The companies will examine the feasibility of running the vessel’s generators as a single, connected power system rather than in isolated groups. Known as closed-bus operations, this approach could reduce the number of engines needed to run at a given time. Combined with energy storage systems, it could help optimize generator use, reduce emissions, and strengthen power-plant resilience during offshore drilling operations.

“Offshore drilling units have complex power demands, and the safe integration of energy storage requires a detailed understanding of the vessel, its operating profile and its power system. ABS is proud to support Constellation as it evaluates practical energy storage technologies for its fleet,” said Matt Tremblay, ABS Senior Vice President, Global Markets.

Separately at the conference, ABS presented Constellation with an approval in principle (AIP) for its design of a fuel processor for the Laguna Star drillship. The system is designed to emulsify water with fuel inline, ahead of the engine, with the goal of reducing fuel consumption and emissions.

“Constellation sees disruptive technologies as a key tool for accelerating the decarbonization of its operations. ABS’s recognition reinforces the technical robustness of these initiatives and their contribution to the commitments established in our ESG 2030 Plan,” said Leonardo Guimarães, Constellation Chief Technology Officer.

From electrification to new approaches for fuel and energy efficiency, offshore drilling contractors are looking for practical ways to reduce emissions without compromising uptime. ABS continues to work with offshore energy operators across this range of technologies, supporting projects from early feasibility studies through class approval.