Industrial & mechanical engineering

Guernsey's sole licensed, States-owned electricity supplier, dating to 1898 when the original concession was granted, incorporated in its current form in 1907; imports ~94% of power from France and provides contracting, plumbing, and heating services.

Alderney-based privately owned limited company established in 2004, specialising in tidal energy development and subsea interconnector projects like the FAB Link.

Guernsey mechanical and electrical contractor offering HVAC, plumbing, fire safety, security, and renewable energy services to commercial clients.

Mechanical and electrical engineering consultancy in St Peter Port, providing building services and energy assessments for Guernsey's construction sector.

Full-service boatyard and chandlery in Vale, offering mechanical, shipwright, rigging, antifouling, and boat storage services.

Civil engineering contractor and approved utility contractor, the Guernsey arm of Trant Engineering Ltd.

Vale-based M&E contracting company offering electrical, plumbing, heating, and air conditioning services.