Combining Renewable Microgrids and Energy Storage: Decarbonizing Offshore Assets by Means of Offshore Floating Solar and Wind

Abstract

Abstract This paper presents a novel concept that enables offshore operators to power their facilities with renewable microgrids consisting of offshore wind units (floating or bottom fixed) or floating solar arrays or a combination of the two. The offshore wind turbine can have a generation capacity of either 11 or 14 megawatts (MW). The modular offshore floating solar farm concept is designed for high-wave, saltwater environments – with generating capacities ranging from 1 – 100 MW. A battery energy storage solution (BESS) is included as part of the microgrid, along with AC power distribution, transformers, switchboards, and a power management system (PMS). The renewables-based microgrid can be connected to any production (fixed or floating) or drilling installation via a subsea cable -- preferably up to 2 kilometers in length (or longer if required). The concept is highly scalable and can be deployed to match the load profile and power needs of the host facility. Stable power provided by the microgrid enables a reduction in localized electricity generation from existing onboard diesel or gas turbine generators. The improved energy mix with wind/solar and energy storage combined can reduce carbon emissions up to estimated 60-70% when compared to conventional generation with gas turbines.