Hydrocarbons will be still admittedly responsible for a significant part of the energy mix in the coming years, but the climate change urges for strong decline of greenhouse gases (GHG) emissions. Therefore, the impact of oil and gas (O&G) exploration and production themselves shall pursue minimal carbon footprint. O&G production is a complex and energy-intensive process, meaning that it is an intrinsically hard to abate sector. Usually, the most relevant process in terms of GHG emissions is stationary combustion system for power generation. Furthermore, many relevant reserves are located far offshore in deep waters, what brings an additional complexity layer to the aforementioned scenario. In this context, new emerging technologies will certainly have a crucial role to play in the journey to net zero operations. This presentation aims to describe case studies of new reservoirs to be produced by alternative configurations (in terms of topsides and subsea layout) using subsea processing and boosting systems, combined with alternative low carbon power supply options, capable of representing significant GHG emissions reduction for offshore assets. These options include the integration with onshore grid, offshore renewables, alternative biofuels, and local post combustion carbon capture. For the selected case studies, a preliminary cost estimate is presented including CAPEX, OPEX and ABEX. The results indicate some insights on the most cost-effective solutions for low carbon power depending on specific conditions of each scenario, like power demand, distance to shore and water depth.