Tidal energy converter system

The present invention generally relates to a support structure for Tidal Energy Converters (TECs), the support structure being for completely submerged deployment. A preferred support structure includes a single stanchion (4), extending in a first direction, and a cross arm (5), extending in a second direction perpendicular or substantially perpendicular to the first direction. The cross arm (5) is statically attached to the stanchion (4), and can support a plurality of TECs (3). A support structure also includes a support frame (7), which extends further in a third direction, perpendicular or substantially perpendicular to the first and second directions, than in the second direction. The support frame (7) is operable to anchor the support structure to a seabed.