Emission reduction and cost optimization in Pre-Salt offshore platforms through the integration of offshore wind energy

Abstract

Offshore oil and gas platforms, particularly in Brazil’s Pre-Salt region, rely predominantly on gas turbines and diesel generators for its power supply, leading to high greenhouse gas (GHG) emissions and low operational efficiency. This study assesses the economic and environmental feasibility of integrating offshore wind energy to electrify these platforms, with a focus on reducing GHG emissions. The methodology consisted of an extensive literature review, complemented by data analysis and calculation-based estimates, supported by case studies and economic modelings. The results indicated that offshore wind power is technically feasible through the use of floating foundations and hybrid systems, achieving maximum efficiency with energy storage units to address intermittency. From an economic perspective, the transition proves highly advantageous in the long term, achieving up to a 68% reduction in total costs over a 25-year period in hybrid scenarios, mainly due to the significant decrease in fossil fuel consumption. Environmentally, the complete replacement of diesel in a single Floating Production Storage and Offloading (FPSO) unit can eliminate approximately 16,020 tons of CO₂ emissions annually. It is concluded that offshore wind energy is not merely an alternative, but a key pillar for sustainability and future investment in Brazil’s Pre-Salt oil and gas industry.