Bidders sought to connect French floating offshore wind farms

France’s transmission system operator RTE launched a tender in late December for three 750MW HVAC substations to connect three floating offshore wind farms planned off Southern Brittany and the French Mediterranean.

RTE is tendering for HVAC substations to connect three floating offshore wind farms to the onshore grid (pic credit: Christophe Lehenaff/Moment via Getty Images)

Upcoming government tenders will see 500MW of floating wind installed off Brittany, adding to 250MW of existing floating capacity in the region. Two projects, each up to 750MW, are slated for the Mediterranean Sea.

The substations to connect them, which must include a helideck under RTE’s specification, will be located 40–50 km offshore.

The deadline for pre-qualification is 26 January 2024. The tender will formally open on 15 March 2024 for those who pass the pre-qualification phase. RTE said it expects between three and six candidates to reach this stage.

Under the tender, RTE hopes to award a single winner with two contracts for all three projects.

One is an EPCIC contract including engineering, procurement, construction, transport and installation (T&I), commissioning, and remedy of any defect of the high-voltage alternating current (HVAC) offshore substations.

The second contract is for operation and maintenance (O&M) of the offshore substations for a period up to 20 years, to be confirmed every five years. 

RTE reserves the right to adjust the contractual approach of the T&I and O&M activities during the further tender process.

Price is not the only criterion by which final bids will be judged, RTE added.