Protecting underwater energy cables in Long Island Sound
Fort Salonga, Long Island
Offshore application: articulated concrete block mattresses
Protecting the energy supply transmitted between Long Island and Connecticut while building-in environmental benefits.
Since the 1970s, plans to connect the Connecticut and Long Island power grids could not gain regulatory approval due to impacts on the sensitive seabed environment. In 2003, the Cross Sound Cable was installed, but for energy utilities Eversouce and PSEG, protecting the Long Island seabed remained a critical factor when choosing cable armoring technology.
How we built it
50 ECOncrete marine mattresses were installed along a portion of the 24-mile electrical transmission cable. The mattresses provide 6,250 square-feet of cable coverage and growth points for native marine life like oysters and tubeworms.