EnBW Invites Bids for Subsea Inspection Services at Offshore Wind Farms
EnBW has issued a tender inviting bids for periodic subsea inspection services at its offshore wind farms in the Baltic Sea and North Sea. The maximum value of the framework agreement is €6 million, with contracts expected to run from April 1, 2026, to March 31, 2031, and the option of up to three renewals each. The tender is divided into two lots.
Lot 1 covers the periodic subsea inspections for the 48.3 MW Baltic 1 and the 288 MW Baltic 2 offshore wind farms, including visual and functional inspections of the wind turbine and offshore substation foundations.
At the Baltic 1 site, all 21 wind turbines and the offshore substation will be inspected every four years, with the next scheduled campaign planned for 2027. At the Baltic 2 site, 20 wind turbines will be inspected annually (25% scope) with both jacket and monopile foundations covered. The Baltic 2 offshore substation is subject to a four-year inspection cycle.
The inspections may involve full visual and functional checks or reduced general visual inspections (GVI). The contractor will conduct the inspections between April and September and will be responsible for the full organization of the offshore campaign, including the selection and provision of a suitable DP2 vessel, logistics planning, crew transfers, and inspection equipment such as remotely operated vehicles (ROV).
In addition to the base scope, bidders must provide daily rates for optional services such as re-inspections, spot checks, or minor recovery works using ROVs.
Lot 2 covers the periodic subsea inspections for the 497 MW Hohe See, the 112 MW Albatros, and the 960 MW He Dreiht offshore wind farms in the North Sea, with similar inspection services as Lot 1. At the Hohe See and Albatros sites, 21 to 22 wind turbines will be inspected annually (25% scope), with the offshore substation of each wind farm subject to a four-year inspection cycle. At the He Dreiht offshore wind farm, 16 turbines will be inspected annually (25% scope).
The contractor, responsible for the full organization of the offshore campaign, will conduct inspections between April and September. EnBW had previously launched a call for tenders for crew transfer vessels (CTVs) operating at its offshore wind farms in the German part of the Baltic Sea.