Wedoany.com Report-Dec.22, Proteus Marine Renewables, a UK-based tidal energy company, announced on December 18, 2025, that it has successfully completed offshore maintenance and upgrade operations at the MeyGen tidal stream project in Scotland's Pentland Firth, in collaboration with project owner Ampeak Energy.

The works involved turbine recovery, redeployments, subsea cable activities, and enhancements to the turbines. Two turbines (TTG 2 and TTG 4) underwent servicing offshore and were promptly returned to service, while the third (TTG 1) was transported to Nigg for further maintenance ahead of future redeployment. The fourth turbine (TTG 3) required no intervention and has now operated continuously for seven years without maintenance needs.

Solstad's Normand Vision offshore construction vessel supported the operations.

Drew Blaxland, CEO of Proteus Marine Renewables, stated: "The operation that we have just completed is another world record. Five turbine interventions in three days, without leaving site, servicing two of those on deck and returning them into operation subsea. Our continued works like this at MeyGen validate the commercial viability of subsea founded turbines."

He added: "Our offshore services team works hand in hand with our turbine designers to ensure fit for purpose machines that can be handled safely and efficiently in high flow marine conditions. I am proud, not just of what has been achieved, but also of the professional manner in which it has been completed. Our low risk, repeatable and scalable methods help underpin tidal stream energy's bankable investment proposition."

MeyGen, recognized as the world's largest tidal stream development, secured an agreement for lease in October 2010 from The Crown Estate for up to 398 MW of capacity in a phased rollout. Phase 1 consists of a 6 MW array with four 1.5 MW turbines, which became fully operational following the deployment of the final turbine in December 2024 and entered its 25-year operational period in April 2018.

Phase 2 has been allocated 59 MW, with planned commissioning in 2027, 2028, and 2029.

These recent activities demonstrate advancing reliability and efficiency in tidal energy technology, supporting further expansion of the site.