ExclusiveBig-hitting quartet confirm tie-up on North Sea electrification studiesShell, BP, Harbour and TotalEnergies collaborating on central North Sea study as regulator says it is pleased with commitment shown ahead of concept selection deadlineIn the mix: Shell, which operates the Shearwater platform in the North Sea, is working with BP, Harbour and TotalEnergies on a scheme that could see facilities powered with low-carbon electricityPhoto: ROB WATTS/UPSTREAMRob WattsLondon