This case study highlights the importance of systematic technology assessment and roadmapping in reducing costs in the oil and gas industry, particularly in the subsea arena. The oil and gas industry has been facing strong fluctuations in crude oil prices, which have emphasized the need for cost reduction to improve operational resilience. The subsea production segment is characterized by higher initial investment and operating costs than onshore counterparts, and the trends are towards developments further from shore and away from existing production structures, which require greater investments. The study shows how new ways of engaging and working with technology suppliers to create technology roadmaps in the subsea arena helped to significantly reduce costs by phasing emerging technology deployment to allow technologies to mature and be deployed later along the roadmap. This approach can achieve sharp reductions in capital and operating costs, making it economically viable to deliver many new development projects anticipated over the next five to 10 years.