonization of New Zealand (Aotearoa).