The emergency switchgear on Thunder Horse provides the critical power needed to safely shut-in, evacuate, and start-up the facility.  This switchgear was due for its 10-year preventative maintenance.  This work is considered critical because emergency bus failure could hinder evacuation during an emergency as well as force a production shut-in for over 6 months due to hydrate formation in the subsea infrastructure.  The presentation will cover the strategy utilized to leverage a forced shut-in from an approaching hurricane to avoid a future production deferral.